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Bifunctional cathode using a biofilm and Pt/C catalyst for simultaneous electricity generation and nitrification in microbial fuel cells
Jin, Xiaojun; Yang, Nuan; Liu, Yuan; Guo, Fei; Liu, Hong
2020-06-01
摘要Biofouling frequently causes catalyst deterioration at the cathode of microbial fuel cells (MFCs). A biofilm-covered PVC cathode (BPC) was fabricated via in situ cultivation of a biofilm on a PVC cathode (PC) in a dual-chambered MFC, which enables effective removal of NH4+-N and copious generation of electricity. Experimental results show 99% NH4+-N removal by the nitrifying bacteria that constitute 35.7% of all microorganisms on the BPC and a maximum BPC-MFC power density of 0.97 W/m(2), which is comparable to that of PC-MFCs (0.99 W/m(2)). BPC biofilm size is restricted by the limited amount of organic material in the cathode chamber, which constrains the biomass to less than 0.3 g (protein) /m(2). The bifunctional-cathode equipped MFC shows great promise as an energy-saving technology for wastewater treatment in the future.
关键词Microbial fuel cells Biofilm-covered Pt/C cathode (BPC) Electrochemical Nitrification Biomass
DOI10.1016/j.biortech.2020.123120
发表期刊BIORESOURCE TECHNOLOGY
ISSN0960-8524
卷号306页码:8
通讯作者Liu, Hong(liuhong@cigit.ac.cn)
收录类别SCI
WOS记录号WOS:000531800500010
语种英语