通过在无氧膜生物反应器中组装生物-无生物混合系统来增强电驱动的甲基生成
Zhuwu Jiang1, Yi Tang1, Xinyan Chen2
1College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China.
Bioresource technology
|November 1, 2023
概括
这项研究在废水处理中提高了82%的甲产量,使用了一种新的生物-无生物混合系统. 该Ni/Fe LDH@C-AGS材料改善了污泥结构,减少了膜污垢,提高了效率.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
背景情况:
- 生物-非生物混合系统显示出改善无氧废水处理中甲生产的潜力.
- 无氧颗粒污泥 (AGS) 中的密集的细胞外聚合物 (EPS) 阻碍了混合系统的实施和物种间电子转移.
研究的目的:
- 在无氧膜生物反应器 (AnMBR) 中研究一个Ni/Fe层次的双氧化@活性碳修饰AGS (Ni/Fe LDH@C-AGS) 的有效性.
- 评估这种混合系统对甲生产,EPS结构和膜污染的影响.
主要方法:
- 使用了带有Ni/Fe LDH@C-AGS的厌氧膜生物反应器 (AnMBR).
- 分析了EPS结构的变化,细胞染色体的产生和非导电性物质的分解.
- 评估了甲生产率和膜污染阻力.
主要成果:
- 与传统系统相比,甲产量增加了82%.
- Ni/Fe LDH@C有效调节了EPS结构,刺激了细胞染色体的产生,并促进了非导电物质的分解.
- 观察到81%的改善膜的抗污染性质,延长了膜的寿命.
结论:
- 使用Ni/Fe LDH@C-AGS的生物-无生物混合系统显著提高了AnMBR中的甲产量.
- 通过Ni/Fe LDH@C进行EPS结构调节是提高性能和减少膜污染的关键.
- 这种方法为有效的无氧废水处理和生物气产生提供了一个有希望的策略.
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