volume 38, issue 6, P1368-1375 2004
DOI: 10.1016/j.watres.2003.11.028
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F.A.M. de Bok, C.M. Plugge, A.J.M. Stams

Abstract: Propionate is a key intermediate in the conversion of complex organic matter under methanogenic conditions. Oxidation of this compound requires obligate syntrophic consortia of acetogenic proton- and bicarbonate reducing bacteria and methanogenic archaea. Although H(2) acts as an electron-carrier in these consortia, evidence accumulates that formate plays an even more important role. To make energy yield from propionate oxidation energetically feasible for the bacteria and archaea involved, the concentrations …

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