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Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils
The absence of suitable terminal electron acceptors (TEA) in soil might limit the oxidative metabolism of environmental microbial populations. Bioelectroventing is a bioelectrochemical strategy that aims to enhance the biodegradation of a pollutant in the environment by overcoming the electron accep...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5743802/ https://www.ncbi.nlm.nih.gov/pubmed/28643961 http://dx.doi.org/10.1111/1751-7915.12687 |
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author | Domínguez‐Garay, Ainara Quejigo, Jose Rodrigo Dörfler, Ulrike Schroll, Reiner Esteve‐Núñez, Abraham |
author_facet | Domínguez‐Garay, Ainara Quejigo, Jose Rodrigo Dörfler, Ulrike Schroll, Reiner Esteve‐Núñez, Abraham |
author_sort | Domínguez‐Garay, Ainara |
collection | PubMed |
description | The absence of suitable terminal electron acceptors (TEA) in soil might limit the oxidative metabolism of environmental microbial populations. Bioelectroventing is a bioelectrochemical strategy that aims to enhance the biodegradation of a pollutant in the environment by overcoming the electron acceptor limitation and maximizing metabolic oxidation. Microbial electroremediating cells (MERCs) are devices that can perform such a bioelectroventing. We also report an overall profile of the (14)C‐ATR metabolites and (14)C mass balance in response to the different treatments. The objective of this work was to use MERC principles, under different configurations, to stimulate soil bacteria to achieve the complete biodegradation of the herbicide (14)C‐atrazine (ATR) to (14) CO (2) in soils. Our study concludes that using electrodes at a positive potential [+600 mV (versus Ag/AgCl)] ATR mineralization was enhanced by 20‐fold when compared to natural attenuation in electrode‐free controls. Furthermore, ecotoxicological analysis of the soil after the bioelectroventing treatment revealed an effective clean‐up in < 20 days. The impact of electrodes on soil bioremediation suggests a promising future for this emerging environmental technology. |
format | Online Article Text |
id | pubmed-5743802 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-57438022018-01-03 Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils Domínguez‐Garay, Ainara Quejigo, Jose Rodrigo Dörfler, Ulrike Schroll, Reiner Esteve‐Núñez, Abraham Microb Biotechnol Research Articles The absence of suitable terminal electron acceptors (TEA) in soil might limit the oxidative metabolism of environmental microbial populations. Bioelectroventing is a bioelectrochemical strategy that aims to enhance the biodegradation of a pollutant in the environment by overcoming the electron acceptor limitation and maximizing metabolic oxidation. Microbial electroremediating cells (MERCs) are devices that can perform such a bioelectroventing. We also report an overall profile of the (14)C‐ATR metabolites and (14)C mass balance in response to the different treatments. The objective of this work was to use MERC principles, under different configurations, to stimulate soil bacteria to achieve the complete biodegradation of the herbicide (14)C‐atrazine (ATR) to (14) CO (2) in soils. Our study concludes that using electrodes at a positive potential [+600 mV (versus Ag/AgCl)] ATR mineralization was enhanced by 20‐fold when compared to natural attenuation in electrode‐free controls. Furthermore, ecotoxicological analysis of the soil after the bioelectroventing treatment revealed an effective clean‐up in < 20 days. The impact of electrodes on soil bioremediation suggests a promising future for this emerging environmental technology. John Wiley and Sons Inc. 2017-06-23 /pmc/articles/PMC5743802/ /pubmed/28643961 http://dx.doi.org/10.1111/1751-7915.12687 Text en © 2017 The Authors. Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Domínguez‐Garay, Ainara Quejigo, Jose Rodrigo Dörfler, Ulrike Schroll, Reiner Esteve‐Núñez, Abraham Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
title | Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
title_full | Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
title_fullStr | Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
title_full_unstemmed | Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
title_short | Bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
title_sort | bioelectroventing: an electrochemical‐assisted bioremediation strategy for cleaning‐up atrazine‐polluted soils |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5743802/ https://www.ncbi.nlm.nih.gov/pubmed/28643961 http://dx.doi.org/10.1111/1751-7915.12687 |
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