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Biocatalysed sulphate removal in a BES cathode

Sulphate reduction in a biological cathode and physically separated from biological organic matter oxidation has been studied in this paper. The bioelectrochemical system was operated as microbial fuel cell (for bioelectricity production) to microbial electrolysis cell (with applied voltage). Sulphate reduction was not observed without applied voltage and only resulted when the cathodic potential was poised at -0.26 V vs. SHE, with a minimum energy requirement of 0.7 V, while maximum removal occurred at 1.4 V applied. The reduction of sulphate led to sulphide production, which was entrapped in the ionic form thanks to the high biocathode pH (i.e. pH of 10) obtained during the process

This research was financially supported by the Spanish Government (CSD2007-00055, CTQ2011-23632 and IPT-2011-1073-310000)

© Bioresource Technology, 2013, vol. 130, p. 218-223

Elsevier

Author: Coma Bech, Marta
Puig Broch, Sebastià
Pous Rodríguez, Narcís
Balaguer i Condom, Maria Dolors
Colprim Galceran, Jesús
Date: 2013 February 1
Abstract: Sulphate reduction in a biological cathode and physically separated from biological organic matter oxidation has been studied in this paper. The bioelectrochemical system was operated as microbial fuel cell (for bioelectricity production) to microbial electrolysis cell (with applied voltage). Sulphate reduction was not observed without applied voltage and only resulted when the cathodic potential was poised at -0.26 V vs. SHE, with a minimum energy requirement of 0.7 V, while maximum removal occurred at 1.4 V applied. The reduction of sulphate led to sulphide production, which was entrapped in the ionic form thanks to the high biocathode pH (i.e. pH of 10) obtained during the process
This research was financially supported by the Spanish Government (CSD2007-00055, CTQ2011-23632 and IPT-2011-1073-310000)
Format: application/pdf
ISSN: 0960-8524
Document access: http://hdl.handle.net/10256/11530
Language: eng
Publisher: Elsevier
Collection: MEC/PN 2007-2013/CSD2007-00055
MICINN/PN 2012-2014/CTQ2011-23632
Reproducció digital del document publicat a: http://dx.doi.org/10.1016/j.biortech.2012.12.050
Articles publicats (D-EQATA)
Is part of: © Bioresource Technology, 2013, vol. 130, p. 218-223
Rights: Tots els drets reservats
Subject: Bioelectroquímica
Bioelectrochemistry
Biofilms
Aigües residuals -- Depuració -- Oxidació
Sewage -- Purification -- Oxidation
Title: Biocatalysed sulphate removal in a BES cathode
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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