TY - JOUR
T1 - Insights into the mechanism, performance and electrode modification of BES-AD combined systems for refractory wastewater treatment
T2 - A review
AU - Xie, Jiawei
AU - Chang, Yaofeng
AU - Xie, Junxiang
AU - Adams, Mabruk
AU - Zhao, Danqing
AU - Chen, Chongjun
AU - Ma, Ji
AU - Zhu, Guoying
AU - Zhang, Tian C.
N1 - Funding Information:
This work was financially supported by the China Postdoctoral Science Foundation (No. 2020M671400 ), Natural Science Foundation of Jiangsu Province (No. BK20201450 ), Jiangsu Qing Lan Project, Suzhou Science and Technology Planning Project (No. SS202016 and No. ss2019022 ), Opening Fund of Jiangsu Provincial Key Laboratory of Environmental Science and Engineering (No. Zd1804 ), Pre-research Fund of Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment ( XTCXSZ2019-3 ) and Graduate Research Innovation Program of Jiangsu Province ( KYCX20_2780 ).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2021/4
Y1 - 2021/4
N2 - Using conventional anaerobic digestion to treat refractory wastewater has several drawbacks such as long start-up period, temperature sensitivity, volatile fatty acids (VFAs) accumulation and so on. The coupling of the bioelectrochemical systems with anaerobic digestion (BES-AD) has been proposed to enhance the degradation of refractory pollutants. In this review, the mechanism of BES-AD is firstly discussed. Then, the performance of BES-AD is evaluated with respect to different types of wastewater, anaerobic reactors, electrode materials and microbial communities associated with different systems. The embedding of BES addresses the accumulation of VFA and accelerates the start-up period, thus, allows for the growth of various microbial communities in the system. Novel electrodes with high biocompatibility and large specific surface area can be fabricated by the bioelectrodes-based modification and used for synergistic reinforcement of the system by combining macroscopic effects with microscopic biological mechanisms. However, the modification of BES electrodes is deemed to be the key for further improving BES performance.
AB - Using conventional anaerobic digestion to treat refractory wastewater has several drawbacks such as long start-up period, temperature sensitivity, volatile fatty acids (VFAs) accumulation and so on. The coupling of the bioelectrochemical systems with anaerobic digestion (BES-AD) has been proposed to enhance the degradation of refractory pollutants. In this review, the mechanism of BES-AD is firstly discussed. Then, the performance of BES-AD is evaluated with respect to different types of wastewater, anaerobic reactors, electrode materials and microbial communities associated with different systems. The embedding of BES addresses the accumulation of VFA and accelerates the start-up period, thus, allows for the growth of various microbial communities in the system. Novel electrodes with high biocompatibility and large specific surface area can be fabricated by the bioelectrodes-based modification and used for synergistic reinforcement of the system by combining macroscopic effects with microscopic biological mechanisms. However, the modification of BES electrodes is deemed to be the key for further improving BES performance.
KW - Anaerobic digestion (AD)
KW - Bioelectrochemical system (BES)
KW - Electrode modification
KW - Refractory wastewater
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U2 - 10.1016/j.jwpe.2020.101895
DO - 10.1016/j.jwpe.2020.101895
M3 - Article
AN - SCOPUS:85098560267
SN - 2214-7144
VL - 40
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
M1 - 101895
ER -