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Your search keyword '"Junjian Zheng"' showing total 2 results
Start Over Author "Junjian Zheng" Journal bioresource technology
2 results on '"Junjian Zheng"'

1. Recent advances in membrane biofilm reactor for micropollutants removal: Fundamentals, performance and microbial communities

Author

Zhouyan Li, Yiwen Qiao, Lehui Ren, Jinxing Ma, Xuesong Li, Zhiwei Wang, and Junjian Zheng

Subjects
Environmental Engineering, Coronavirus disease 2019 (COVID-19), Renewable Energy, Sustainability and the Environment, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), Microbiota, Biofilm, Bioengineering, Membranes, Artificial, General Medicine, Research needs, Wastewater, Waste Disposal, Fluid, Human health, Bioreactors, Biofilms, Ecological security, Environmental science, Humans, Water treatment, Biochemical engineering, Waste Management and Disposal, Water Pollutants, Chemical
Abstract

The occurrence of micropollutants (MPs) in water and wastewater imposes potential risks on ecological security and human health. Membrane biofilm reactor (MBfR), as an emerging technology, has attracted much attention for MPs removal from water and wastewater. The review aims to consolidate the recent advances in membrane biofilm reactor for MPs removal from the standpoint of fundamentals, removal performance and microbial communities. First, the configuration and working principles of MBfRs are reviewed prior to the discussion of the current status of the system. Thereafter, a comprehensive review of the MBfR performance for MPs elimination based on literature database is presented. Key information on the microbial communities that are of great significance for the removal performance is then synthesized. Perspectives on the future research needs are also provided in this review to ensure the development of MBfRs for more cost-effective elimination of MPs from water and wastewater.

Published
2021

2. Efficacy of a novel electrochemical membrane-aerated biofilm reactor for removal of antibiotics from micro-polluted surface water and suppression of antibiotic resistance genes

Author

Zhiwei Wang, Junjian Zheng, Lehui Ren, Mei Chen, Zhouyan Li, Qiaoying Wang, and Chenxin Tian

Subjects
Environmental Engineering, Sulfamethoxazole, medicine.drug_class, Antibiotics, Bioengineering, Wastewater, urologic and male genital diseases, complex mixtures, Bioreactors, medicine, Waste Management and Disposal, Renewable Energy, Sustainability and the Environment, Chemistry, Biofilm, Water, Drug Resistance, Microbial, General Medicine, equipment and supplies, bacterial infections and mycoses, Trimethoprim, female genital diseases and pregnancy complications, Anti-Bacterial Agents, Membrane, Environmental chemistry, Biofilms, Degradation (geology), Aeration, Surface water, medicine.drug
Abstract

An electrochemical membrane-aerated biofilm reactor (EMABR) was developed for removing sulfamethoxazole (SMX) and trimethoprim (TMP) from contaminated water. The exertion of electric field greatly enhanced the degradation of SMX and TMP in the EMABR (~60%) compared to membrane-aerated biofilm reactor (MABR,10%), due to the synergistic effects of the electro-oxidation (the generation of reactive oxygen species) and biological degradation. Microbial community analyses demonstrated that the EMABR enriched the genus of Xanthobacter, which was potentially capable of degrading aromatic intermediates. Moreover, the EMABR had a lower relative abundance of antibiotic resistance genes (ARGs) (0.23) compared to the MABR (0.56), suggesting the suppression of ARGs in the EMABR. Further, the SMX and TMP degradation pathways were proposed based on the detection of key intermediate products. This study demonstrated the potential of EMABR as an effective technology for removing antibiotics from micro-polluted surface water and suppressing the development of ARGs.

Published
2021

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