期刊
BIORESOURCE TECHNOLOGY
卷 296, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.122290
关键词
Three-dimensional biofilm-electrode reactor; Zinc; Sulfadiazine; Ciprofloxacin; Antibiotic resistance gene
资金
- National Natural Science Foundation of China [41571476, 51978148, 51908292]
- National Major Science and Technology Projects of China [2017ZX07202004]
- Fundamental Research Funds for the Central Universities of SEU [2242017K41048]
- Scientific Research Foundation of Graduate School of Southeast University [YBPY1854]
Three-dimensional biofilm electrode reactors (3D-BERs) with high treatment efficiency were constructed to treat wastewater containing sulfadiazine (SDZ) and ciprofloxacin (CIP) coexposure with Zinc (Zn). The results showed that coexposure to target antibiotics and Zn increased the absolute and relative abundances of target antibiotic resistance genes (ARGs). Additionally, the target ARG abundances were higher on cathode of 3D-BER compared with ordinary anaerobic reactor while the abundances of total ARGs were decreased in the effluent. Meanwhile, redundancy analysis results revealed that the composition of bacteria carrying ARGs was greatly influenced in the cathode by the accumulation of Zn and antibiotic, which dominated the changes of ARG abundances. Additionally, ARGs with their host bacteria revealed by network analysis were partially deposited on electrode substrates when being removed from wastewater. Thus, 3D-BER exhibits capability of simultaneously eliminating antibiotic and Zn, and greatly reduces the risks of ARGs spread.
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