Parameters affecting acetate concentrations during in-situ biological hydrogen methanation

Surplus electricity may be supplied to anaerobic digesters as H2 gas to upgrade the CH4 content of biogas. Acetate accumulation has been observed following H2 injections, but the parameters determining the degree of acetate accumulation are not well understood. The pathways involved during H2 consumption and acetate kinetics were evaluated in continuous lab reactors and parallel batch 13C experiments. Acetate accumulation increased during...