228 results on '"An, Jingjing"'
Search Results
2. Facile Recycling of Waste Biomass for Preparation of Hierarchical Porous Carbon with High-Performance Electromagnetic Wave Absorption
- Author
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Yihui Zhou, Jingjing He, Jiafu Hong, Haihe Xie, and Xuexia Lin
- Subjects
biomass ,electromagnetic wave ,hierarchical porous ,synergistic loss mechanism ,Organic chemistry ,QD241-441 - Abstract
Hierarchical-porous-structured materials have been widely used in the field of electromagnetic wave (EMW) absorption, playing a critical role in minimizing EMW interference and pollution. High-quality EMW absorbers, characterized by a lower thickness, lighter weight, wider absorption band, and stronger absorption capacity, have been instrumental in reducing damage and preventing malfunctions in the automotive and aviation industries. The utilization of discarded nut shells through recycling can not only alleviate environmental problems but relieve resource constraints. Herein, a facile method for the preparation of hierarchical porous biomass carbon derived from abandoned Xanthoceras Sorbifolium Bunge Shell (XSS) biomass was developed for high-performance EMW absorption. The porous structures of XSS biochar were studied by using different levels of the K2CO3 activator and simple carbonization. The effect of K2CO3 on the EMW parameters, including the complex permittivity, complex permeability, polarization relaxation, and impedance matching, was analyzed. The best EMW absorption performance of the XSS biochar was observed at a mass ratio of activator-to-biomass of 2:1. A minimum reflection loss (RLmin) of −38.9 dB was achieved at 9.12 GHz, and a maximum effective absorption bandwidth (EABmax) of up to 3.28 GHz (14.72~18.0 GHz) could be obtained at a 1.8 mm thickness. These results demonstrated that hierarchical porous XSS carbon was prepared successfully. Simultaneously, the prepared XSS biochar was confirmed as a potential and powerfully attractive EMW-absorbing material. The proposal also provided a simple strategy for the development of a green, low-cost, and sustainable biochar as a lightweight high-performance absorbing material.
- Published
- 2024
- Full Text
- View/download PDF
3. The morphological and chemical properties of fine roots respond to nitrogen addition in a temperate Schrenk’s spruce (Picea schrenkiana) forest
- Author
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Zhu, Haiqiang, Zhao, Jingjing, and Gong, Lu
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Biomass ,Ecosystem ,Environment ,Forests ,Nitrogen ,Picea ,Plant Roots ,Soil - Abstract
Fine roots (
- Published
- 2021
4. Facile Recycling of Waste Biomass for Preparation of Hierarchical Porous Carbon with High-Performance Electromagnetic Wave Absorption.
- Author
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Zhou, Yihui, He, Jingjing, Hong, Jiafu, Xie, Haihe, and Lin, Xuexia
- Subjects
- *
ELECTROMAGNETIC wave absorption , *BIOCHAR , *WASTE recycling , *ELECTROMAGNETIC fields , *BIOMASS , *IMPEDANCE matching , *ELECTROMAGNETIC waves - Abstract
Hierarchical-porous-structured materials have been widely used in the field of electromagnetic wave (EMW) absorption, playing a critical role in minimizing EMW interference and pollution. High-quality EMW absorbers, characterized by a lower thickness, lighter weight, wider absorption band, and stronger absorption capacity, have been instrumental in reducing damage and preventing malfunctions in the automotive and aviation industries. The utilization of discarded nut shells through recycling can not only alleviate environmental problems but relieve resource constraints. Herein, a facile method for the preparation of hierarchical porous biomass carbon derived from abandoned Xanthoceras Sorbifolium Bunge Shell (XSS) biomass was developed for high-performance EMW absorption. The porous structures of XSS biochar were studied by using different levels of the K2CO3 activator and simple carbonization. The effect of K2CO3 on the EMW parameters, including the complex permittivity, complex permeability, polarization relaxation, and impedance matching, was analyzed. The best EMW absorption performance of the XSS biochar was observed at a mass ratio of activator-to-biomass of 2:1. A minimum reflection loss (RLmin) of −38.9 dB was achieved at 9.12 GHz, and a maximum effective absorption bandwidth (EABmax) of up to 3.28 GHz (14.72~18.0 GHz) could be obtained at a 1.8 mm thickness. These results demonstrated that hierarchical porous XSS carbon was prepared successfully. Simultaneously, the prepared XSS biochar was confirmed as a potential and powerfully attractive EMW-absorbing material. The proposal also provided a simple strategy for the development of a green, low-cost, and sustainable biochar as a lightweight high-performance absorbing material. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Estimation of Millet Aboveground Biomass Utilizing Multi-Source UAV Image Feature Fusion.
- Author
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Yang, Zhongyu, Yu, Zirui, Wang, Xiaoyun, Yan, Wugeng, Sun, Shijie, Feng, Meichen, Sun, Jingjing, Su, Pengyan, Sun, Xinkai, Wang, Zhigang, Yang, Chenbo, Wang, Chao, Zhao, Yu, Xiao, Lujie, Song, Xiaoyan, Zhang, Meijun, and Yang, Wude
- Subjects
IMAGE fusion ,CROP yields ,BIOMASS ,BIOMASS estimation ,MILLETS ,GEOSTATIONARY satellites ,TRAFFIC estimation - Abstract
Aboveground biomass (AGB) is a key parameter reflecting crop growth which plays a vital role in agricultural management and ecosystem assessment. Real-time and non-destructive biomass monitoring is essential for accurate field management and crop yield prediction. This study utilizes a multi-sensor-equipped unmanned aerial vehicle (UAV) to collect remote sensing data during critical growth stages of millet, including spectral, textural, thermal, and point cloud information. The use of RGB point cloud data facilitated plant height extraction, enabling subsequent analysis to discern correlations between spectral parameters, textural indices, canopy temperatures, plant height, and biomass. Multiple linear regression (MLR), support vector machine (SVM), and random forest (RF) models were constructed to evaluate the capability of different features and integrated multi-source features in estimating the AGB. Findings demonstrated a strong correlation between the plant height derived from point cloud data and the directly measured plant height, with the most accurate estimation of millet plant height achieving an R
2 of 0.873 and RMSE of 7.511 cm. Spectral parameters, canopy temperature, and plant height showed a high correlation with the AGB, and the correlation with the AGB was significantly improved after texture features were linearly transformed. Among single-factor features, the RF model based on textural indices showcased the highest accuracy in estimating the AGB (R2 = 0.698, RMSE = 0.323 kg m−2 , and RPD = 1.821). When integrating two features, the RF model incorporating textural indices and canopy temperature data demonstrated optimal performance (R2 = 0.801, RMSE = 0.253 kg m−2 , and RPD = 2.244). When the three features were fused, the RF model constructed by fusing spectral parameters, texture indices, and canopy temperature data was the best (R2 = 0.869, RMSE = 0.217 kg m−2 , and RPD = 2.766). The RF model based on spectral parameters, texture indices, canopy temperature, and plant height had the highest accuracy (R2 = 0.877, RMSE = 0.207 kg m−2 , and RPD = 2.847). In this study, the complementary and synergistic effects of multi-source remote sensing data were leveraged to enhance the accuracy and stability of the biomass estimation model. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
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6. Reconstruction of Litopenaeus vannamei Genome-Scale Metabolic Network Model and Nutritional Requirements Analysis of Different Shrimp Commercial Varieties
- Author
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Chenchen Gao, Jiarui Yang, Tong Hao, Jingjing Li, and Jinsheng Sun
- Subjects
genome-scale metabolic network ,feed ,biomass ,nutrient requirement ,Litopenaeus vannamei ,Genetics ,QH426-470 - Abstract
As an important tool for systematic analysis, genome-scale metabolic network (GSMN) model has been widely used in various organisms. However, there are few reports on the GSMNs of aquatic crustaceans. Litopenaeus vannamei is the largest and most productive shrimp species. Feed improvement is one of the important methods to improve the yield of L. vannamei and control water pollution caused by the inadequate absorption of feed. In this work, the first L. vannamei GSMN named iGH3005 was reconstructed and applied to the optimization of feed. iGH3005 was reconstructed based on the genomic data. The model includes 2,292 reactions and 3,005 genes. iGH3005 was used to analyze the nutritional requirements of five different L. vannamei commercial varieties and the genes influencing the metabolism of the nutrients. Based on the simulation, we found that tyrosine-protein kinase src64b like may catalyze different reactions in different commercial varieties. The preference of carbohydrate utilization is different in various commercial varieties, which may due to the different expressions of some genes. In addition, this investigation suggests that a rational and targeted modification in the macronutrient content of shrimp feed would lead to an increase in growth and feed conversion rate. The feed for different commercial varieties should be adjusted accordingly, and possible adjustment schemes were provided. The results of this work provided important information for physiological research and optimization of the components in feed of L. vannamei.
- Published
- 2021
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- View/download PDF
7. Metal vacancy-enriched layered double hydroxide for biomass molecule electrooxidation coupled with hydrogen production.
- Author
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Yingjie Song, Shan Jiang, Yeheng He, Yu Wu, Xin Wan, Wenfu Xie, Jingjing Wang, Zhenhua Li, Haohong Duan, and Mingfei Shao
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BIOMASS ,ELECTROCATALYSTS ,HYDROXIDES ,FARADAIC current ,ELECTROLYTIC cells - Abstract
The electrochemical oxidation of biomass molecules coupling with hydrogen production is a promising strategy to obtain both green energy and value-added chemicals; however, this strategy is limited by the competing oxygen evolution reactions and high energy consumption. Herein, we report a hierarchical CoNi layered double hydroxides (LDHs) electrocatalyst with abundant Ni vacancies for the efficient anodic oxidation of 5-hydroxymethylfurfural (HMF) and cathodic hydrogen evolution. The unique hierarchical nanosheet structure and Ni vacancies provide outstanding activity and selectivity toward several biomass molecules because of the finely regulated electronic structure and highly-exposed active sites. In particular, a high faradaic efficiency (FE) at a high current density (99% at 100 mA cm
-2 ) is achieved for HMF oxidation, and a two-electrode electrolyzer is assembled based on the Ni vacancies-enriched LDH, which realized a continuous synthesis of highly-pure 2,5-furandicarboxylic acid products with high yields (95%) and FE (90%). [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
8. Recent advances in enzymatic biofuel cells enabled by innovative materials and techniques.
- Author
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Wengang Huang, Bin Zulkifli, Muhammad Yazid, Chai, Milton, Rijia Lin, Jingjing Wang, Yuelei Chen, Vicki Chen, and Jingwei Hou
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CLEAN energy ,BIOMASS energy ,BIOELECTRONICS ,BIOMASS ,BIOSENSORS ,ARTIFICIAL implants - Abstract
The past few decades have seen increasingly rapid advances in the field of sustainable energy technologies. As a new bio- and eco-friendly energy source, enzymatic biofuel cells (EBFCs) have garnered significant research interest due to their capacity to power implantable bioelectronics, portable devices, and biosensors by utilizing biomass as fuel under mild circumstances. Nonetheless, numerous obstacles impeded the commercialization of EBFCs, including their relatively modest power output and poor long-termstability of enzymes. To depict the current progress of EBFC and address the challenges it faces, this review traces back the evolution of EBFC and focuses on contemporary advances such as newly emergedmulti or single enzyme systems, various porous framework-enzyme composites techniques, and innovative applications. Besides emphasizing current achievements in this field, fromour perspective part we also introduced novel electrode and cell design for highly effective EBFC fabrication.We believe this review will assist readers in comprehending the basic research and applications of EBFCs as well as potentially spark interdisciplinary collaboration for addressing the pressing issues in this field. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
9. Effect of Biomass-Based Catalyst in Walnut Shell/Polypropylene to BTX
- Author
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Yanan Guo, Jingjing Ma, Xin Pan, Qingjiao Zhu, and Qingjie Guo
- Subjects
Polypropylene ,chemistry.chemical_compound ,Chemical engineering ,Chemistry ,Shell (structure) ,Biomass ,Catalysis - Abstract
Four biomass-based catalyst carriers with different pore structures were prepared by using a carbonization-activation method, followed by employment in the copyrolysis of Walnut Shell/Polypropylene (WNS/PP) to produce Benzene, Toluene and Xylene (BTX). Ten cycles were performed in each copyrolysis test in a bench-scaled tube furnace to determine the suitable pore size of the catalyst and excellent cycling performance for BTX production. In addition, Zn, Ni, and Ce were loaded with the selected catalyst carriers to synthesize the most suitable biomass-based catalyst. Results showed that the pore size and active center of the catalyst were the key factors affecting the WNS/PP catalytic copyrolysis. Biomass-based carrier with a pore size in the range of 0.55-1.2 nm was the most suitable to produce BTX in the optimal 10 cycle performance; it realized a relative BTX content of 9-20 area%, and a BTX mass yield of 23-67 mg/(graw) in the liquid-phase products from the WNS/PP copyrolysis. A catalyst loaded with 10 wt% Zn possessed the best catalytic effect with a relative BTX content of 39.49 area%, and a BTX yield of 111.13 mg/(graw).
- Published
- 2021
10. Catalytic Synthesis of the Biofuel 5-Ethoxymethylfurfural (EMF) from Biomass Sugars
- Author
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Dayong Yu, Xiaofang Liu, Yixuan Liu, Jingjing Jiang, Jinyu Tan, and Hu Li
- Subjects
Ethanol ,Chemistry ,Biomass ,Lignocellulosic biomass ,General Chemistry ,Catalysis ,Solvent ,chemistry.chemical_compound ,Biofuel ,Ionic liquid ,Organic chemistry ,QD1-999 ,Tetrahydrofuran - Abstract
A new generation of bioplatform molecule 5-ethoxymethylfurfural (EMF) has excellent energy density and combustion performance, which makes it a potential fuel additive. This article reviews the factors that affect the production of EMF from different feedstocks, including platform compounds, monosaccharides, polysaccharides, and raw lignocellulosic biomass. Focus is placed on discussing the catalytic efficiency with pros and cons of different acid catalysts, including homogeneous catalysts (i.e., liquid acids and metal salts), heterogeneous catalysts (i.e., zeolites, heteropolyacid-based hybrids, and SO3H-based catalysts), ionic liquids, mixed acid catalysts, and deep eutectic solvents (DESs). Except for the commonly used ethanol solvent, this review also summarizes the influence of the cosolvent system (e.g., ethanol/dimethylsulfoxide (DMSO), ethanol/tetrahydrofuran (THF), and ethanol/γ-valerolactone (GVL)) on the EMF yield.
- Published
- 2021
11. Interface Modification of TiO2 Nanotubes by Biomass-Derived Carbon Quantum Dots for Enhanced Photocatalytic Reduction of CO2
- Author
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Jiayan Zhang, Feifei Tao, and Jingjing Xu
- Subjects
Reduction (complexity) ,Materials science ,Chemical engineering ,Carbon quantum dots ,Interface (Java) ,Materials Chemistry ,Electrochemistry ,Photocatalysis ,Energy Engineering and Power Technology ,Chemical Engineering (miscellaneous) ,Biomass ,Electrical and Electronic Engineering - Published
- 2021
12. Effects of torrefaction and water-washing on the mineral transformation behavior during co-combustion of straw and coal: A CCSEM analysis
- Author
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Rui Li, Chang Wen, Jingjing Ma, Kai Yan, Jianqun Wu, Tianyu Liu, and Zhenqi Jing
- Subjects
Chemistry ,business.industry ,020209 energy ,Biomass ,Mullite ,02 engineering and technology ,Straw ,Combustion ,Torrefaction ,Pulp and paper industry ,020401 chemical engineering ,Aluminosilicate ,0202 electrical engineering, electronic engineering, information engineering ,Coal ,Char ,0204 chemical engineering ,business - Abstract
Biomass can be torrefied to improve the fuel quality prior to its utilization. In addition, a large number of soluble alkali metals can be removed by water washing, to solve slagging and other ash-related problems. In this study, computer-controlled scanning electron microscopy (CCSEM) was used to analyze the mineral composition and elemental distribution of straw, torrefied straw char, and torrefied-water washed straw char. The mineral transformation behavior and the distribution of main elements, when these biomass species were individually co-combusted with coal, were also studied in detail. The comparison of the mineral composition of bulk ash obtained from torrefied straw combustion and straw combustion revealed that the quartz phase decreased and the aluminosilicates of K-, Na-, and Ca–Fe–K increased in the former compared to that in the latter. After the torrefied straw was washed with water, the quartz and Si-Rich phases increased. K aluminosilicate decreased and the quartz phase increased when the torrefied sample was co-combusted with coal at both mixing ratios of 1:1 and 1:4 compared to straw/coal co-combustion. When the torrefied-water washing sample and coal were co-combusted at a 1:1 ratio, the quartz phase decreased, and the Si-Rich and mullite phases increased. When the straw/torrefied char/torrefied-washed char was co-fired with coal at the 1:4 ratio, the amount of K aluminosilicate was less compared to that observed at the 1:1 ratio. It can be concluded that both torrefaction and torrefaction-washing can reduce the content of low-melting-point aluminosilicates in the mineral composition of the studied biomass after co-combustion, which can be beneficial to alleviate the ash slagging problem.
- Published
- 2021
13. Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode
- Author
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Weimin Zhao, Jingjing Wen, Yanming Zhao, Zhifeng Wang, Yaru Shi, and Yan Zhao
- Subjects
biomass ,porous ,carbon ,li-ion battery ,anode ,Chemistry ,QD1-999 - Abstract
As lithium-ion battery (LIB) anode materials, porous carbons with high specific surface area are highly required because they can well accommodate huge volume expansion/contraction during cycling. In this work, hierarchically porous carbon (HPC) with high specific surface area (~1714.83 m2 g−1) is synthesized from biomass reed flowers. The material presents good cycling stability as an LIB anode, delivering an excellent reversible capacity of 581.2 mAh g−1 after cycling for 100 cycles at a current density of 100 mA g−1, and still remains a reversible capacity of 298.5 mAh g−1 after cycling for 1000 cycles even at 1000 mA g−1. The good electrochemical performance can be ascribed to the high specific surface area of the HPC network, which provides rich and fast paths for electron and ion transfer and provides large contact area and mutual interactions between the electrolyte and active materials. The work proposes a new route for the preparation of low cost carbon-based anodes and may promote the development of other porous carbon materials derived from various biomass carbon sources.
- Published
- 2020
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14. Interaction and kinetic analysis of co-gasification of bituminous coal with walnut shell under CO2 atmosphere: Effect of inorganics and carbon structures
- Author
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Rui Diao, Jingjing Deng, Shanshan Li, and Xifeng Zhu
- Subjects
Bituminous coal ,Thermogravimetric analysis ,Materials science ,060102 archaeology ,Renewable Energy, Sustainability and the Environment ,business.industry ,020209 energy ,geology.rock_type ,technology, industry, and agriculture ,geology ,Biomass ,chemistry.chemical_element ,06 humanities and the arts ,02 engineering and technology ,complex mixtures ,Chemical engineering ,chemistry ,0202 electrical engineering, electronic engineering, information engineering ,0601 history and archaeology ,Coal ,Reactivity (chemistry) ,Char ,Inductively coupled plasma ,business ,Carbon - Abstract
In this study, co-gasification behaviors and synergistic interaction of bituminous coal and walnut shell under CO2 atmosphere were investigated by using a thermogravimetric analyzer. The evolution of physicochemical properties of samples was characterized with an inductively coupled plasma emission spectrometer, an X-ray fluorescence spectrometer, and an X-ray diffractometer. The results indicated that the addition of walnut shell significantly enhanced the gasification reactivity of coal, and coal/biomass blend ratio of 7:3 showed an intense gasification. Moreover, a significant co-gasification interaction was observed in the char gasification stage and demonstrated that a high coal/biomass blend ratio induced the formation of amorphous carbons and further accelerated the co-gasification reaction. Meanwhile, the active inorganics were severely released as 30 wt% bituminous coal added to walnut shell, causing a deteriorative gasification reactivity. Furthermore, three kinetic models illustrated that the coal/biomass blend ratio of 7:3 required a minimum activation energy to initialize gasification. The findings in this work would be beneficial for revealing the co-gasification mechanism of biomass and coal, and provide a useful basis on their multi-scale applications.
- Published
- 2021
15. Co-production of upgraded bio-oils and H2-rich gas from microalgae via chemical looping pyrolysis
- Author
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Jingjing Liu, Qingjie Guo, Xiude Hu, Tao Wang, Yongzhuo Liu, Lingyun Wang, and Xintao Zhang
- Subjects
Denitrification ,Renewable Energy, Sustainability and the Environment ,Chemistry ,Energy Engineering and Power Technology ,Biomass ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Oxygen ,0104 chemical sciences ,Fuel Technology ,Chemical engineering ,Heat of combustion ,0210 nano-technology ,Hydrodeoxygenation ,Pyrolysis ,Chemical looping combustion ,Syngas - Abstract
In order to produce high-quality bio-oils and syngas from biomass, a novel pyrolysis approach based on the chemical looping concept, namely chemical looping pyrolysis (CLPy), was proposed. In the current work, thermodynamic feasibility study and experimental investigations of the proposed CLPy with calcium-ferrite oxygen carriers and Nannochloropsis sp. microalgal biomass were conducted. The results suggested that the reduced calcium-ferrite oxygen carrier facilitated the denitrification, ketonization, and hydrodeoxygenation (HDO) of bio-oils during the pyrolysis stage. Since large amounts of oxygen in bio-oils were transferred to the reduced oxygen carrier, the heating value of bio-oils was remarkably increased up to 34.2 MJ/kg and 36.0 MJ/kg by employing the reduced CaFe2O4 and Ca2Fe2O5 oxygen carrier, respectively. In addition, a high H2 content of 50% in the pyrolysis gas was observed at the optimal pyrolysis temperature. In the gasification stage, the production of high-quality syngas was achieved. The content of H2 accounted for up to 70% of the gasification products when taking steam as gasifying agent, while that of CO was composed of 66% without the use of a gasifying agent. Moreover, the oxygen carrier was reduced to its reduction state, available for the next loop. In summary, CLPy proposed in this work involves the continuous transference of the oxygen from bio-oils to syngas by an oxygen carrier and provides a brand-new approach for the comprehensive utilization of biomass.
- Published
- 2021
16. Metabolic flexibility during a trophic transition reveals the phenotypic plasticity of greater duckweed (Spirodela polyrhiza 7498).
- Author
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Sun, Zuoliang, Zhao, Xuyao, Li, Gaojie, Yang, Jingjing, Chen, Yan, Xia, Manli, Hwang, Inhwan, and Hou, Hongwei
- Subjects
PHENOTYPIC plasticity ,PORTULACA oleracea ,LEMNA minor ,REACTIVE oxygen species ,BIOMASS ,CARBON dioxide - Abstract
Summary: The greater duckweed (Spirodela polyrhiza 7498) exhibits trophic diversity (photoautotrophic, heterotrophic, photoheterotrophic, and mixotrophic growth) depending on the availability of exogenous organic carbon sources and light.Here, we show that the ability to transition between various trophic growth conditions is an advantageous trait, providing great phenotypic plasticity and metabolic flexibility in S. polyrhiza 7498.By comparing S. polyrhiza 7498 growth characteristics, metabolic acclimation, and cellular ultrastructure across these trophic modes, we show that mixotrophy decreases photosynthetic performance and relieves the CO2 limitation of photosynthesis by enhancing the CO2 supply through the active respiration pathway. Proteomic and metabolomic analyses corroborated that S. polyrhiza 7498 increases its intracellular CO2 and decreases reactive oxygen species under mixotrophic and heterotrophic conditions, which substantially suppressed the wasteful photorespiration and oxidative‐damage pathways. As a consequence, mixotrophy resulted in a higher biomass yield than the sum of photoautotrophy and heterotrophy.Our work provides a basis for using trophic transitions in S. polyrhiza 7498 for the enhanced accumulation of value‐added products. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
17. Separation of biobutanol from ABE fermentation broth using lignin as adsorbent: A totally sustainable approach with effective utilization of lignocellulose
- Author
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Shan Liu, Osama M. Darwesh, Chunli Li, Jing Fang, Jingjing Du, Haoyang Wang, and Hao Li
- Subjects
Butanols ,Biomass ,02 engineering and technology ,Lignin ,Biochemistry ,Acetone ,03 medical and health sciences ,chemistry.chemical_compound ,1-Butanol ,Adsorption ,Structural Biology ,Desorption ,Spectroscopy, Fourier Transform Infrared ,Molecular Biology ,030304 developmental biology ,chemistry.chemical_classification ,0303 health sciences ,Ethanol ,Butanol ,General Medicine ,021001 nanoscience & nanotechnology ,Hydrocarbon ,Chemical engineering ,chemistry ,Fermentation ,0210 nano-technology - Abstract
Adsorption is considered to be a promising butanol recovery method for solving the issue of inhibition in the ABE (acetone-butanol-ethanol) fermentation. As a byproduct in the second generation biobutanol industry, lignin was found to be a good adsorbent for the butanol enrichment. It is conducive to the full utilization of renewable lignocellulose biomass resource. Kinetic and equilibrium experiments indicated that lignin had a satisfactory adsorption rate and capacity that are comparable to those of many synthetic materials. Multicomponent adsorption experiments revealed that lignin had higher adsorption selectivity toward butanol than that of ethanol and acetone. The adsorption capacity of lignin for butanol first increased and then gradually decreased with increasing temperature. And maximum adsorption capacity reached 304.66 mg g−1 at 313 K. The inflection point of temperature is close to the ABE fermentation temperature of 310 K. The condensed butanol by desorption was 145 g L−1, with a satisfying regeneration performance. 1H NMR and FT-IR spectra indicated that the aromatic units of lignin formed π-systems with A/B/E. The π-system is particularly significant for butanol due to its longer hydrocarbon chain. These results could contribute to the emerging lignin-based materials for butanol separation.
- Published
- 2021
18. Visible‐Light‐Responsive TiO 2 /NiFe Mixed Metal Oxide‐Carbon Photocatalytic Fuel Cell with Synchronous Hydrogen Peroxide Production
- Author
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Junzheng Zhang, Jun Lu, Wenqing Guo, Sheng Tao, Jingjing Shi, and Fengming Wang
- Subjects
Inorganic Chemistry ,chemistry.chemical_compound ,Chemical engineering ,Hydrotalcite ,Mixed metal ,Chemistry ,Photocatalysis ,Oxide ,Biomass ,chemistry.chemical_element ,Hydrogen peroxide ,Carbon ,Visible spectrum - Published
- 2021
19. The morphological and chemical properties of fine roots respond to nitrogen addition in a temperate Schrenk’s spruce (Picea schrenkiana) forest
- Author
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Haiqiang Zhu, Jingjing Zhao, and Lu Gong
- Subjects
0106 biological sciences ,Ecophysiology ,Nitrogen ,Science ,chemistry.chemical_element ,Biomass ,Root system ,Environment ,Forests ,Plant Roots ,01 natural sciences ,Article ,Soil ,Affordable and Clean Energy ,Ecosystem ,Picea ,Multidisciplinary ,Ecology ,biology ,Phosphorus ,04 agricultural and veterinary sciences ,Soil carbon ,biology.organism_classification ,chemistry ,Agronomy ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Medicine ,Forest ecology ,010606 plant biology & botany ,Picea schrenkiana - Abstract
Fine roots (−1 a−1), low (5 kg ha−1 a−1), moderate (10 kg ha−1 a−1), and high nitrogen (20 kg ha−1 a−1)) on the biomass, morphological characteristics, chemical elements and nonstructural carbohydrates of fine roots in a Picea schrenkiana forest. We found that most fine roots were located in the 0–20 cm of soil layer across all nitrogen treatment groups (42.81–52.09% of the total biomass). Compared with the control, the biomass, specific root length and specific root area of the fine roots increased in the medium nitrogen treatment, whereas the fine roots biomass was lower in the high nitrogen treatment than in the other treatments. In fine roots, nitrogen addition promotes the absorption of nitrogen and phosphorus and their stoichiometric ratio, while reducing the content of nonstructural carbohydrates. The content of nonstructural carbohydrates in the small-diameter roots (
- Published
- 2021
20. Adsorption of Organic Compounds by Biomass Chars: Direct Role of Aromatic Condensation (Ring Cluster Size) Revealed by Experimental and Theoretical Studies
- Author
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Jingjing Yang, Chen Yang, Wenhao Wu, Lijuan Zhang, Joseph J. Pignatello, Zhi Dang, Guining Lu, and Kun Yang
- Subjects
chemistry.chemical_classification ,Condensation ,Binding energy ,chemistry.chemical_element ,Sorption ,General Chemistry ,Carbon black ,Models, Theoretical ,010501 environmental sciences ,01 natural sciences ,Carbon ,Hydrocarbon ,Adsorption ,chemistry ,Chemical engineering ,Environmental Chemistry ,Biomass ,Organic Chemicals ,Porosity ,0105 earth and related environmental sciences - Abstract
Biomass chars are a major component of the soil environmental black carbon pool and prepared forms are a potentially useful tool in remediation. A function critical to the roles of both environmental and prepared chars is sorption of organic compounds. Char properties known to control sorption include surface area, porosity, functional group composition, and percent aromatic carbon. Here, we show that sorption affinity (but not maximum capacity) of organic compounds is directly related to the degree of condensation of the aromatic fraction. The Dubinin-Ashtakov characteristic sorption energy (EDA, kJ mol-1) of 22 compounds on a thermoseries of bamboo chars correlates strongly with the DP/MAS-13C NMR-determined bridgehead aromatic carbon fraction (χb), which relates to the mean ring cluster size. Density functional theory-computed binding energy (Ebd) for five of the compounds on a representative series of polybenzenoid hydrocarbon open-face sheets also correlates positively with χb, leveling off for rings larger than ∼C55. The Ebd, in turn, correlates strongly with EDA. An increase in Ebd with cluster size is also found for sorption, both monolayer and bilayer, between parallel sheets representing slit micropores. The increasing sorption energy with cluster size is shown to be due to increasing cluster polarizability, which strengthens dispersion forces with the sorbate. The findings underscore a previously overlooked explicit role of aromatic condensation in sorption energy, and illustrate the utility of EDA-Ebd comparison for predicting sorption.
- Published
- 2021
21. Hydrothermal Synthesis of Cellulose-Derived Carbon Nanospheres from Corn Straw as Anode Materials for Lithium ion Batteries
- Author
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Kaifeng Yu, Jingjing Wang, Kexian Song, Xiaofeng Wang, Ce Liang, and Yanli Dou
- Subjects
biomass ,corn straw cellulose ,hydrothermal carbonization ,carbon nanospheres ,lithium ion battery ,Chemistry ,QD1-999 - Abstract
As a most attractive renewable resource, biomass has the advantages of low pollution, wide distribution and abundant resources, promoting its applications in lithium ion batteries (LIBs). Herein, cellulose-derived carbon nanospheres (CCS) were successfully synthesized by hydrothermal carbonization (HTC) from corn straw for use as an anode in LIBs. The uniform distribution and cross-linked structure of carbon nanospheres were obtained by carefully controlling reaction time, which could not only decrease the transport pathway of lithium ions, but also reduce the structural damage caused by the intercalation of lithium ions. Especially, obtained after hydrothermal carbonization for 36 h, those typical characteristics make it deliver excellent cycling stability as well as the notable specific capacity of 577 mA h g−1 after 100 cycles at 0.2C. Hence, this efficient and environment-friendly method for the fabrication of CCS from corn straw could realize the secondary utilization of biomass waste, as well as serve as a new choice for LIBs anode materials.
- Published
- 2019
- Full Text
- View/download PDF
22. Effects of different treatments on root and shoot biomass of sunflower
- Author
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XIA Kangsheng, GUO Jingjing, SHEN Yajun, LI Bingyu, and WANG Hongbing
- Subjects
cultivation substrate composition ,Q1-390 ,Science (General) ,biomass ,root growth ,small-container seedling ,food and beverages ,sunflower (helianthus annuus) ,complex mixtures - Abstract
The experiment was designed in a completely random way using a single factor of cultivation substrate compositions (lapilli and clay soil). Sunflower(Helianthus annuus) lived in the substrates were analyzed on their height, stem diameter, biomass, root volume, root surface area, length, root tip number at the end of the growing season.The results showed that there were significant influences of substrate compositions on sunflower growth, which mainly embodied in the accumulation of dry biomass, root system development, and soil physical indicators.Finally, an optimal substrate composition was found and used for the annual container seedlings of sunflower to increase its quality and yield.
- Published
- 2020
23. Hydrothermal Carbonization of Microalgae-Fungal Pellets: Removal of Nutrients from the Aqueous Phase Fungi and Microalgae Cultivation
- Author
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Luyi Li, Wenguang Zhou, Renfeng Liu, Li Jingjing, Liwei Gao, Jie Chen, Lisha Ding, Liang Wei, Jun Li, Siyu Xu, Lijian Leng, and Songqi Leng
- Subjects
Renewable Energy, Sustainability and the Environment ,Chemistry ,General Chemical Engineering ,Aqueous two-phase system ,Pellets ,Biomass ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Solid fuel ,Pulp and paper industry ,01 natural sciences ,0104 chemical sciences ,Hydrothermal carbonization ,Nutrient ,Environmental Chemistry ,0210 nano-technology - Abstract
Hydrothermal carbonization (HTC) has a unique advantage over conventional processes to convert wet biomass into a solid fuel without the need to dewater and dry the biomass. A byproduct of the HTC ...
- Published
- 2020
24. Differences in eco-physiological responses to the removal of adventitious roots between Syzygium nervosum A. Cunn. ex DC. and Syzygium cumini (L.) Skeels saplings under waterlogging.
- Author
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Li, Dadong, Miao, Lingfeng, Tian, Mengjie, Zhou, Jingjing, Yang, Weizong, and Yang, Fan
- Subjects
SYZYGIUM ,ROOT growth ,PLANT growth ,PLANT species ,BIOMASS ,WOODY plants - Abstract
Key message: The production of adventitious roots partially counteracts the negative effects of waterlogging on the growth of Syzygium nervosum A. Cunn. ex DC. and Syzygium cumini (L.) Skeels. S. cumini was more responsive and suffered from larger negative effects than S. nervosum after the removal of adventitious roots. Context: Adventitious roots contain gas channels and functionally replace or compensate for the loss of primary roots that usually decay during waterlogging. However, the importance of adventitious roots on growth in waterlogged woody plants varies with species. Therefore, there has been some controversy about whether adventitious roots have beneficial effects on the growth of waterlogged plants. Aims: We assessed whether S. nervosum and S. cumini differentially responded to the ablation of adventitious roots during waterlogging and whether compensatory responses occurred in the primary roots in both species. Methods: S. nervosum and S. cumini saplings were subjected to waterlogging and adventitious root removal for 120 days, and morphological, physiological, biochemical parameters, and biomass were recorded. Results: All plants survived waterlogging, and produced adventitious roots at the shoot base. Waterlogging had negative effects on the growth of both species, but the effect was more severe in S. cumini than in S. nervosum as seen from the values of comprehensive evaluation and total biomass. However, S. nervosum compensated for the ablation of adventitious roots with increased primary root dry mass, primary root activity, total root length, root tip number, and peroxidase activity. Conclusions: S. nervosum with a high proportion of adventitious roots would be at an advantage during waterlogging. The removal of adventitious roots was detrimental to the growth of both species, but S. nervosum exhibited less damage than S. cumini due to its compensatory physiological responses and its primary roots. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
25. The biosorption of Cr(VI) ions by dried biomass obtained from a chromium-resistant bacterium
- Author
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Nguema, Paul Fabrice, Luo, Zejiao, and Lian, Jingjing
- Published
- 2014
- Full Text
- View/download PDF
26. Dual‐Templating Approaches to Soybeans Milk‐Derived Hierarchically Porous Heteroatom‐Doped Carbon Materials for Lithium‐Ion Batteries
- Author
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Hongxun Yang, Xingcai Wu, Fenfen Zheng, Aihua Yuan, Yang Han, Junhao Zhang, Huaibo Ye, Weiwei Xiong, Peng Yan, and Wang Jingjing
- Subjects
biomass carbon ,Battery (electricity) ,Materials science ,Heteroatom ,Li-ion batteries ,chemistry.chemical_element ,Biomass ,010402 general chemistry ,01 natural sciences ,Na-ion batteries ,Energy storage ,lcsh:Chemistry ,hierarchical porous design ,Porosity ,Full Paper ,energy storage ,010405 organic chemistry ,General Chemistry ,Full Papers ,0104 chemical sciences ,lcsh:QD1-999 ,chemistry ,Chemical engineering ,Lithium ,Pyrolysis ,Carbon - Abstract
Biomass derived carbon materials are widely available, cheap and abundant resources. The application of these materials as electrodes for rechargeable batteries shows great promise. To further explore their applications in energy storage fields, the structural design of these materials has been investigated. Hierarchical porous heteroatom‐doped carbon materials (HPHCs) with open three‐dimensional (3D) nanostructure have been considered as highly efficient energy storage materials. In this work, biomass soybean milk is chosen as the precursor to construct N, O co‐doped interconnected 3D porous carbon framework via two approaches by using soluble salts (NaCl/Na2CO3 and ZnCl2/Mg5(OH)2(CO3)4, respectively) as hard templates. The electrochemical results reveal that these structures were able to provide a stable cycling performance (710 mAh ⋅ g−1 at 0.1 A ⋅ g−1 after 300 cycles for HPHC‐a, and 610 mAh ⋅ g−1 at 0.1 A ⋅ g−1 after 200 cycles for HPHC‐b) in Li‐ion battery and Na‐ion storage (210 mAh ⋅ g−1 at 0.1 A ⋅ g−1 after 900 cycles for HPHC‐a) as anodes materials, respectively. Further comparative studies showed that these improvements in HPHC‐a performance were mainly due to the honeycomb‐like structure containing graphene‐like nanosheets and high nitrogen content in the porous structures. This work provides new approaches for the preparation of hierarchically structured heteroatom‐doped carbon materials by pyrolysis of other biomass precursors and promotes the applications of carbon materials in energy storage fields., Powerful soybean! This work provides novel strategies to design nanostructures by using low‐cost carbonaceous materials, thus facilitating their applications as energy storage materials. Hierarchically porous heteroatom‐doped carbon materials have been prepared using soybean milk precursors. The as‐derived hierarchically porous nitrogen/oxygen‐doped carbon materials show excellent electrochemical properties for LIBs and SIBs.
- Published
- 2020
27. Microwave absorption on a bare biomass derived holey silica-hybridized carbon absorbent
- Author
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Qiangchun Liu, Fei Huang, Xiangkai Kong, Qingsong Li, Sini Wang, and Jingjing Zhu
- Subjects
Materials science ,Reflection loss ,chemistry.chemical_element ,Biomass ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,chemistry ,Chemical engineering ,General Materials Science ,Dielectric loss ,0210 nano-technology ,Absorption (electromagnetic radiation) ,Pyrolysis ,Plasma processing ,Carbon ,Microwave - Abstract
Developing lightweight and inexpensive absorbents with strong and broadband absorbing performance toward microwave radiation is a challenging but pressing task. Here we report that rice husk-derived silica-hybridized holey carbon fabricated by combining pyrolysis and plasma processing methods is active for the microwave absorbing. The obtained metal-free product is barely prepared from wasted biomass without any additive reagents addition. The results demonstrate at the thickness of 1.5 mm, its reflection loss reaches −43.0 dB at 13.36 GHz and the corresponding absorption bandwidth approaches 3.68 GHz (from 11.44 GHz to 15.12 GHz), over-performing most bare biomass-derived absorbents. The enhanced performance is attributed to the silica blocks existing on surface, which is inherited from the raw rice husk precursor and will construct abundant hybridized contact sites with the derived carbon matrix, thereby providing plenty of interfacial polarizations. Meanwhile, the post plasma treatment can generate rich tiny holes on the carbon matrix, and endow it with high surface areas associated with a great variety of defective sites, and hence regulating the dielectric loss of the final product. It is anticipated that these can represent a feasible addition to the family of wasted biomass-derived sustainable microwave absorbents.
- Published
- 2020
28. Efficient Fractionation of Corn Stover for Biorefinery Using a Sustainable Pathway
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Hailong Yu, Yonghao Ni, Shiwei Liu, Shuangxi Nie, Yue Liu, Chaojun Wu, Jingjing Hou, Yu Shitao, Wu Qiong, and Yuqin Xu
- Subjects
Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,food and beverages ,Biomass ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Biorefinery ,Pulp and paper industry ,01 natural sciences ,0104 chemical sciences ,chemistry.chemical_compound ,Corn stover ,chemistry ,Biofuel ,Bioenergy ,Levulinic acid ,Environmental Chemistry ,Lignin ,Cellulose ,0210 nano-technology - Abstract
This study presents a sustainable pathway for fractionating corn stover to produce glucose, high-quality lignin nanoparticles (LNPs), and levulinic acid (LA) based on the use of p-toluenesulfonic a...
- Published
- 2020
29. Interactions between intercropped Avena sativa and Agropyron cristatum for nitrogen uptake
- Author
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Yuqiang Tian, Jingjing Song, Min Liu, Yanjie Liu, Minghua Song, Na Qiao, Haishan Niu, and Huimin Li
- Subjects
0106 biological sciences ,food.ingredient ,biology ,Monocropping ,Chemistry ,Soil Science ,Biomass ,Plant physiology ,chemistry.chemical_element ,Intercropping ,04 agricultural and veterinary sciences ,Plant Science ,biology.organism_classification ,01 natural sciences ,Nitrogen ,Agropyron cristatum ,Soil resources ,Avena ,food ,Agronomy ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,010606 plant biology & botany - Abstract
The effect of cropping regime on nitrogen (N) uptake in two coexisting plant grass species (Avena sativa and Agropyron cristatum) was investigated. The two grass species were cultivated by monocropping or intercropping. 15N-labeling was used to examine N uptake of NH4+ versus NO3− at 0–5 cm and 5–15 cm soil depths. The aboveground and total biomass of intercropped A. sativa was 1.3 times greater than monocropped A. sativa. The biomass of A. cristatum did not change between cropping systems. In the 0–5 cm soil layer, uptake of NO3− by A. sativa was 0.5 times less in the intercropped system than in the monocropped system, whereas uptake of NO3− by A. cristatum was 2.0 times more in the intercropped system. In the 5–15 cm depth, intercropping did not change N uptake by A. sativa but decreased NO3− uptake to 0.6 times by A. cristatum. Complementarity in N uptake between A. sativa and A. cristatum in the upper 0–5 cm soil layer is conducive to biomass accumulation. Intercropped A. sativa and A. cristatum does not compete strongly for soil resources and can alter their N uptake patterns to optimize biomass production.
- Published
- 2020
30. Estimating and Mapping Mangrove Biomass Dynamic Change Using WorldView-2 Images and Digital Surface Models
- Author
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Kai Liu, Yuanhui Zhu, Shugong Wang, Jingjing Cao, Zhifeng Wu, Lin Liu, and Soe W. Myint
- Subjects
Atmospheric Science ,010504 meteorology & atmospheric sciences ,WorldView-2 images ,Biomass change ,Geophysics. Cosmic physics ,0211 other engineering and technologies ,Biomass ,02 engineering and technology ,Carbon sequestration ,01 natural sciences ,Derris trifoliata ,Computers in Earth Sciences ,digital surface models (DSMs) ,TC1501-1800 ,021101 geological & geomatics engineering ,0105 earth and related environmental sciences ,biology ,QC801-809 ,Kandelia candel ,Reforestation ,Forestry ,Vegetation ,biology.organism_classification ,Ocean engineering ,Lidar ,Environmental science ,mangrove species ,Mangrove - Abstract
Mapping and quantification of biomass changes is critical to understanding mangrove carbon sequestration, conservation, and restoration. Few previous studies have focused on mangrove biomass changes based on high spatial resolution images, particularly for disturbed and recovering areas. This study developed an effective model to estimate and map mangrove aboveground biomass dynamic change between 2010 and 2016 on Qi'ao Island in South China. The study area includes native Kandelia candel ( K. candel ) and planted Sonneratia apetala ( S. apetala ) mangrove species within the largest planted area in China. Models were developed using WorldView-2 images, digital surface models (DSMs), and the random forest algorithm. Accuracies of the model were assessed using multiyear field samples. DSMs were identified as the most important variable for model accuracy, reducing relative error by up to 3.14%. Three models were developed: a model for 2010, another model for 2016, and a combined model for 2010 and 2016. Compared with the 2010 (RMSE = 41.03 t/ha, RMSEr = 24.31%) and 2016 (RMSE = 39.92 t/ha, RMSEr = 23.40%) models, the combined model (RMSE = 50.99 t/ha, RMSEr = 30.48%) only increased the relative error by 6.17% and 7.08%, respectively. Mangrove biomass maps generated from the most accurate models showed total biomass increased from 23270.43 to 39819.03 tons by up to 71.11% over the study period. K. candel total biomass decreased by 36.5% due to Derris trifoliata challenge. S. apetala total biomass increased by 74.79% due to reforestation programs, achieving aboveground biomass accumulation of 4.17 t/ha for stands that existed in 2010. This study provides insights into biomass dynamic change in disturbed and recovering mangrove areas. Future studies should consider using LiDAR techniques to obtain actual tree height applied for biomass estimation instead of DSM.
- Published
- 2020
31. OsGF14b is involved in regulating coarse root and fine root biomass partitioning in response to elevated [CO
- Author
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Jingjing, Wu, Yufang, Lu, Dongwei, Di, Yue, Cai, Chuanhui, Zhang, Herbert J, Kronzucker, Weiming, Shi, and Kejun, Gu
- Subjects
Nitrogen ,Oryza ,Biomass ,Carbon Dioxide ,Plant Roots ,Plant Proteins - Abstract
Elevated [CO
- Published
- 2021
32. A promising microalgal wastewater cyclic cultivation technology: Dynamic simulations, economic viability, and environmental suitability
- Author
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Jingjing Sun, Libin Yang, Shaoze Xiao, Huaqiang Chu, Shuhong Jiang, Zhenjiang Yu, Xuefei Zhou, and Yalei Zhang
- Subjects
Environmental Engineering ,Ecological Modeling ,Biofuels ,Microalgae ,Recycling ,Biomass ,Wastewater ,Pollution ,Waste Management and Disposal ,Water Science and Technology ,Civil and Structural Engineering - Abstract
The microalgal wastewater cyclic cultivation technology (AWC
- Published
- 2021
33. Effects of Phosphorus Supply on the Leaf Photosynthesis, and Biomass and Phosphorus Accumulation and Partitioning of Canola (Brassica napus L.) in Saline Environment
- Author
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Jing Li, Jingjing You, Jingdong Zheng, Chen Qian, Long Wang, Leng Suohu, Yang Guang, and Zuo Qingsong
- Subjects
Soil salinity ,food.ingredient ,Brassica ,Biomass ,chemistry.chemical_element ,Biology ,engineering.material ,Photosynthesis ,canola ,Nutrient ,food ,saline ,partitioning ,phosphorus ,Canola ,photosynthesis ,Phosphorus ,fungi ,food and beverages ,Agriculture ,biology.organism_classification ,Agronomy ,chemistry ,engineering ,Fertilizer ,accumulation ,Agronomy and Crop Science - Abstract
Salt stress is a major negative factor affecting the sustainable development of agriculture. Phosphorus (P) deficiency often occurs in saline soil, and their interaction inhibits plant growth and seed yield for canola (Brassica napus L.). P supply is considered an effective way to alleviate the damage of salt stress. However, the knowledge of how P supply can promote plant growth in saline environment was limited. A field experiment was conducted to explore the effects of P rate on accumulation, and partitioning, of biomass and P, leaf photosynthesis traits, and yield performance in saline soil in the coastal area of Yancheng City, Jiangsu Province, China, during the 2018–2019 and 2019–2020 growing seasons. P supply increased biomass and P accumulation in all organs, and root had the most increments among different organs. At flowering stage, P supply increased the biomass and P partitioning in root and leaf, but it decreased the partitioning in stem. At maturity stage, P supply facilitated the biomass and P partitioning in seed, but it decreased the partitioning in stem and shell, and it increased the reproductive-vegetative ratio, suggesting that P supply can improve the nutrients transporting from vegetative organs to reproductive organs. Besides, P supply improved the leaf area index and photosynthetic rate at the flowering stage. As a result, the seed yield and oil yield were increased. In conclusion, P supply can improve the canola plant growth and seed yield in a saline environment. P fertilizer at the rate of 120 kg P2O5 ha−1 was recommended in this saline soil.
- Published
- 2021
34. Sodium selenite enhances the production of functional proteins and biomass in Chlorella pyrenoidosa 038F by promoting acetate assimilation under heterotrophic cultivation.
- Author
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Shangguan, Jingjing, Yang, Na, Zhang, Litao, Liu, Jianguo, Li, Yueming, Xu, Jianchun, Xia, Xiuluan, and Xu, Bingzheng
- Subjects
- *
CHLORELLA pyrenoidosa , *SODIUM selenite , *KREBS cycle , *PENTOSE phosphate pathway , *RESPIRATION , *BIOMASS , *CHLORELLA vulgaris , *BRACHYPODIUM - Abstract
Unicellular microalga Chlorella pyrenoidosa is an excellent source of protein, but its ability to produce functional proteins has received less attention. In this study, a strategy to enhance the levels of functional proteins and biomass, by adding sodium selenite under heterotrophic cultivation, is reported for C. pyrenoidosa 038F. Activities of catalase, superoxide dismutase, and glutathione peroxidase were significantly enhanced by 1.94-, 1.90- and 32.73-fold, respectively, in C. pyrenoidosa 038F exposed to 20 mg/L of sodium selenite. Further, western blot analysis confirmed that sodium selenite promoted the synthesis of glutathione peroxidase, which might be due to the up-regulation of peroxisome and selenocysteine-synthesis-related genes. Sodium selenite also increased biomass, the content of protein and soluble sugar by 1.32-, 1.29-, 1.46-fold, respectively. Subsequent transcriptomic analysis confirmed that cellular respiration and the gluconeogenesis pathway were enhanced. This study highlights the potential use of heterotrophic C. pyrenoidosa 038F as a novel selenoprotein-rich carrier while simultaneously producing soluble sugar and biomass. These results might be helpful for increasing economic production of C. pyrenoidosa under heterotrophic cultivation. • The activity and content of glutathione peroxidase in C. pyrenoidosa were enhanced by sodium selenite. • The biomass, protein content and soluble sugar content in C. pyrenoidosa were increased by sodium selenite. • Sodium selenite promoted cellular respiration through increasing tricarboxylic acid cycle and pentose phosphate pathway. • This strategy could facilitate the production of high value-added Chlorella products. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
35. Reconstruction of Litopenaeus vannamei Genome-Scale Metabolic Network Model and Nutritional Requirements Analysis of Different Shrimp Commercial Varieties
- Author
-
Jinsheng Sun, Jingjing Li, Jiarui Yang, Chenchen Gao, and Tong Hao
- Subjects
nutrient requirement ,biomass ,business.industry ,feed ,Genome scale ,Litopenaeus ,Biomass ,Metabolic network ,QH426-470 ,Biology ,biology.organism_classification ,Feed conversion ratio ,Shrimp ,Biotechnology ,Nutrient ,Metabolic network model ,Genetics ,Molecular Medicine ,business ,genome-scale metabolic network ,Litopenaeus vannamei ,Genetics (clinical) - Abstract
As an important tool for systematic analysis, genome-scale metabolic network (GSMN) model has been widely used in various organisms. However, there are few reports on the GSMNs of aquatic crustaceans. Litopenaeus vannamei is the largest and most productive shrimp species. Feed improvement is one of the important methods to improve the yield of L. vannamei and control water pollution caused by the inadequate absorption of feed. In this work, the first L. vannamei GSMN named iGH3005 was reconstructed and applied to the optimization of feed. iGH3005 was reconstructed based on the genomic data. The model includes 2,292 reactions and 3,005 genes. iGH3005 was used to analyze the nutritional requirements of five different L. vannamei commercial varieties and the genes influencing the metabolism of the nutrients. Based on the simulation, we found that tyrosine-protein kinase src64b like may catalyze different reactions in different commercial varieties. The preference of carbohydrate utilization is different in various commercial varieties, which may due to the different expressions of some genes. In addition, this investigation suggests that a rational and targeted modification in the macronutrient content of shrimp feed would lead to an increase in growth and feed conversion rate. The feed for different commercial varieties should be adjusted accordingly, and possible adjustment schemes were provided. The results of this work provided important information for physiological research and optimization of the components in feed of L. vannamei.
- Published
- 2021
36. Multiple reflection and scattering effects of the lotus seedpod-based activated carbon decorated with Co
- Author
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Yanting, Qin, Cui, Ni, XiuBo, Xie, Jingjing, Zhang, Baolei, Wang, Haitao, Wu, Xueqin, Sun, Hideo, Kimura, Ronghai, Yu, and Wei, Du
- Subjects
Charcoal ,Seeds ,Lotus ,Biomass ,Microwaves - Abstract
The lotus seedpod-based activated carbon (LSAC) is derived from pyrolysis of lotus seedpod as biomass carbon precursor, and Co
- Published
- 2021
37. Biological upgrading of 3,6-anhydro-L-galactose from agarose to a new platform chemical
- Author
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Jingjing Liu, Yong Su Jin, Sora Yu, Kyoung Heon Kim, Dong Hyun Kim, Eun Ju Yun, Jeffrey G. Pelton, and Jae-Won Lee
- Subjects
chemistry.chemical_classification ,0303 health sciences ,010405 organic chemistry ,Microorganism ,Biomass ,Pulp and paper industry ,01 natural sciences ,Pollution ,Article ,0104 chemical sciences ,03 medical and health sciences ,chemistry.chemical_compound ,Hydrolysis ,chemistry ,Biofuel ,Bioenergy ,Environmental Chemistry ,Agarose ,Sugar alcohol ,Sugar ,030304 developmental biology - Abstract
Recently, the utilization of renewable biomass instead of fossil fuels for producing fuels and chemicals is receiving much attention due to the global climate change. Among renewable biomass, marine algae are gaining importance as third generation biomass feedstocks owing to their advantages over lignocellulose. Particularly, red macroalgae have higher carbohydrate contents and simpler carbohydrate compositions than other marine algae. In red macroalgal carbphydrates, 3,6-anhydro-L-galactose (AHG) is the main sugar composing agarose along with D-galactose. However, AHG is not a common sugar and is chemically unstable. Thus, not only AHG but also red macroalgal biomass itself cannot be efficiently converted or utilized. Here, we biologically upgraded AHG to a new platform chemical, its sugar alcohol form, 3,6-anhydro-l-galactitol (AHGol), an anhydrohexitol. To accomplish this, we devised an integrated process encompassing a chemical hydrolysis process for producing agarobiose (AB) from agarose and a biological process for converting AB to AHGol using metabolically engineered Saccharomyces cerevisiae to efficiently produce AHGol from agarose with high titers and yields. AHGol was also converted to an intermediate chemical for plastics, isosorbide. To our knowledge, this is the first demonstration of upgrading a red macroalgal biomass component to a platform chemical via a new biological route, by using an engineered microorganism.
- Published
- 2021
38. Differential response of soil respiration to nitrogen and phosphorus addition in a highly phosphorus-limited subtropical forest, China
- Author
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Yijing Shang, Heming Liu, Jingjing Song, Guiyao Zhou, Miao He, Xihua Wang, Shahla Hosseini Bai, and Zemei Zheng
- Subjects
0106 biological sciences ,Field experiment ,Phosphorus ,Biomass ,chemistry.chemical_element ,Forestry ,Management, Monitoring, Policy and Law ,010603 evolutionary biology ,01 natural sciences ,Nitrogen ,Soil respiration ,Animal science ,chemistry ,Autotroph ,Tropical and subtropical moist broadleaf forests ,Incubation ,010606 plant biology & botany ,Nature and Landscape Conservation - Abstract
Understanding feedback between terrestrial carbon (C) cycle and climate change is linked to the effects of nitrogen (N) and phosphorus (P) on soil respiration (Rs). However, the individual and interactive effects of N and P additions on soil respiration and its components (autotrophic [Ra] and heterotrophic respiration [Rh]) are not fully understood, especially in highly P limited subtropical forests. In this study, both field experiment and laboratory incubation (at 15 °C and 25 °C temperatures) were undertaken to examine the effects of N, P and N + P additions on Rs and Rh. Our results showed that N addition significantly increased Rs by 21.09%, but P and N + P additions exhibited no effects on Rs under field conditions. Under laboratory condition, N addition significantly suppressed Rh whereas P and N + P additions increased Rh compared with control. Meanwhile, N and P additions exhibited an antagonistic interaction on Rs, but N and P additions synergistically affected Rh under laboratory incubations at both incubation temperatures of 15 °C and 25 °C. Cumulative Rh was negatively correlated with fine root biomass, but was positively correlated with microbial biomass carbon regardless of incubation temperatures. Our findings indicated that both individual and interactive effects of N and P additions on Rs and Rh were required to be considered to improve prediction of N and P effects on forest C dynamics in the highly P limited subtropical forests.
- Published
- 2019
39. Biomass Waste-Derived 3D Metal-Free Porous Carbon as a Bifunctional Electrocatalyst for Rechargeable Zinc–Air Batteries
- Author
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Hong Chen, Qiang Li, Yongpeng Lei, Yi Zhang, Ya-Qian Zhang, Ting He, Jingjing Liu, Cheng Peng, Zhifang Sun, Yujie Qi, Huiqiong Wu, and Lunzhao Yi
- Subjects
Renewable Energy, Sustainability and the Environment ,Chemistry ,General Chemical Engineering ,Oxygen evolution ,Biomass ,chemistry.chemical_element ,02 engineering and technology ,General Chemistry ,Zinc ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrocatalyst ,01 natural sciences ,0104 chemical sciences ,Catalysis ,chemistry.chemical_compound ,Porous carbon ,Zinc–air battery ,Chemical engineering ,Environmental Chemistry ,0210 nano-technology ,Bifunctional - Abstract
The sluggish nature of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) coupled with the high cost of related noble-metal catalysts stimulate the research of active non-noble met...
- Published
- 2019
40. Insight into chronic exposure effects of nanosized titanium dioxide on Typha angustifolia leaf litter decomposition
- Author
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Mingxiang Qv, Yuting Yin, Bingbing Ma, Cao Xinshuai, Yuyan Zhang, Baozhong Zhang, Siddiq Akbar, Hang Ma, and Jingjing Du
- Subjects
Environmental Engineering ,Health, Toxicology and Mutagenesis ,0208 environmental biotechnology ,Biomass ,Fresh Water ,02 engineering and technology ,010501 environmental sciences ,Typhaceae ,01 natural sciences ,Freshwater ecosystem ,Decomposer ,Environmental Chemistry ,Ecosystem ,0105 earth and related environmental sciences ,Titanium ,biology ,Chemistry ,Fungi ,Public Health, Environmental and Occupational Health ,General Medicine ,General Chemistry ,Plant litter ,biology.organism_classification ,Pollution ,020801 environmental engineering ,Plant Leaves ,Environmental chemistry ,Nanoparticles ,Ecotoxicity ,Microcosm ,Typha angustifolia - Abstract
Advancement in nanotechnology has increased production of nanoparticles which initiates concerns for freshwater ecosystems. Nanosized TiO2 is one of the most used materials and its ecotoxicity has been extensively studied. Here, a freshwater microcosm experiment was performed to investigate the effects of nanosized (10, 60, and 100 nm) and bulk TiO2 at 1 g L−1 on the alteration in community structure of fungal decomposers and the consequences on litter decomposition of Typha angustifolia leaves. After 209 days of exposure, the decomposition rate was significantly higher in 100 nm TiO2 treatment compared to the control, which was caused by its promotion on fungal biomass and metabolic activity. Therefore, the study provides the multifaceted evidences for different effects of TiO2 with varied sizes on T. angustifolia leaf decomposition and highlights the importance of understanding the potential effects of varying sizes and long-term exposure in nanoparticle risk assessments.
- Published
- 2019
41. Viscosity reduction process of heavy oil by catalytic co-pyrolysis with sawdust
- Author
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Xiaopeng Zheng, Li Jingjing, Chang-Lian Deng, Chen Xiaodong, Ming Zhang, Chunsheng Wang, Tang Xiaodong, and Tian-Da Zhou
- Subjects
Chemistry ,Vapor pressure osmometry ,Scanning electron microscope ,020209 energy ,Biomass ,02 engineering and technology ,Analytical Chemistry ,Catalysis ,Viscosity ,Fuel Technology ,020401 chemical engineering ,Chemical engineering ,Elemental analysis ,visual_art ,0202 electrical engineering, electronic engineering, information engineering ,visual_art.visual_art_medium ,Sawdust ,0204 chemical engineering ,Pyrolysis - Abstract
In order to research the viscosity reduction process of heavy oil by catalytic co-pyrolysis with biomass, the catalytic co-pyrolysis experiments of Liaohe heavy oil and sawdust with calcium naphthenate as catalyst were implemented in this paper. The experimental results showed that the viscosity reduction ratio was up to 98% under the optimum reaction conditions with reaction temperature of 350℃, reaction time of 30 min, sawdust content of 5 wt% and catalyst content of 0.05 wt%. To investigate changes in composition and structure of heavy oil before and after reaction, the oil samples were characterized by elemental analysis (EL), vapor pressure osmometry (VPO), gas chromatography-mass spectrometry (GC–MS), 1H nuclear magnetic resonance (1H NMR) and scanning electron microscope (SEM). In addition, the catalytic pyrolysis mechanism was researched to explain the catalytic effect of calcium naphthenate on the co-pyrolysis reaction. Besides, the significant synergetic eff ;ect on viscosity reduction of heavy oil in catalytic co-pyrolysis system was demonstrated further. Finally, liquid products of sawdust pyrolysis were found to be beneficial to viscosity reduction of heavy oil. This work had a certain reference value for utilizing renewable biomass energy in viscosity reduction process of heavy oil.
- Published
- 2019
42. Effect of cadmium contamination on the eutrophic secondary pollution of aquatic macrophytes by litter decomposition
- Author
-
Jingjing Li, Zhe Liu, Liping Lv, Miao Zhang, Shuqing An, and Dehua Zhao
- Subjects
Pollution ,Environmental Engineering ,Nitrogen ,media_common.quotation_subject ,0208 environmental biotechnology ,chemistry.chemical_element ,02 engineering and technology ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,01 natural sciences ,Aquatic plant ,Biomass ,Waste Management and Disposal ,0105 earth and related environmental sciences ,media_common ,Cadmium ,Phosphorus ,Water Pollution ,General Medicine ,Contamination ,020801 environmental engineering ,Macrophyte ,Plant Leaves ,chemistry ,Environmental chemistry ,Litter ,Eutrophication - Abstract
The objective of this study was to identify the effect of cadmium (Cd) contamination on the decomposition of aquatic macrophyte litter and its eutrophic secondary pollution. A laboratory experiment was conducted with three treatments: water Cd contamination (Cd-w), litter Cd contamination (Cd-l) and control (CK). The results showed that CK and Cd-w exhibited the typical decomposition dynamics of litter, i.e., early rapid decomposition followed by slow decomposition, while the litter biomass loss (BL) in Cd-l exhibited an approximately linear relationship with time over the 64-day experimental period. The BL in Cd-l was only 10.8% in the initial 4 days, while that in CK and Cd-w was 59.0% and 54.8%, respectively. Cd inhibited the fluctuation of the water chemical oxygen demand (COD) by reducing both the early increase and the subsequent decrease. The increases in water total nitrogen (TN) and total phosphorus (TP) were inhibited by Cd contamination throughout most of the decomposition period. The alterations of litter quality during the plant growth period and of the bacterial community during the litter decomposition period by Cd contamination could explain the variations in litter decomposition rate and its eutrophic secondary pollution during the early and late decomposition stages, respectively. The Cd inhibition of the eutrophic secondary pollution of aquatic macrophytes has great significance for the improved evaluation of Cd contamination.
- Published
- 2019
43. Biomass gasification using the waste heat from high temperature slags in a mixture of CO2 and H2O
- Author
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Yongqi Sun, Jingjing Chen, and Zuotai Zhang
- Subjects
Blast furnace ,020209 energy ,Biomass ,02 engineering and technology ,Industrial and Manufacturing Engineering ,020401 chemical engineering ,Waste heat ,0202 electrical engineering, electronic engineering, information engineering ,Char ,0204 chemical engineering ,Electrical and Electronic Engineering ,Civil and Structural Engineering ,Waste management ,business.industry ,Mechanical Engineering ,Slag ,Building and Construction ,Pollution ,General Energy ,visual_art ,visual_art.visual_art_medium ,Environmental science ,Biomass gasification ,business ,Thermal energy ,Syngas - Abstract
The mechanisms of a novel method, biomass gasification under a mixed agent of CO2 and H2O using the thermal heat in high temperature (1450–1650 °C) slags, were identified in this study for the purpose of biomass treatment in the agriculture and slag disposal in the steel industry. The characteristics of gasification equilibriums, with varying factors including temperature, pressure, reacted CO2 and H2O amounts, were clarified especially the roles of hot slags. Both the target syngas including CO, H2 and CH4 and the polluting gases comprising of NH3, NO and NO2 were considered here. The results indicated that compared to the limited influence of blast furnace slags, the introduction of steel slags remarkably increased both the syngas yields and the char formed. Furthermore, it was found that there existed a transition temperature range for the H2 production and NH3 release, providing significant ideas for syngas optimization. The present study could thus not only offer important clues for the scientific understandings of biomass gasification using the thermal heat in hot slags but also show important guidance toward utilization of this emerging method.
- Published
- 2019
44. Characterization of additional zinc ions on the growth, biochemical composition and photosynthetic performance from Spirulina platensis
- Author
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Yuhuan Liu, Jingjing Wang, Wu Xiaodan, Shuyu Xiang, Ting Zhou, Roger Ruan, Hongli Zheng, Liu Mingzhi, Yunpu Wang, and Leipeng Cao
- Subjects
0106 biological sciences ,Environmental Engineering ,chemistry.chemical_element ,Biomass ,Bioengineering ,macromolecular substances ,Zinc ,010501 environmental sciences ,Photosynthesis ,01 natural sciences ,010608 biotechnology ,Phycocyanin ,Microalgae ,Spirulina ,Food science ,Waste Management and Disposal ,Carotenoid ,0105 earth and related environmental sciences ,Ions ,chemistry.chemical_classification ,Spirulina (genus) ,biology ,Renewable Energy, Sustainability and the Environment ,food and beverages ,General Medicine ,biology.organism_classification ,chemistry ,Wastewater ,Polyunsaturated fatty acid - Abstract
In this study, the effect of various initial Zn2+ concentration additionally on microalgae growth and biochemical composition were investigated. The Spirulina platensis biomass of each concentration reached the maximum at the end of the cultivation. However, high levels could severely inhibit the growth of microalgae. Fluorescence activity occurred changes in response to heavy metal stress. Moreover, biochemical composition in Spirulina platensis altered under zinc stress, and the highest contents of phycocyanin (PC), Chlorophyll-a (Chl-a), Carotenoid and zinc accumulation were obtained. The proportion of saturated and polyunsaturated fatty acids increased constantly in response to Zn2+ exposure. Overall, this study indicated that the use of Spirulina platensis is a viable method for treating zinc containing wastewater and harvested microalgae can be processed into high-zinc products.
- Published
- 2018
45. The Effects of Drought and Re-Watering on Non-Structural Carbohydrates of
- Author
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Xinyi, Guo, Changhui, Peng, Tong, Li, Jingjing, Huang, Hanxiong, Song, Qiuan, Zhu, and Meng, Wang
- Subjects
photosynthesis ,hydraulic failure ,soluble sugars ,biomass ,allocation ,fungi ,food and beverages ,Chinese pine ,starch storage ,sucrose ,glucose ,Article ,fructose - Abstract
Simple Summary Drought is one of the main drivers resulting in carbon imbalance in terrestrial ecosystems and the mortality of plants. How plants can survive under drought stress is becoming a major focus of interest. Non-structural carbohydrates include sugars and starch that are essential to plant metabolism and their roles in drought stress are thought to be critically important. Our study examined the allocation strategies of non-structural carbohydrates for three-year-old Pinus tabulaeformis (Chinese pine) seedlings under drought and subsequent re-watering conditions. Our results indicated that P. tabulaeformis seedlings showed strong drought resistance by investing limited non-structural carbohydrates to roots and depleting the starch storage in each organ (leaf, twig, stem, and root) to fuel the needs of plant metabolism and osmotic adjustment. Starch storage was first reconstructed after the drought stress was released. Our findings not only prove the important role of non-structural carbohydrates, especially starch storage, in the survival of P. tabulaeformis seedlings under drought condition, but also complement the limited studies on allocation strategies of non-structural carbohydrate after the drought stress is released, and broaden our understanding of the physiological mechanisms of plants in response to drought stress. Abstract Intense and frequent drought events strongly affect plant survival. Non-structural carbohydrates (NSCs) are important “buffers” to maintain plant functions under drought conditions. We conducted a drought manipulation experiment using three-year-old Pinus tabulaeformis Carr. seedlings. The seedlings were first treated under different drought intensities (i.e., no irrigation, severe, and moderate) for 50 days, and then they were re-watered for 25 days to explore the dynamics of NSCs in the leaves, twigs, stems, and roots. The results showed that the no irrigation and severe drought treatments significantly reduced photosynthetic rate by 93.9% and 32.6% for 30 days, respectively, leading to the depletion of the starch storage for hydraulic repair, osmotic adjustment, and plant metabolism. The seedlings under moderate drought condition also exhibited starch storage consumption in leaves and twigs. After re-watering, the reduced photosynthetic rate recovered to the control level within five days in the severe drought group but showed no sign of recovery in the no irrigation group. The seedlings under the severe and moderate drought conditions tended to invest newly fixed C to starch storage and hydraulic repair instead of growth due to the “drought legacy effect”. Our findings suggest the depletion and recovery of starch storage are important strategies for P. tabulaeformis seedlings, and they may play key roles in plant resistance and resilience under environmental stress.
- Published
- 2021
46. The Effects of Drought and Re-Watering on Non-Structural Carbohydrates of Pinus tabulaeformis Seedlings
- Author
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Changhui Peng, Jingjing Huang, Qiuan Zhu, Meng Wang, Hanxiong Song, Tong Li, and Xinyi Guo
- Subjects
0106 biological sciences ,0301 basic medicine ,Irrigation ,Sucrose ,Starch ,Biology ,Photosynthesis ,01 natural sciences ,General Biochemistry, Genetics and Molecular Biology ,fructose ,03 medical and health sciences ,chemistry.chemical_compound ,allocation ,starch storage ,glucose ,lcsh:QH301-705.5 ,Control level ,Biomass (ecology) ,photosynthesis ,biomass ,General Immunology and Microbiology ,Resistance (ecology) ,soluble sugars ,fungi ,food and beverages ,sucrose ,Horticulture ,hydraulic failure ,030104 developmental biology ,chemistry ,lcsh:Biology (General) ,Pinus tabulaeformis ,Chinese pine ,General Agricultural and Biological Sciences ,010606 plant biology & botany - Abstract
Intense and frequent drought events strongly affect plant survival. Non-structural carbohydrates (NSCs) are important “buffers” to maintain plant functions under drought conditions. We conducted a drought manipulation experiment using three-year-old Pinus tabulaeformis Carr. seedlings. The seedlings were first treated under different drought intensities (i.e., no irrigation, severe, and moderate) for 50 days, and then they were re-watered for 25 days to explore the dynamics of NSCs in the leaves, twigs, stems, and roots. The results showed that the no irrigation and severe drought treatments significantly reduced photosynthetic rate by 93.9% and 32.6% for 30 days, respectively, leading to the depletion of the starch storage for hydraulic repair, osmotic adjustment, and plant metabolism. The seedlings under moderate drought condition also exhibited starch storage consumption in leaves and twigs. After re-watering, the reduced photosynthetic rate recovered to the control level within five days in the severe drought group but showed no sign of recovery in the no irrigation group. The seedlings under the severe and moderate drought conditions tended to invest newly fixed C to starch storage and hydraulic repair instead of growth due to the “drought legacy effect”. Our findings suggest the depletion and recovery of starch storage are important strategies for P. tabulaeformis seedlings, and they may play key roles in plant resistance and resilience under environmental stress.
- Published
- 2021
47. Reconstruction of
- Author
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Chenchen, Gao, Jiarui, Yang, Tong, Hao, Jingjing, Li, and Jinsheng, Sun
- Subjects
nutrient requirement ,biomass ,feed ,Genetics ,genome-scale metabolic network ,Litopenaeus vannamei ,Original Research - Abstract
As an important tool for systematic analysis, genome-scale metabolic network (GSMN) model has been widely used in various organisms. However, there are few reports on the GSMNs of aquatic crustaceans. Litopenaeus vannamei is the largest and most productive shrimp species. Feed improvement is one of the important methods to improve the yield of L. vannamei and control water pollution caused by the inadequate absorption of feed. In this work, the first L. vannamei GSMN named iGH3005 was reconstructed and applied to the optimization of feed. iGH3005 was reconstructed based on the genomic data. The model includes 2,292 reactions and 3,005 genes. iGH3005 was used to analyze the nutritional requirements of five different L. vannamei commercial varieties and the genes influencing the metabolism of the nutrients. Based on the simulation, we found that tyrosine-protein kinase src64b like may catalyze different reactions in different commercial varieties. The preference of carbohydrate utilization is different in various commercial varieties, which may due to the different expressions of some genes. In addition, this investigation suggests that a rational and targeted modification in the macronutrient content of shrimp feed would lead to an increase in growth and feed conversion rate. The feed for different commercial varieties should be adjusted accordingly, and possible adjustment schemes were provided. The results of this work provided important information for physiological research and optimization of the components in feed of L. vannamei.
- Published
- 2021
48. Advanced Material‐Oriented Biomass Precise Reconstruction: A Review on Porous Carbon with Inherited Natural Structure and Created Artificial Structure by Post‐Treatment
- Author
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Guancong Jiang, Li Liu, Jingjing Xiong, Yiming Luo, Liangcheng Cai, Yu Qian, Hao Wang, Liwen Mu, Xin Feng, Xiaohua Lu, and Jiahua Zhu
- Subjects
Biomaterials ,Polymers and Plastics ,Materials Chemistry ,Bioengineering ,Biomass ,Porosity ,Biotechnology - Abstract
Manufacturing of porous carbon with biomass resources is intensively investigated in recent decades. The diversity of biomass species and great variety of processing methods enable the structural richness of porous carbon as well as their wide applications. This review specifically focuses on the structure of biomass-derived porous carbon either inherited from natural biomass or created by post-treatment. The intrinsic structure of plant biomass is briefly introduced and the utilization of the unique structures at different length-scales is discussed. In term of post-treatment, the structural features of activated carbon by traditional physical and chemical activation are summarized and compared in a wide spectrum of biomass species, statistical analysis is performed to evaluate the effectiveness of different activation methods in creating specific pore structures. The similar pore structure of biomass-derived carbon and coal-derived carbon suggests a promising replacement with more sustainable biomass resources in producing porous carbon. In summary, using biomass as porous carbon precursor endows the flexibility of using its naturally patterned microstructure and the tunability of controlled pore-creation by post-treatment.
- Published
- 2022
49. Enhancement of ammonium removal from landfill leachate using microalgae by an integrated strategy of nutrient balance and trophic mode conversion
- Author
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Li Jingjing, Jun Qian, Hugang Li, Qian Lu, Xiangqin Zhou, Jiali Cheng, Zeyu Jin, Xiru Zhang, Ting Wan, Qin Chen, Siyi Fu, Wenguang Zhou, and Junhang Tang
- Subjects
biology ,Environmental remediation ,Phosphorus ,Biomass ,chemistry.chemical_element ,biology.organism_classification ,Pulp and paper industry ,chemistry.chemical_compound ,Nutrient ,Wastewater ,chemistry ,Chlorella pyrenoidosa ,Ammonium ,Leachate ,Agronomy and Crop Science - Abstract
Landfill leachate is heavily-polluted wastewater generated from municipal solid wastes, which generally includes amounts of ammonium that are highly toxic to living organisms and the environment. The locally isolated microalgae have great potential in removing ammonium and producing value-added biomass from leachate. In this study, we determined the most robust algal strain, which was isolated and screened from a local landfill, and identified using the 18 s RNA gene sequences analysis. Subsequently, the integrated strategy of nutrient balance and trophic mode conversion was employed to make the leachate suitable for ammonium removal and algal growth. The results showed that a most robust, locally isolated strain NCU-9 (Nanchang University-9), was a promising strain and was selected out of four candidates and identified as Chlorella pyrenoidosa. This strain had a high tolerance to ammonium and leachate-borne bacteria when grown in unsterilized leachate. An optimal strategy was used, which included the nutrient balancing of nitrogen (N) to phosphorus (P) ratio (N/P) at 30:1 along with trophic mode conversion of N deprivation, to enhance the ammonium removal rate to as high as 95% in leachate remediation. The protein analysis of the cell composition was used to confirm this optimum strategy for ammonium removal, while the potential of NCU-9 was also considered as a value-added feedstock for animal feed in the downstream industry. Based on these results, we can conclude that microalgae-based leachate remediation has practical potential for nutrient recovery and biomass utilization.
- Published
- 2022
50. Soil Available Phosphorus Deficiency Reduces Boll Biomass and Lint Yield by Affecting Sucrose Metabolism in Cotton-Boll Subtending Leaves.
- Author
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Sun, Miao, Li, Pengcheng, Wang, Ning, Zheng, Cangsong, Sun, Xuezhen, Dong, Helin, Han, Huimin, Feng, Weina, Shao, Jingjing, and Zhang, Yufeng
- Subjects
PHOSPHORUS in soils ,BIOMASS ,PHOSPHATE rock ,RATIO & proportion ,PHOTOSYNTHETIC rates ,SUCROSE ,WATERLOGGING (Soils) - Abstract
Soil available phosphorus (AP) deficiency and shortage of phosphate rocks limit cotton production in China. Therefore, pool-culture experiments were conducted in 2019 and 2020 using two cotton cultivars (CCRI-79, low-P tolerant; SCRC-28, low-P sensitive) under three soil AP levels (P
0 : 3 ± 0.5, P1 : 6 ± 0.5, and P2 (control): 15 ± 0.5 mg kg−1 ) to ascertain the effect of soil AP on boll biomass and lint yield. P0 and P1 decreased the P concentration and net photosynthetic rate (Pn) of subtending leaves, thus, reducing boll biomass and lint yield. Additionally, soil AP deficiency decreased boll wall:boll, lint:boll, and lint:seed, and increased seed:boll ratio. Upper fruiting branch positions (FB9–12 ) had higher lint:seed ratio and proportion of the total lint yield under low soil AP. Moreover, soil AP deficiency also reduced the sucrose transformation rate (Tr) and activities of sucrose-metabolizing enzymes, such as ribulose-1,5-bisphosphate carboxylase-oxygenase (Rubisco), sucrose phosphate synthase (SPS), and sucrose synthase (SuSy), while increased carbohydrate levels (soluble sugar, sucrose, and starch) and the activity of cytosolic fructose-1,6-bisphosphatase (cy-FBPase) in the subtending leaves. The sucrose and starch contents, cy-FBPase, and SPS activities of SCRC-28 were more sensitive to low soil AP than CCRI-79. Higher Tr and activities of initial Rubisco and SuSy in the subtending leaves improved boll biomass and lint yield. [ABSTRACT FROM AUTHOR]- Published
- 2022
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