Power production and microbial community composition in thermophilic acetate-fed up-flow and flow-through microbial fuel cells

Dessi, Paolo and Chatterjee, Pritha and Mills, Simon and et al, . (2019) Power production and microbial community composition in thermophilic acetate-fed up-flow and flow-through microbial fuel cells. Bioresource Technology, 294. p. 122115. ISSN 09608524

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Abstract

The microbial communities developed from a mixed-species culture in up-flow and flow-through configurations of thermophilic (55 °C) microbial fuel cells (MFCs), and their power production from acetate, were investigated. The up-flow MFC was operated for 202 days, obtaining an average power density of 0.13 W/m3, and Tepidiphilus was the dominant transcriptionally-active microorganisms. The planktonic community developed in the up-flow MFC was used to inoculate a flow-through MFC resulting in the proliferation of Ureibacillus, whose relative abundance increased from 1 to 61% after 45 days. Despite the differences between the up-flow and flow-through MFCs, including the anode electrode, hydrodynamic conditions, and the predominant microorganism, similar (p = 0.05) volumetric power (0.11–0.13 W/m3), coulombic efficiency (16–18%) and acetate consumption rates (55–69 mg/L/d) were obtained from both. This suggests that though MFC design can shape the active component of the thermophilic microbial community, the consortia are resilient and can maintain similar performance in different MFC configurations.

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IITH Creators:
IITH CreatorsORCiD
Chatterjee, PrithaUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Attached community, Bioelectrochemical system, Electrogenic microorganisms, MFC, Microbial electrochemical technology, Planktonic community, Indexed in Scopus
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: Team Library
Date Deposited: 03 Oct 2019 06:09
Last Modified: 03 Oct 2019 06:09
URI: http://raiith.iith.ac.in/id/eprint/6473
Publisher URL: http://doi.org/10.1016/j.biortech.2019.122115
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