集成的甲微生物燃料电池系统,通过自性阴极生物还原同时去除和硫
Jing Lu1, Xinyu Li1, Yating Jia1
1School of the Environment and Safety Engineering, North University of China, Taiyuan 030051, China.
Bioelectrochemistry (Amsterdam, Netherlands)
|September 23, 2025
概括
这项研究开发了一种微生物燃料电池 (MFC),使用甲来减少酸盐和硫酸盐,产生电力. 虽然混合电子接受器减少了去除速度,但它们增强了甲氧化和电压输出.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 电化学 电化学 电化学
背景情况:
- 微生物燃料电池 (MFC) 在废水处理方面表现有前途.
- 自营养有机体可以以正极方式降低酸盐和硫酸盐.
- 在MFC中以甲为驱动的酸盐和硫酸盐的减少需要进一步研究.
研究的目的:
- 开发和研究一种以甲为驱动的MFC,用于同时降低酸盐和硫酸盐,并与发电相结合.
- 在不同的电子受体条件下分析微生物群落和代谢途径.
- 评估混合电子接受器对去除效率和能量输出的影响.
主要方法:
- 使用溶解的甲作为电子捐赠体,构建了一个带有自性生物阴极的MFC.
- 在单个 (酸盐或硫酸盐) 和混合 (酸盐 + 硫酸盐) 电子受体条件下运行MFC.
- 使用16S rRNA测序和与甲,硫和脱代谢相关的基因表达分析了微生物社区结构.
主要成果:
- 单个酸盐和硫酸盐去除率分别达到89.1%和26%.
- 混合电子接受器减少了酸盐和硫酸盐的去除速度,但促进了甲的无氧氧化 (AOM) 和最大化的输出电压.
- 在阳极和阴极室中确定了微生物群落,其中特定的属性占主导地位.
- 在同时存在的条件下,甲代谢基因被上调,而硫和脱基因被下调.
结论:
- 甲驱动的MFC可以同时减少酸盐和硫酸盐,为废水处理提供了一种新的方法.
- 优化混合电子受体的条件可以增强AOM和发电.
- 了解微生物社区动态和基因表达对于提高MFC在处理和硫污染物的效率至关重要.
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