通过在微生物电化学系统中的电极材料修改加强了硫甲醇降解
Xian Cao1, Haochi Zhang2, Yue Pan3
1College of Energy and Environment, Southeast University, Nanjing, 210096, China; Jiangsu Province Engineering Research Center of Soil and Groundwater Pollution Prevention and Control, Nanjing, 210036, China.
Journal of environmental management
|March 9, 2025
概括
使用导电聚合物和二氧化的修改电极通过增强电子转移和微生物活性,显著改善了微生物电化学系统中硫甲醇 (SMX) 的去除.
科学领域:
- 环境科学 环境科学
- 电化学 电化学 电化学
- 微生物学 微生物学
背景情况:
- 微生物电化学系统 (MES) 在水处理方面表现有前途.
- 电极修改是提高MES性能的一个关键策略.
- 硫甲醇 (SMX) 是一种持久性污染物,需要有效的去除方法.
研究的目的:
- 通过在MES中使用修改过的电极,提高在水中的SMX清除效率.
- 研究微生物电化学作用在SMX降解中的机制.
- 为了评估3,4-乙烯二氧化 (PEDOT) 改性碳纤维 (CF) 和MnO2-改性颗粒活性炭 (GAC) 电极的性能.
主要方法:
- 制造PEDOT/CF和MnO2/GAC修改电极. 这些电极的制造
- 在MES中进行SMX移除的性能评估,测量特定电容,内部电阻和电流.
- 微生物群体分析和SMX降解产品的识别.
主要成果:
- 修改后的电极显著增加了特定电容 (100.2 F·g-1用于PEDOT/CF,197.4 F·g-1用于MnO2/GAC).
- 内部电阻降低,平均电流增加了56%以上.
- 提高了11.8% (PEDOT/CF) 和12.9% (MnO2/GAC) 的SMX清除效率.
结论:
- 修改后的电极增强了MES中的电子传输能力.
- 增强的氧化还原反应和丰富的电活性微生物有助于SMX降解.
- 该研究表明了改善废水处理污染物去除的可行策略.
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