通过芬顿铁泥增强污泥甲基生成,改变无氧微生物的微环境,通过芬顿铁泥增强污泥甲基生成
Ming Wu1, Zhen-Hu Yang1, Tong-Bao Jiang1
1Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science & Technology, Tianjin, 300457, China.
Chemosphere
|August 30, 2023
概括
回收的芬顿铁泥通过增强污泥甲基生成,显著提高了无氧消化 (AD). 这种导电材料促进了微生物活动和直接的物种间电子转移 (DIET),增加了甲的产生.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 导电材料可以改善污泥甲生成.
- 导电材料,微生物及其环境之间的相互作用存在有限的研究.
- 芬顿铁泥是一种富含Fe (III) 的危险废物.
研究的目的:
- 调查使用回收的芬顿铁泥来增强无氧消化 (AD).
- 探索芬顿铁泥对微生物群落和电子转移的影响机制.
- 评估利用危险的芬顿铁泥用于污泥处理的潜力.
主要方法:
- 回收的芬顿铁泥被添加到无氧反应堆中.
- 分析了细胞外聚合物质 (EPS) 的含量和组成.
- 量化甲基生成速率和微生物群落结构.
- 研究了直接的物种间电子转移 (DIET) 和异型铁还原 (DIR).
主要成果:
- 芬顿铁泥显著增加了EPS含量,促进了微生物聚合.
- 氧化还原媒介 (性物质,Fe(III)) 加快了饮食,增强了甲基生成的35.21%.
- 丰富的功能性微生物,如减少CO2和减少Fe (III) 的细菌.
- 通过DIET和DIR确认了电子转移.
结论:
- 回收的芬顿铁泥有效促进无氧消化和污泥甲生成.
- 该机制涉及增强EPS生产,加速饮食和丰富特定微生物群体.
- 这项研究证明了一种可行的方法,用于回收危险的芬顿铁泥,以提高AD的性能.
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