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Performance assessment of aeration and radial oxygen loss assisted cathodes based integrated constructed wetland-microbial fuel cell systems

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Srivastava, P, Dwivedi, S, Kumar, N, Abbassi, R ORCID: 0000-0002-9230-6175, Garaniya, V ORCID: 0000-0002-0090-147X and Yadav, AK 2017 , 'Performance assessment of aeration and radial oxygen loss assisted cathodes based integrated constructed wetland-microbial fuel cell systems' , Bioresource Technology, vol. 39, no. 1 , pp. 1178-1182 , doi: 10.1016/j.biortech.2017.08.026.

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Abstract

The present study explores low-cost cathode development possibility using radial oxygen loss (ROL) of Canna indica plants and intermittent aeration (IA) for wastewater treatment and electricity generation in constructed wetland-microbial fuel cell (CW-MFC) system. Two CW-MFC microcosms were developed. Amongst them, one microcosm was planted with Canna indica plants for evaluating the ROL dependent cathode reaction (CW-MFC dependent on ROL) and another microcosm was equipped with intermittent aeration for evaluating the intermittent aeration dependent cathode reaction (CW-MFC with additional IA). The CW-MFC with additional IA has achieved 78.71% and 53.23%, and CW-MFC dependent on ROL has achieved 72.17% and 46.77% COD removal from synthetic wastewater containing glucose loads of 0.7 g L−1 and 2.0 gL−1, respectively. The maximum power density of 31.04 mW m−3 and 19.60 mW m−3 was achieved in CW-MFC with additional IA and CW-MFC dependent on ROL, respectively.

Item Type: Article
Authors/Creators:Srivastava, P and Dwivedi, S and Kumar, N and Abbassi, R and Garaniya, V and Yadav, AK
Keywords: constructed wetlands, microbial fuel cell, radial oxygen loss, intermittent aeration, cathode reaction,
Journal or Publication Title: Bioresource Technology
Publisher: Elsevier Sci Ltd
ISSN: 0960-8524
DOI / ID Number: 10.1016/j.biortech.2017.08.026
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© 2017 Elsevier Ltd. All rights reserved.

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