A horizontal plug flow and stackable pilot microbial fuel cell for municipal wastewater treatment.
An application-oriented stackable horizontal MFC (SHMFC) was designed and proved to be capable for sewage treatment and simultaneously energy recovery. The system consisted of multiple stackable 250L modules, which is the largest single MFC module by far. Domestic wastewater was fed into SHMFC in horizontal advection. During the stable operation period, a maximum current 0.435±0.010A in each module was observed under the external resistance of 1Ω and the maximum power density was 116mW. The effluent COD was 70±17mgL(-1) with a removal rate of 79±7% and the effluent TN was 13±3mgL(-1) with a removal rate of 71±8%. From the comparison between SHMFC module (250L) and 4-cm cubic MFC (28mL), the internal resistance distribution changes and the contact resistance becomes assignable and even limiting factor in the enlargement.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China. Electronic address: yujief@hit.edu.cn.
Yujie
Y
Feng
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China.
Weihua
W
He
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China.
Jia
J
Liu
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China; Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
Xin
X
Wang
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China.
Youpeng
Y
Qu
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, No. 73 Huanghe Road, Nangang District, Harbin 150090, China.
Nanqi
N
Ren
D001674:Bioelectric Energy Sources / Q000191:economics; D057919:Biological Oxygen Demand Analysis; D002681:China; D002947:Cities; D003365:Costs and Cost Analysis; D004560:Electricity; D004566:Electrodes; D010865:Pilot Projects; D012722:Sewage / Q000737:chemistry; D062065:Wastewater / Q000191:economics / Q000382:microbiology*; D018508:Water Purification / Q000191:economics / Q000295:instrumentation*
D012722:Sewage; D062065:Wastewater
Electricity generation; Microbial fuel cell; Sewage wastewater treatment; Stackable horizontal MFC (SHMFC)