Understanding the impacts of intermittent electro field on the bioelectrochemical aniline degradation system: Performance, microbial community and functional enzyme

Wu，Nanping1; Zhang，Qian1; Tan，Bin3; Su，Junhao1; Feng，Jiapeng1,4; Zhang，Yunjie1; He，Jing1; Li，Meng1,2; He，Qi1

2023-08-15

10.1016/j.envres.2023.116039

Environmental Research   影响因子和分区

0013-9351

1096-0953

On account of the lack of a sustainable electron donor source and the inhibitory effect of aniline on denitrogenation make it tough to achieve simultaneous removal of aniline and nitrogen. Herein, the strategy of adjusting electric field mode was applied to the electro-enhanced sequential batch reactors (E-SBRs: R1 (continuous ON), R2 (2 h-ON/2 h-OFF), R3 (12 h-ON/12 h-OFF), R4 (in the aerobic phase ON), R5 (in the anoxic phase ON)) to treat aniline wastewater. Aniline removal rate reached approximately 99% in the five systems. Decreasing electrical stimulation interval from 12 to 2 h significantly improved the electron utilization efficiency for aniline degradation and nitrogen metabolism. The total nitrogen removal was achieved from 70.31% to 75.63%. Meanwhile, the hydrogenotrophic denitrifiers of Hydrogenophaga, Thauera, and Rhodospirillales, enriched in reactors of minor electrical stimulation interval. Accordingly, the expression of functional enzyme related to electron transport was incremental with the proper electrical stimulation frequency.

Aniline wastewater Electric field mode Interspecies relationship Microbial community Nitrogen removal

SCI

英语

其他

Hainan Provincial Department of Science and Technology[ZDKJ2021024];

Environmental Sciences & Ecology ; Public, Environmental & Occupational Health

Environmental Sciences ; Public, Environmental & Occupational Health

WOS:000998600100001

ACADEMIC PRESS INC ELSEVIER SCIENCE

ENVIRONMENT/ECOLOGY

2-s2.0-85154020278

Scopus

1.School of Civil Engineering & Architecture,Wuhan University of Technology,Wuhan,430070,China
2.Sanya Science and Education Innovation Park,Wuhan University of Technology,Hainan,572024,China
3.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
4.China Engineering Corporation,Changsha,410000,China

Wu，Nanping,Zhang，Qian,Tan，Bin,et al. Understanding the impacts of intermittent electro field on the bioelectrochemical aniline degradation system: Performance, microbial community and functional enzyme[J]. Environmental Research,2023,231.

Wu，Nanping.,Zhang，Qian.,Tan，Bin.,Su，Junhao.,Feng，Jiapeng.,...&He，Qi.(2023).Understanding the impacts of intermittent electro field on the bioelectrochemical aniline degradation system: Performance, microbial community and functional enzyme.Environmental Research,231.

Wu，Nanping,et al."Understanding the impacts of intermittent electro field on the bioelectrochemical aniline degradation system: Performance, microbial community and functional enzyme".Environmental Research 231(2023).