Abstract
The potential of a trickling bioreactor (TBR) for the gas-phase treatment of N 2 O in the range of 0.9 to 7.5 g m -3 in the presence of two separate carbon sources (glucose and phenol) and ammonium chloride as the nitrogen source was investigated under anoxic condition. With glucose, at the carbon to nitrogen supplying ratio (C:N) of 1.5, removal efficiency (RE) of 60%, and elimination capacity (EC) of 10.1 g m -3 h -1 were obtained for N 2 O at an inlet concentration of 4.2 g m -3 , corresponding to an inlet loading rate (ILR) of 16 g m -3 h -1 . Also, for the co-treatment of N 2 O and phenol, the highest RE of 71±1% was obtained when N 2 O and phenol concentrations were 0.36±0.04 g m -3 and 850 mg L -1 , respectively. Also, based on the whole genome sequencing analysis for the TBR treating phenol and N 2 O, Castellaniella , Acidovorax , Stenotrophomonas , Sphingopyxis , and Diaphorobacter were the dominant species. • N 2 O was treated in a trickling bioreactor (TBR) using glucose or phenol. • Carbon (glucose) to nitrogen ratio of 1.5 was optimum for N 2 O denitrification. • 71% of N 2 O could be removed in the presence of initial phenol at 850 mg L -1 . • Microbial shift to a more diverse community facilitated sustainable TBR operation. • Castellaniella defragrans and Acidovorax ebreus were the dominant species.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call