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化矿加速硫代谢和电子转移,推动向的微生物燃料电池脱
1Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, MOE), School of Environmental Science and Technology, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, PR China.
Bioresource technology
|August 16, 2024
概括
在硫基微生物燃料电池中添加化酸盐显著提高了电子利用率和从地下水中去除酸盐. 这种具有成本效益的方法增强了微生物活动,从而使水处理更清洁.
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:
- 硫粉是一种经济,环保的电子捐赠剂,用于微生物燃料电池去化 (S) 被酸盐污染的地下水.
- 在硫氧化 (ACE) 中电子利用的低效率限制了基于硫的脱的有效性.
研究的目的:
- 通过向硫系统 (SCP) 添加化矿来提高微生物燃料电池的ACE和脱性能.
- 调查化矿对电子生成,转移效率和微生物社区结构的影响.
主要方法:
- 使用双室微生物燃料电池系统,使用硫粉 (S) 和化矿 (SCP).
- 测量了酸盐去除率和ACE.
- 使用分子技术分析微生物群落和功能基因.
主要成果:
- 该SCP系统实现了3.55±0.01毫克N/L/h的最高酸盐去除率.
- 与S系统相比,SCP系统中的ACE高出103%.
- pyrite促进了功能性细菌 (Burkholderiales,Thiomonas,Sulfurovum) 和相关基因的丰富.
结论:
- 加化酸盐的添加显著提高了微生物燃料电池中的电子利用率和脱效率.
- 在不影响水质的情况下,SCP是有效地从地下水中去除酸盐的有希望的策略.
- 增强的微生物活动和电子转移是提高性能背后的关键机制.
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