Simultaneous sulfide removal and electricity generation with corn stover biomass as co-substrate in microbial fuel cells
2013
Zhang, Jing | Zhang, Baogang | Tian, Caixing | Ye, Zhengfang | Liu, Ye | Lei, Zhongfang | Huang, Wenli | Feng, Chuanping
Microbial fuel cells (MFCs), representing a promising method to treat combined pollutants with energy recovery, were utilized to remove sulfide and recover power with corn stover filtrate (CSF) as the co-substrate in present study. A maximum power density of 744mW/m2 was achieved with sulfide removal of 91% during 72h operation when the CSF concentrations (mg-COD/l) and the electrolyte conductivity were set at 800mg/l and 10.06mS/cm, respectively, while almost 52% COD was removed due to the microbial degradation of CSF to the volatile organic carbons. CSF concentrations and electrolyte conductivities had significant effects on the performance of the MFCs. Simultaneous removals of inorganic pollutant and complex organic compounds with electricity generation in MFCs are reported for the first time. These results provide a good reference for multiple contaminations treatment especially sulfide containing wastewaters based on the MFC technology.
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