Bioelectricity generation from air-cathode microbial fuel cell connected to constructed wetland | Zendy

Dengming Yan | Zendy; Xinshan Song | Zendy; Baisha Weng | Zendy; Zhilei Yu | Zendy; Wuxia Bi | Zendy; Junfeng Wang | Zendy

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Bioelectricity generation from air-cathode microbial fuel cell connected to constructed wetland

Author(s) -

Dengming Yan,

Xinshan Song,

Baisha Weng,

Zhilei Yu,

Wuxia Bi,

Junfeng Wang

Publication year - 2018

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2018.471

Subject(s) - microbial fuel cell , constructed wetland , cathode , bioenergy , chemical oxygen demand , wastewater , environmental science , sewage treatment , power density , environmental engineering , pollutant , electricity generation , chemistry , pulp and paper industry , environmental chemistry , waste management , electrode , power (physics) , anode , biofuel , physics , engineering , organic chemistry , quantum mechanics

The aim of this study was to investigate the different performance of bioelectricity generation and wastewater treatment between constructed wetland (CW) respectively coupled with air-cathode microbial fuel cell (ACMFC) and microbial fuel cell (MFC) under a fed-batch mode. During a 75-day-operation, the voltage of CW-ACMFC and CW-MFC ranged from 0.36 to 0.52 V and from -0.04 to 0.07 V, indicating that the bioenergy output of CW-ACMFC was significantly higher than that of CW-MFC system. In addition, the maximum of power density of CW-ACMFC and CW-MFC was 4.21 and 0.005 mW m -2 . Notably, the chemical oxygen demand (COD) and NH 3 -N removal efficiency of CW-ACMFC was slightly higher than that in CW-MFC, which resulted from a higher voltage accelerating the transport of electron donors and the growth of microorganisms and plants. This study possesses a probability of using ACMFC coupled with CW to enhance the pollutant removal performance in CW system.

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