Significant enhancement of nitrous oxide energy yields from wastewater achieved by bioaugmentation with a recombinant strain of Pseudomonas aeruginosa.

ABSTRACT: Nitrous oxide (N₂O) is formed during wastewater nitrogen removal processes. It is a strong greenhouse gas, however, if properly captured it can also be used as a renewable energy source. In this study, a nosZ-deficient strain of Pseudomonas aeruginosa was constructed. During growth under denitrifying conditions, the nosZ-deficient strain was more highly transcribing other genes from the denitrification pathway (narG, nirS, and norB) than the wild-type strain. This strain could also convert 85% of NO₂^--N to N₂O when it was grown with acetate compared to <0.6% by the wild-type strain. When a bioreactor treating synthetic wastewater with high NO₂^--N concentrations (700 mg/L) was inoculated with this strain, the N₂O c

SUBMITTER: Lin Z 

PROVIDER: S-EPMC6085377 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature