Hedbavna, P., Rolfe, S.A., Huang, W.E. et al. (1 more author) (2016) Biodegradation of phenolic compounds and their metabolites in contaminated groundwater using microbial fuel cells. Bioresource Technology, 200. pp. 426-434. ISSN 0960-8524
Abstract
This is the first study demonstrating the biodegradation of phenolic compounds and their organic metabolites in contaminated groundwater using bioelectrochemical systems (BESs). The phenols were biodegraded anaerobically via 4-hydroxybenzoic acid and 4-hydroxy-3-methylbenzoic acid, which were retained by electromigration in the anode chamber. Oxygen, nitrate, iron(III), sulfate and the electrode were electron acceptors for biodegradation. Electro-active bacteria attached to the anode, producing electricity (~1.8 mW/m2), while utilizing acetate as an electron donor. Electricity generation started concurrently with iron reduction; the anode was an electron acceptor as thermodynamically favorable as iron(III). Acetate removal was enhanced by 40% in the presence of the anode. However, enhanced removal of phenols occurred only for a short time. Field-scale application of BESs for in situ bioremediation requires an understanding of the regulation and kinetics of biodegradation pathways of the parent compounds to relevant metabolites, and the syntrophic interactions and carbon flow in the microbial community.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 Elsevier Ltd |
Keywords: | Microbial fuel cells; Bioremediation; Groundwater; Phenol; Contaminants |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 22 Jan 2016 14:48 |
Last Modified: | 22 Jan 2016 14:48 |
Published Version: | http://dx.doi.org/10.1016/j.biortech.2015.09.092 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.biortech.2015.09.092 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:92767 |