Effect of selenate and thiosulfate on anaerobic methanol degradation using activated sludge.

Author(s) Eregowda, T.; Rene, E.R.; Matanhike, L.; Lens, P.N.L.
Journal Environ Sci Pollut Res Int
Date Published 2020 Jan 21

Anaerobic bioconversion of methanol was tested in the presence of selenate (SeO), thiosulfate (SO), and sulfate (SO) as electron acceptors. Complete SeO reduction occurred at COD:SeO ratios of 12 and 30, whereas ~ 83% reduction occurred when the COD:SeO ratio was 6. Methane production did not occur at the three COD:SeO ratios investigated. Up to 10.1 and 30.9% of SO disproportionated to SO at COD:SO ratios of 1.2 and 2.25, respectively, and > 99% reduction was observed at both ratios. The presence of SO lowered the methane production by 73.1% at a COD:SO ratio of 1.2 compared to the control (no SO). This study showed that biogas production was not preferable for SeO and SO-rich effluents and volatile fatty acid production could be a potential resource recovery option.

DOI 10.1007/s11356-020-07597-8
ISSN 1614-7499
Citation Environ Sci Pollut Res Int. 2020.

Related Applications, Forms & Industries