期刊
BIORESOURCE TECHNOLOGY
卷 320, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.124371
关键词
Electrical stimulation; Biodegradation; Microbial community; Refractory phenolics
资金
- National Natural Science Foundation of China [51968067]
- Natural Science Foundation of Xinjiang Uygur Autonomous Region of China [2018D01C044]
- Doctoral Program Foundation of Xinjiang University [BS180237]
An electrically stimulated anaerobic-aerobic coupled system has been developed to improve the biodegradation of refractory phenolics, showing that intermittent electrical stimulation could be a potential alternative for the efficient degradation of refractory phenolics.
An electrically stimulated anaerobic-aerobic coupled system was developed to improve the biodegradation of refractory phenolics. Expected 4-nitrophenol, 2, 4-dinitrophenol, and COD removals in the system with aerobic cathodic and anaerobic anodic chambers were approximately 53.7%, 45.4%, 22.3% (intermittent mode) and 37.9%, 19.8%, 17.3% (continuous mode) higher than that in the control system (26.0 +/- 6.4%, 30.7 +/- 7.1%, 49.8 +/- 3.0%). 2, 4-dichlorophenol removal in the system with aerobic anodic and anaerobic cathodic chambers was approximately 28.5% higher than that in the control system (71.4 +/- 5.7%). The contribution of the aerobic cathodic/anodic chambers to the removal of phenolic compounds was higher than that of the anaerobic cathodic/anodic chambers. The species related to phenolic biodegradation (Rhodococcus, Achromobacter, PSB -M3, and Sphingobium) were enriched in the cathodic and anodic chambers of the system. These results showed that intermittent electrical stimulation could be a potential alternative for the efficient degradation of refractory phenolics.
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