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

Pratiksha Srivastava; Saurabh Dwivedi; Naresh Kumar; Rouzbeh Abbassi; Vikram Garaniya; Asheesh Kumar Yadav

doi:10.1016/j.biortech.2017.08.026

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

Bioresour Technol. 2017 Nov;244(Pt 1):1178-1182. doi: 10.1016/j.biortech.2017.08.026. Epub 2017 Aug 9.

Authors

Pratiksha Srivastava¹, Saurabh Dwivedi², Naresh Kumar³, Rouzbeh Abbassi⁴, Vikram Garaniya⁴, Asheesh Kumar Yadav⁵

Affiliations

¹ CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India; Australian Maritime College (AMC), University of Tasmania, Launceston 7250, Australia.
² Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
³ Department of Geological Sciences, Stanford University, Stanford, CA 94305-2210, USA.
⁴ Australian Maritime College (AMC), University of Tasmania, Launceston 7250, Australia.
⁵ CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India. Electronic address: asheesh@immt.res.in.

PMID: 28844691
DOI: 10.1016/j.biortech.2017.08.026

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 0.7gL^-1and 2.0gL^-1, respectively. The maximum power density of 31.04mWm^-3 and 19.60mWm^-3 was achieved in CW-MFC with additional IA and CW-MFC dependent on ROL, respectively.

Keywords: Cathode reaction; Constructed wetland-microbial fuel cell; Intermittent aeration; Microbial fuel cell; Radial oxygen loss.

MeSH terms

Bioelectric Energy Sources*
Electricity
Electrodes
Oxygen
Wastewater
Wetlands*

Substances

Waste Water
Oxygen