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Performance of pilot-scale horizontal subsurface flow constructed wetland coupled with a microbial fuel cell for treating wastewater

Citation

Srivastava, P and Abbassi, R and Garaniya, V and Lewis, T and Yadav, AK, Performance of pilot-scale horizontal subsurface flow constructed wetland coupled with a microbial fuel cell for treating wastewater, Journal of Water Process Engineering, 33 Article 100994. ISSN 2214-7144 (2020) [Refereed Article]

Copyright Statement

2019 Elsevier Ltd. All rights reserved.

DOI: doi:10.1016/j.jwpe.2019.100994

Abstract

This work presents a new hybrid technology for treating wastewater along with electricity generation. The main objective of this work was to integrate a microbial fuel cell (MFC) into a horizontal subsurface constructed wetland (HSSF-CW-MFC) at a pilot scale for improving the wastewater treatment performance of HSSF-CW. The HSSF-CW-MFC was tested on three different organic loading rates: 0.15, 0.30, and 0.52 kg COD/m3/d at a set hydraulic retention time. The HSSF-CW-MFC was further studied for establishing the influence of electron transfer using conductive material (artificial electron acceptor) on wastewater treatment performance. During the efficient electron transfer (system run in closed-circuit operation), 33.7% higher chemical oxygen demand (COD) removal was achieved in comparison to the hindered electron transfer (system run in open circuit) condition. The results illustrate that efficient electron transfer from bottom anaerobic zones to the aerobic zone of the HSSF-CW helps in enhancing the treatment performance. The maximum power and current densities achieved were 11.67 mW/m3and 17.15 mA/m3, respectively.

Item Details

Item Type:Refereed Article
Keywords:constructed wetland, microbial fuel cell, constructed wetland-microbial fuel cell, open circuit, closed circuit
Research Division:Engineering
Research Group:Environmental engineering
Research Field:Environmentally sustainable engineering
Objective Division:Environmental Management
Objective Group:Fresh, ground and surface water systems and management
Objective Field:Measurement and assessment of freshwater quality (incl. physical and chemical conditions of water)
UTAS Author:Srivastava, P (Miss KM Pratiksha Srivastava)
UTAS Author:Garaniya, V (Associate Professor Vikram Garaniya)
UTAS Author:Lewis, T (Associate Professor Trevor Lewis)
ID Code:136207
Year Published:2020 (online first 2019)
Web of Science® Times Cited:28
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2019-12-05
Last Modified:2021-07-19
Downloads:0

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