人工湿地-微生物燃料电池耦合系统对农药处理效能的研究
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延边大学

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TM911.45; X703

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中央引导地方科技发展资金吉林省基础研究专项(202002023JC); 吉林省教育厅科学技术研究项目(JJKH20210571KJ); 大连理工工业生态与环境工程教育部重点实验室开放基金项目(KLIEEE-20-06)


Research on pesticide treatment efficiency of constructed wetland-microbial fuel cell coupling system
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Yanbian University

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    摘要:

    本文构建了人工湿地-微生物燃料电池耦合系统处理以阿特拉津为代表的农药, 以了解该系统的农药处理效能及处理机理. 结果显示, 该系统对阿特拉津具有较好的处理性能. 当阿特拉津浓度小于4 mg/L时, 系统的处理性能稳定保持在85%以上; 当阿特拉津浓度为4 mg/L时, 系统产电性能最优, 此时, 系统输出平均日电压, 最大功率密度及电流密度分别为284.4 mV、19.64 mW/m3及46.09 mA/m3. 农药对系统微生物多样性的影响显著, 而对微生物基因功能的影响不显著, 对系统菌属的影响小于电场. 系统优势菌门有变形菌门, 优势电化学活性菌门有拟杆菌门和厚壁菌门; 而降解农药优势菌门有放线菌门, 优势菌纲有Alphaproteobacteria与Actinobacteria, 优势菌属有Christensenellaceae_R-7_group.

    Abstract:

    In this study, a constructed wetland-microbial fuel cell system was constructed to treat pesticides represented by Atrazine, and to understand the pesticide treatment efficiency and treatment mechanism of the system. The results show that the system has a good treatment performance for Atrazine. When the concentration of Atrazine is less than 4 mg/L, the treatment performance of the system remains stable above 85%. Under the condition of Atrazine concentration of 4 mg/L, the system has the best power generation performance. At this time, the average daily voltage, maximum power density and current density of the system output are 284.4 mV, 19.64 mW/m3 and 46.09 mA/m3, respectively. Pesticides have a significant impact on the microbial diversity of the system, but have no significant impact on microbial gene function, and have less impact on system bacteria than the electric field. The dominant bacteria phylum of the system includes the Proteobacteria, and the dominant electrochemically active bacteria includes the Bacteroides and Firmicutes, while the dominant bacteria phylum degrading pesticides includes the Actinobacteria, the dominant bacteria classes includes Alphaproteobacteria and Actinobacteria, and the dominant bacteria genus includes Christensenellaceae_R-7_group.

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引用本文格式: 姜松鹤,朴文华,金明姬. 人工湿地-微生物燃料电池耦合系统对农药处理效能的研究[J]. 四川大学学报: 自然科学版, 2021, 58: 065001.

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  • 收稿日期:2021-06-23
  • 最后修改日期:2021-07-13
  • 录用日期:2021-08-03
  • 在线发布日期: 2021-11-25
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