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Low-power energy harvester from constructed wetland-microbial fuel cells for initiating a self-sustainable treatment process

Citation

Srivastava, P and Belford, A and Abbassi, R and Asadnia, M and Garaniya, V and Yadav, AK, Low-power energy harvester from constructed wetland-microbial fuel cells for initiating a self-sustainable treatment process, Sustainable Energy Technologies and Assessments, 46 Article 101282. ISSN 2213-1388 (2021) [Refereed Article]


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DOI: doi:10.1016/j.seta.2021.101282

Abstract

This is the first study that demonstrates developing a Power Management System (PMS) for initiating a self-automated Constructed wetlands (CW)-microbial fuel cell (MFC). The developed PMS helps by harvesting and storing low power generated from CW-MFC and using it to operate an air-pump used as a part of treatment processes. The great potential for self generating energy harvestors to power electrical instruments makes the CW-MFC technology a sustainable candidate for many applications. In this paper, two laboratory-scale CW-MFC were used for this purpose, the cathode of one CW-MFC (R1) intermittently aerated (IA) with the self-automated air-pump, and the performance compared with the second CW-MFC (R2). An energy harvesting system was configured specifically optimised to suit the low energy output from the CW-MFC. The maximum power generated by R1 and R2 CW-MFC was 54.6 W and 41.2 W, respectively, which increased up to 90 W after IA. The pollutant treatment performance of R1 with IA increased significantly from R1 without aeration and R2 microcosms. The ammonium (NH4+) removal in R1_IA was 10% higher than R1 without aeration and 12% higher than in R2. With the IA, dissolved oxygen at the cathode of R1 increased, which influenced redox potential for better electron recovery and reduced the internal resistance. The use of generated energy from the system makes the technology self-sustainable and high performing.

Item Details

Item Type:Refereed Article
Keywords:power management system, fuel cell, wetlands, wastewater treatment, self-sustainable
Research Division:Engineering
Research Group:Chemical engineering
Research Field:Electrochemical energy storage and conversion
Objective Division:Commercial Services and Tourism
Objective Group:Water and waste services
Objective Field:Water recycling services (incl. sewage and greywater)
UTAS Author:Srivastava, P (Miss KM Pratiksha Srivastava)
UTAS Author:Abbassi, R (Dr Rouzbeh Abbassi)
UTAS Author:Garaniya, V (Associate Professor Vikram Garaniya)
ID Code:145062
Year Published:2021
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2021-06-29
Last Modified:2021-07-16
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