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Stimulating soil microorganisms for mineralizing the herbicide isoproturon by means of microbial electroremediating cells.
Microb. Biotechnol. 9, 369-380 (2016)
The absence of suitable terminal electron acceptors (TEA) in soil might limit the oxidative metabolism of environmental microbial populations. Microbial electroremediating cells (MERCs) consist in a variety of bioelectrochemical devices that aim to overcome electron acceptor limitation and maximize metabolic oxidation with the purpose of enhancing the biodegradation of a pollutant in the environment. The objective of this work was to use MERCs principles for stimulating soil bacteria to achieve the complete biodegradation of the herbicide (14) C-isoproturon (IPU) to (14) CO2 in soils. Our study concludes that using electrodes at a positive potential [+600 mV (versus Ag/AgCl)] enhanced the mineralization by 20-fold respect the electrode-free control. We also report an overall profile of the (14) C-IPU metabolites and a (14) C mass balance in response to the different treatments. The remarkable impact of electrodes on the microbial activity of natural communities suggests a promising future for this emerging environmental technology that we propose to name bioelectroventing.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Fuel-cells; Organic Pollutants; Contaminated Sediments; Anaerobic Degradation; Aromatic-hydrocarbons; Sandy Aquifer; Bioremediation; Metabolites; Electrode; Energy
ISSN (print) / ISBN
1751-7907
e-ISSN
1751-7915
Journal
Microbial Biotechnology
Quellenangaben
Volume: 9,
Issue: 3,
Pages: 369-380
Publisher
Wiley
Publishing Place
Hoboken
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Research Unit Microbe-Plant Interactions (AMP)