Biocatalysed sulphate removal in a BES cathode

M. Coma, S. Puig, N. Pous, M. D. Balaguer, J. Colprim

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)218-223
Number of pages6
JournalBioresource Technology
Volume130
DOIs
Publication statusPublished - Feb 2013

Keywords

  • Biocathode
  • Microbial electrolysis cell
  • Microbial fuel cell
  • Sulphate reduction

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

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