电刺激减轻了废水处理过程中混合微塑料对无氧消化的抑制作用
1College of Life Science, China West Normal University, Nanchong 637009, China; MOE Key Laboratory of Pollution Processes and Environmental Criteria / Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Environmental pollution (Barking, Essex : 1987)
|August 17, 2024
概括
微生物电合成 (MES) 有效地抵消了废水处理中的微塑料 (MP) 抑制. MES增强了甲回收和物质去除,减轻了MP的生物毒性,并促进了微生物活动.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
- 生物修复是一种生物修复.
背景情况:
- 微塑料 (MP) 通过抑制微生物活动和发酵,对无氧废水处理产生负面影响.
- 微生物电合成 (MES) 显示了通过增强微生物新陈代谢来管理耐火物质和回收甲的潜力.
研究的目的:
- 研究MES对被混合微塑料污染的废水的影响.
- 了解微生物在微塑性压力下对MES的反应.
主要方法:
- 评估在有或没有MES的无氧反应堆中在微塑料污染下甲的产生和物质的去除.
- 分析酶活性 (细胞染色体c,NADH,ATP) 和微生物压力指标 (EPS,ROS,LDH).
- 使用电刺激评估与甲代谢相关的微生物社区结构和基因表达.
主要成果:
- 混合MP抑制了甲的产生 (-52.38%) 和物质的去除 (-26.59%),但MES减轻了这些影响 (-22.86%, -19.01%).
- MES增加了关键的酶活性和微生物耐药性 (EPS),ROS和LDH略有增加.
- 电刺激丰富了功能性微生物,增强了甲代谢基因,并通过Methanothrix促进了acetoclastic甲生成.
结论:
- 在无氧废水处理中,MES有效地减轻混合微塑料的生物毒性.
- 通过支持微生物代谢和耐药性,MES增强了甲回收和废水整治.
- 应用电压和载体对于在甲基生成过程中能代谢和物质运输中MES效率至关重要.
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