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- aggregation classification "A1".
- aggregation creator B572301.
- aggregation creator B572302.
- aggregation creator B572303.
- aggregation creator B572304.
- aggregation creator person.
- aggregation date "2009".
- aggregation format "application/pdf".
- aggregation hasFormat 2009264.bibtex.
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- aggregation isPartOf urn:issn:0013-936X.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Technology and Engineering".
- aggregation title "Role of sulfur during acetate oxidation in biological anodes".
- aggregation abstract "The treatment of wastewater containing sulfides in bioelectrochemical systems (BES) causes deposition of sulfur on the anode as a result of a solely electrochemical process. In this study, we investigate whether microorganisms can use this sulfur, rather than the anode or soluble sulfate, as an electron acceptor for the oxidation of acetate. Our results indicate that microorganisms use electrode posited sulfur as preferable electron acceptor over the anode and sulfate and produce sulfide irrespective of electrochemical conditions. Bioelectrochemical and biological sulfide generation pathways were studied under different electrochemical conditions. The obtained results show that the sulfide generation rate at open circuit condition (anode potential -235 +/- 5 mV versus standard hydrogen electrode,SHE)was higher in comparison to the electrochemical sulfide generation even at a lower potential of -275 mV (vs SHE), confirming that sulfide is produced through biological processes without any current generation. However, during closed circuit operation, the overall Coulombic efficiency (97% +/- 2%) is not affected as the produced sulfide (originating from the reduction of deposited sulfur) is spontaneously reoxidized to sulfur when a favorable potential is maintained. This confirms the mediator role of sulfur during acetate oxidation in BES. A diagrammatic representation of the mechanism is proposed to characterize the interactions between acetate oxidation and sulfur conversions on the anode.".
- aggregation authorList BK923467.
- aggregation endPage "3845".
- aggregation issue "10".
- aggregation startPage "3839".
- aggregation volume "43".
- aggregation aggregates 2009271.
- aggregation isDescribedBy 2009264.
- aggregation similarTo es803682k.
- aggregation similarTo LU-2009264.