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Your search keyword '"Awasthi, Mukesh Kumar"' showing total 27 results
Start Over Author "Awasthi, Mukesh Kumar" Journal chemosphere
27 results on '"Awasthi, Mukesh Kumar"'

26. Conversion food waste and sawdust into compost employing black soldier fly larvae (diptera: Stratiomyidae) under the optimized condition.

Author

Liu, Tao, Awasthi, Sanjeev Kumar, Qin, Shiyi, Liu, Huimin, Awasthi, Mukesh Kumar, Zhou, Yuwen, Jiao, Minna, Pandey, Ashok, Varjani, Sunita, and Zhang, Zengqiang

Subjects
*COMPOSTING, *DIPTERA, *LARVAE, *LABOR costs, *FATTY acids, *WOOD waste, *COLE crops
Abstract

The increasing number of food waste (FW) had led to an urgent methods to recycle, black soldier fly larvae (BSFL) was a potential quick waste manager. To assess the impact of BSFL on conversion FW and sawdust into compost via the parameters of maturity, nutrient transformation and volatile fatty acids (VFAs). Meanwhile, the artificial of FW contained noodles, cabbages, rice and pork. FW and sawdust were employed by BSFL (6.5:0.5:1.2 ratio on fresh weight basis) as T1 and without BSFL called control (T2), while moisture content for FW and sawdust was 86.57% and 5.98%. Results illustrated that BSFL declined the composting time and only 9 d. Compared with initial mixture materials, T1 decreased organic matter, total kjeldahl nitrogen and VFAs from 97.41 to 85.96%, 23.01 to 17.77 g kg−1 and 3.25 to 1.69 g kg−1, respectively. However, T1 increased the total phosphorous and total potassium in 3.8 folds and 5 folds. The value of pH and EC reached at 4.27 and 1100 μS cm−1, and the germination index attained to 70.69%. In addition, redundancy analysis was used to analysis the correlation between factors under composting employed with different additive ratio of BSFL. Therefore, BSFL played a vital role in FW and sawdust recycling, especially reduced composting time and made the final separation of larvae and substrate easily, saving labor costs. [Display omitted] • Black Soldier fly larvae (BSFL) took 9 d to biotransform food waste and sawdust. • BSFL treatment caused highest organic matter and volatile fatty acids degradation. • Addition BSFL increased total phosphorus and potassium in compost by 3.8 and 5 folds. • Employing of BSFL increased the germination index and reached 70.96%. [ABSTRACT FROM AUTHOR]

Published
2021
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27. Supplementation of CO 2 -nanobubble water to enhance the methane production from anaerobic digestion of corn straw.

Author

Song H, Hou T, Jiao Y, Liu L, Pan X, Li G, Zhang Q, Zeng Y, Cui Z, Li P, Awasthi MK, and He C

Subjects
Anaerobiosis, Carbon Dioxide, Water, Methane, Dietary Supplements, Biofuels, Bioreactors, Zea mays
Abstract

Nanobubble water (NBW) could improve methane production from anaerobic digestion (AD) of corn straw without secondary contamination. In this study, the effect of carbon dioxide nanobubble water (CO 2 -NBW) volumes (0%, 25%, 50%, 75%, 100%) on methane production from corn straw was investigated. The results showed that addition of CO 2 -NBW could improve methane production and promote substrate degradation in AD process. The highest cumulative methane production of 132.16 mL g -1 VS added was obtained in the 100% CO 2 -NBW added reactor, which was 17% higher than that in the control group. Additionally, the addition of CO 2 -NBW could mitigate the sharp decrease in pH by acting as a buffer. CO 2 -NBW could also enhance microorganism activity throughout the AD process. The electron transport system (ETS) activity was increased by 23%, while the β-glucosidase, dehydrogenase (DHA), and coenzyme F 420 activities were increased by 15%, 23%, and 11%, respectively, at optimum addition of CO 2 -NBW. Meanwhile, addition of CO 2 -NBW accelerated the production and consumption of reducing sugar and volatile fatty acids (VFAs), promoting the reduction rates of TS (Total solid) and VS (Volatile solid)., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)

Published
2023
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