Extracellular electron transfer for aerobic denitrification mediated by the bioelectric catalytic system with zero-carbon source DOI Creative Commons
Kun Wang, Wentao Du,

Zilian Liu

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 268, P. 115691 - 115691

Published: Nov. 17, 2023

The slow rate of electron transfer and the large consumption carbon sources are technical bottlenecks in biological treatment wastewater. Here, we first proposed to domesticate aerobic denitrifying bacteria (ADB) from heterotrophic autotrophic by electricity (0.6 V) under zero organic source conditions, accelerate shorten hydraulic retention time (HRT) while increasing biodegradation rate. Then investigated extracellular (EET) mechanism mediated this process, additionally examined integrated nitrogen removal efficiency system with composite pollution. It was demonstrated that compared traditional membrane bioreactor (MBR), BEC displayed higher efficiency. Especially at C/N = 0, exhibited a NO3--N 95.42 ± 2.71 % for 4 h, which about 6.5 times than MBR. Under compound pollution condition, still maintained high tetracycline (94.52 2.01 91.50 0.001 %), greatly superior MBR (10.64 12.00 0.019 %). In addition, in-situ electrochemical tests showed nitrate could be directly converted N2 reduction using electrons cathode, successfully as terminal acceptor.

Language: Английский

The operating temperature affects the efficiency and pathogenic risk of wastewater treatment enhanced by slurry DOI
Heng Wu, Tianyu Yang,

Bingbing Huang

et al.

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 188, P. 1306 - 1317

Published: June 14, 2024

Language: Английский

Citations

2
Enhanced nutrients removal from low C/N ratio rural sewage by embedding heterotrophic nitrifying bacteria and activated alumina in a tidal flow constructed wetland DOI

Yanlin Wang,

Yanling Yang, Xu Tan

et al.

Bioresource Technology, Journal Year: 2024, Volume and Issue: unknown, P. 131513 - 131513

Published: Sept. 1, 2024

Language: Английский

Citations

2
Identification and relative contributions of environmental driving factors for abundant and rare bacterial taxa to thermal stratification evolution DOI
Ziwei Zhang,

Chenbin Wu,

Yiling Di

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 232, P. 116424 - 116424

Published: June 15, 2023

Language: Английский

Citations

6
Adapting to seasonal temperature variations: A dynamic multi-subunit strategy for sulfur autotrophic denitrification bioreactors DOI

Yilu Sun,

Han-Lin Wang,

Huu Hao Ngo

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 240, P. 117493 - 117493

Published: Oct. 27, 2023

Language: Английский

Citations

5
Extracellular electron transfer for aerobic denitrification mediated by the bioelectric catalytic system with zero-carbon source DOI Creative Commons
Kun Wang, Wentao Du,

Zilian Liu

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2023, Volume and Issue: 268, P. 115691 - 115691

Published: Nov. 17, 2023

The slow rate of electron transfer and the large consumption carbon sources are technical bottlenecks in biological treatment wastewater. Here, we first proposed to domesticate aerobic denitrifying bacteria (ADB) from heterotrophic autotrophic by electricity (0.6 V) under zero organic source conditions, accelerate shorten hydraulic retention time (HRT) while increasing biodegradation rate. Then investigated extracellular (EET) mechanism mediated this process, additionally examined integrated nitrogen removal efficiency system with composite pollution. It was demonstrated that compared traditional membrane bioreactor (MBR), BEC displayed higher efficiency. Especially at C/N = 0, exhibited a NO3--N 95.42 ± 2.71 % for 4 h, which about 6.5 times than MBR. Under compound pollution condition, still maintained high tetracycline (94.52 2.01 91.50 0.001 %), greatly superior MBR (10.64 12.00 0.019 %). In addition, in-situ electrochemical tests showed nitrate could be directly converted N2 reduction using electrons cathode, successfully as terminal acceptor.

Language: Английский

Citations

4