增强Fe (III) 减少污泥发酵以形成维亚尼特,使用外源的H2辅助活性炭
Haoyang Li1, Yi Wang1, Linyan He1
1Key laboratory of the Three Gorges Reservoir Region's Eco-environments, Ministry of Education, Institute of Environment and Ecology, Chongqing University, 174 Shapingba Road, Chongqing, 400045, China.
Water research
|October 30, 2024
概括
和活性炭通过促进异样化铁还原 (DIR) 来增强维亚尼特的形成. 这种方法可以提高铁的降解率和维亚尼特的产量,同时抑制竞争性甲生成,为管理提供了一种新的方法.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 微生物学 微生物学
背景情况:
- 维维亚尼特是一种通过模拟性铁还原 (DIR) 形成的矿物质,具有控制缩和修复缺乏的潜力.
- 目前在生物生物的产生方面存在的局限性包括由甲基生成产生的电子竞争和缓慢的Fe (III) 减少速率.
研究的目的:
- 调查使用 (H2) 作为电子捐赠体,辅助活性炭 (AC),以增强Fe (III) 减少和维亚尼特形成.
- 阐明H2和AC影响微生物通路和Fe (III) 减少的机制.
主要方法:
- 使用H2作为电子捐赠剂与活性炭 (AC) 促进Fe降解使用FePO4作为电子接受器.
- 分析了Fe (III) 减少速率,生物形成速率,微生物群落组成和与代谢途径相关的基因表达的变化.
主要成果:
- H2和H2 / AC分别增加了23.8%和34.3%的Fe (III) 减少,也提高了化物形成率.
- H2通过直接还原和homoacetogenesis-乙酸盐途径促进了Fe(III) 的减少,同时抑制了甲基生成.
- 电流改善了电子转移,增强了酶活动,丰富了溶解铁减少细菌 (DIRB),并充当了电子穿器.
结论:
- 2和AC有效地促进Fe (III) 降解和维亚尼特的形成,为环境应用提供了一个有前途的战略.
- 综合方法减轻了电子竞争,并增强了微生物DIR过程.
- 这项研究为优化维亚尼特合成的管理和安化控制提供了新的见解.
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