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原料和老化轮胎微塑料对过剩污泥无氧发酵的比较影响

Kai Hu¹, Hao Ding², Wei Wang³

¹Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.

Journal of hazardous materials

|February 11, 2026

概括

轮胎微塑料 (TM) 和老旧的TM (ATM) 抑制了污泥发酵,减少了有机物和挥发性脂肪酸. 机器显示剂量依赖的负面影响,而TM的影响因度而异,影响微生物群落和电子转移.

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:

轮胎微塑料 (TMs) 是微塑料污染的重要来源,在废水处理污泥中积累.
老化过程和TM和老化TM (ATM) 的度变化可能会影响污泥中的生物过程.

研究的目的:

研究TM和ATM对过剩污泥无氧发酵的度依赖作用.
阐明这些影响背后的机制,包括对有机物质水解,微生物群落和电子转移的影响.

主要方法:

在不同度的TM和ATM下对过剩的污泥无氧发酵进行系统检查.
对挥发性脂肪酸,可溶性化学氧气需求,蛋白质和多糖的分析.
评估细胞外聚合物质 (EPS) 和微生物社区动态.
测量电子传输系统活动和污泥导电性.

主要成果:

无论是TM还是ATM,都对酸性发酵和有机物水解产生了负面影响.
低TMs度 (0.002μg/g-VSS) 和高ATM度 (0.2μg/g-VSS) 显著减少了关键发酵产品 (16.28%40.40%).
TM和ATM触发了EPS分泌作为一种防御机制,对结合的EPS组件产生不同的影响.
TMs比ATM更有效地增强了物种间电子传输 (IET),尽管两者都提高了电子传输效率.

结论:

TM和ATM对污泥无氧发酵产生不利影响,ATM显示剂量依赖的影响.
微生物反应包括EPS生产和改变的电子转移动态,TM显示出IET增强的更大潜力.
了解这些差异性影响对于优化污泥处理过程中的TM管理至关重要.

关键词:

酸性生成 (Acidogenesis) 是一种产生酸性的过程.老化过程的老化过程.无氧发酵是无氧发酵的方法.两种物种之间的电子转移.轮胎中的微塑料

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