2.山东省高校水资源与水环境工程重点实验室,济南 250022
1.School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China
2.Key Laboratory of Water Resources and Environmental Engineering in Universities of Shandong (University of Jinan), Jinan 250022, China
为探究微生物燃料电池型人工湿地处理抗生素废水的效果,构建了闭路运行(CW-MFC1)与开路运行(CW-MFC2)的微生物燃料电池型人工湿地,研究了不同电路运行模式下微生物燃料电池型人工湿地对氮、COD以及抗生素的去除效果,并对阳极与阴极的微生物群落及其与污染物去除效果的关系进行了探究。结果表明,闭路运行模式下CW-MFC对
-N的去除效果低于开路运行模式。16SrDNA测序结果表明:闭路运行模式下CW-MFC阳极具有更高的微生物丰富度和多样性;不同电路运行模式对阳极与阴极门水平上的微生物群落结构影响较小,但对属水平上的微生物组成有显著的影响。冗余分析结果表明,CW-MFC对污染物的去除率随着绝大多数阳极与阴极的细菌属的相对丰度增加而增加,但随着阳极的
相对丰度的增加而减少。以上研究结果表明,闭路运行模式下CW-MFC处理高浓度抗生素废水具有更好的潜力。
To explore the treating effect of wastewater containing antibiotic by microbial fuel cell integrated with constructed wetland, microbial fuel cell integrated with constructed wetlands were designed to explore the removal effects of nitrogen, COD and antibiotics under different circuit operation modes: the closed circuit operation mode (CW-MFC1) and the open circuit operation mode (CW-MFC2). Meanwhile, the microbial communities of anode and cathode and their correlation with pollutants removal were also explored. The results showed that the removal efficiencies of
-N, TN, COD and ciprofloxacin hydrochloride (CIPH) and sulfamethoxazole (SMX) in the closed circuit operation mode were significantly higher than those in the open circuit operation mode (
-N in the closed circuit operation mode was lower than that in the open circuit operation mode. The results of 16SrDNA sequencing showed that the anode in CW-MFC had higher microbial richness and diversity in the closed circuit mode. At the same time, different circuit operation mode of CW-MFC had slight effect on the microbial community structure on phylum level at the anode and cathode, but had a significant effect on the microbial community structure on the genus level. Redundancy analysis showed that the removal rate of pollutants by CW-MFC increased with the increase of the relative abundance of most bacteria genera at anodes and cathodes, but decreased only with the increase of the relative abundance of
at the anodes. The results indicated that, CW-MFC in the closed circuit operation mode had better potential in the treatment of wastewater with high concentration of antibiotics.
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Schematic diagram of CW-MFC installation
-N, TN, and COD in the effluent of microbial fuel cell integrated with constructed wetland under open and close circuit operation modes
开闭路运行模式下微生物燃料电池型人工湿地出水中抗生素的质量浓度
Mass concentrations of antibiotics in the effluent of CW-MFCs under open and close circuit operation modes
开闭路运行模式下微生物燃料电池型人工湿地阳极与阴极细菌门与属的相对丰度
Relative abundance of bacterial phyla and genus at the two CW-MFCs anodes and cathodes under open and close circuit operation modes
微生物属与氮去除率以及出水COD和抗生素质量浓度间关系的冗余分析(RDA)
Redundancy analysis (RDA) of the relationships among the bacterial genus and N removal rate and mass concentration of COD and antibiotic in effluent
The mean quality concentrations and removal rates of pollutant in influents and effluents of microbial fuel cell integrated with constructed wetlands under open and close circuit operation modes
Diversity indices of the microbial communities in anode and cathode of CW-MFCs under open and close circuit operation modes
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