Methane oxidation coupled to vanadate reduction in a membrane biofilm batch reactor under hypoxic condition.

Author(s) Wang, Z.; Shi, L.D.; Lai, C.Y.; Zhao, H.P.
Journal Biodegradation
Date Published 2019 Aug 13
Abstract

This study shows vanadate (V(V)) reduction in a methane (CH) based membrane biofilm batch reactor when the concentration of dissolved oxygen (O) was extremely low. V(IV) was the dominant products formed from V(V) bio-reduction, and majority of produced V(IV) transformed into precipitates with green color. Quantitative polymerase chain reaction and Illumina sequencing analysis showed that archaea methanosarcina were significantly enriched. Metagenomic predictive analysis further showed the enrichment of genes associated with reverse methanogenesis pathway, the key CH-activating mechanism for anaerobic methane oxidation (AnMO), as well as the enrichment of genes related to acetate synthesis, in archaea. The enrichment of aerobic methanotrophs Methylococcus and Methylomonas implied their role in CH activation using trace level of O, or their participation in V(V) reduction.

DOI 10.1007/s10532-019-09887-6
ISSN 1572-9729
Citation Wang Z, Shi L-, Lai C-, Zhao H-. Methane oxidation coupled to vanadate reduction in a membrane biofilm batch reactor under hypoxic condition. Biodegradation. 2019.

Related Applications, Forms & Industries