Quinones as terminal electron acceptors for anaerobic microbial oxidation of phenolic compounds |
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Authors: | Francisco J Cervantes Sjirk van der Velde Gatze Lettinga Jim A Field |
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Institution: | (1) Sub-Department of Environmental Technology, Wageningen University, Bomenweg 2, P.O. Box 8129, 6700 EV Wageningen, The Netherlands |
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Abstract: | The capacity of anaerobic granular sludge for oxidizing phenoland p-cresol under anaerobic conditions was studied. Phenol and p-cresolwere completely converted to methane when bicarbonate was the only terminal electron acceptor available. When the humic model compound, anthraquinone-2,6-disulfonate, was included as an alternative electron acceptor in the cultures, the oxidation of the phenolic compounds was coupled to the reduction of the model humic compound to its corresponding hydroquinone, anthrahydroquinone-2,6-disulfonate. These results demonstrate for the first time that the anaerobic degradation of phenolic compounds can be coupled to the reduction of quinones as terminal electron acceptor. |
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Keywords: | AQDS electron acceptor humus phenol quinones |
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