Sustainable treatment of nitrate-containing wastewater by an autotrophic hydrogen-oxidizing bacterium.

ABSTRACT: Bacteria are key denitrifiers in the reduction of nitrate (NO₃ ^--N), which is a contaminant in wastewater treatment plants (WWTPs). They can also produce carbon dioxide (CO₂) and nitrous oxide (N₂O). In this study, the autotrophic hydrogen-oxidizing bacterium Rhodoblastus sp. TH20 was isolated for sustainable treatment of NO₃ ^--N in wastewater. Efficient removal of NO₃ ^--N and recovery of biomass nitrogen were achieved. Up to 99% of NO₃ ^--N was removed without accumulation of nitrite and N₂O, consuming CO₂ of 3.25 mol for each mole of NO₃ ^--N removed. The overall removal rate of NO₃ ^--N reached 1.1 mg L

SUBMITTER: Chen YZ 

PROVIDER: S-EPMC9487994 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature