期刊
BIORESOURCE TECHNOLOGY
卷 302, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.122761
关键词
Bio-photoelectrochemical system (BPES); g-C3N4/CdS photocathode optimization; Microbial community; Nitrofurazone degradation
资金
- National Science Foundation of China [21707021, 51668006]
- Natural Science Foundation of Guangxi [2017GXNSFBA198186]
- China Postdoctoral Science Foundation [2018M633295]
- Guangxi Science and Technology Research Program [AA17202032]
- Open Fund of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control [KF201723]
- Guangxi Bossco Environmental Protection Technology Co., Ltd. [BRP180261]
To further enhance the bio-photoelectrochemical system (BPES) performance for nitrofurazone (NFZ) degradation and current output, the g-C3N4/CdS photocathode was optimized, and microbial community shift from inoculation to the BPES was analyzed. Results showed that photocathode with g-C3N4/CdS (mass ratio of 1:9) loading of 7.5 mg/cm(2) exhibited the best performance, with NFZ removal of 83.14% (within 4 h) and current of similar to 9 mA in the BPES. Proteobacteria accounted for the largest proportion: 66.53% (inoculation), 71.89% (microbial electrolysis cell (MEC) anode), 74.67% (BPES anode) and 57.31% (BPES cathode), respectively. In addition, Geobacter was the most dominant genus in MEC and BPES anode and cathode, which occupied 31.64%, 67.73% and 41.34%, respectively. The microbial compositions of BPES anode and cathode were similar, but different from that of MEC anode. Notably, Rhodopseudomonas, a photosynthetic species, was detected in the BPES. Cognition of microbial community in the BPES is important for advancing its development.
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