磁铁减轻无氧颗粒污泥 (AnGS) 的化:增强电子转移和离子竞争
Linlin Chen1, Ruoxuan Yuan2, Xiangyang Xu3
1School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, China; Institution of Environment Pollution Control and Treatment, Department of Environmental Engineering, Zhejiang University, Hangzhou 310058, China.
The Science of the total environment
|February 16, 2024
概括
在高废水处理过程中,添加磁石减轻了无氧颗粒污泥 (AnGS) 的化和失活. 它通过改善电子转移和阻断与细胞外聚合物物质相互作用来增强生物气体的生产.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 材料科学 材料科学 材料科学
背景情况:
- 无氧颗粒污泥 (AnGS) 的化和消活在高废水处理中构成挑战.
- 离子 (Ca2+) 和细胞外聚合物质 (EPS) 之间的相互作用是这个问题的关键因素.
研究的目的:
- 调查磁石在高应力下用于同时恢复活动和缓解AnGS化的使用.
- 了解磁石减轻这些问题的机制.
主要方法:
- 在高环境中添加磁石到AnGS中.
- 测量生物气生产和酶活动.
- 微生物社区分析 (甲基生物和合成细菌).
- AnGS的特征,包括含量和EPS组成.
- 批量测试用于评估铁和离子之间的相互作用.
主要成果:
- 相对生物气产量增加了13.2%,加上磁铁.
- 关键甲基生成酶和电子转移系统 (ETS) 的活性增加了18%.
- 观察到甲沙辛的占主导地位和合成细菌的丰富.
- 颗粒化得到缓解,含量下降了13-40%.
- 铁在EPS中部分取代,减少EPS分泌并干扰Ca2+-EPS相互作用.
结论:
- 磁铁增强了AnGS中的电子转移和微生物活动.
- 磁石有效地减轻颗粒化,通过与Ca2+竞争EPS结合.
- 磁铁石为使用AnGS处理高废水提供了一个有前途的解决方案.
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