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在以甲为动力的生物电化学系统中,同时进行脱和发电
Long Chen1, Yanli Guo1, Shaohui Zhang1,2
1School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, China.
概括
这项研究展示了一种新的生物电化学系统 (BES),可以同时消除甲和酸盐污染. 开发的脱无氧甲氧化BES有效地将甲转化为电力,同时净化水.
科学领域:
- 环境科学 环境科学
- 环境工程 环境工程
- 电化学 电化学 电化学
背景情况:
- 生物电化学系统 (BES) 为控制酸盐污染提供了一个有希望的方法.
- 在BES中使用甲作为电子捐赠体进行脱的用途尚不清楚.
- 解决酸盐污染问题对于环境保护和水质至关重要.
研究的目的:
- 调查使用甲作为电子捐赠体用于BES中脱化的可行性.
- 建立和描述一个脱的厌氧甲氧化BES (DAMO-BES).
- 评估同时去除甲和酸盐和发电的效率.
主要方法:
- 启动DAMO-BES,使用现有BES的废水作为注射剂.
- 在受控的pH值和温度下使用酸盐缓冲溶液运行DAMO-BES.
- 甲基因组分析以确定微生物群落和参与甲氧化和脱的功能基因.
主要成果:
- 在92天内成功启动了DAMO-BES.
- 甲的最大去除负荷为0.23 mmol/d,酸盐的最大去除负荷为551.0 mg N/m3 /d,总的最大去除负荷为64.0 mg N/m3 /d.
- 获得了93mV的峰值电压,6.99%的阳极库伦比效率和219.86mW/m3的最大功率密度.
- 甲基因组学揭示了阴极中的占主导地位的脱细菌和阳极中的甲基/甲基,通过反向甲基生成转化甲.
结论:
- DAMO-BES是一种可行的技术,可以同时去除甲和酸盐.
- 该系统有效地将甲转化为电力,同时净化废水.
- 甲基囊的物种在阳极的厌氧甲氧化和阴极的脱中起着关键作用.
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