微塑料对生物保留系统脱的影响和机制
Zhaoyang You1, Angrui Jiang1, Yuxin Yang1
1College of Urban Construction, Nanjing Tech University, Nanjing, 210000, China.
Journal of hazardous materials
|July 1, 2025
概括
面膜中的微塑料 (MPs) 通过减少的去除和抑制关键细菌来损害生物保留系统. 面膜过层MP显示对系统效率产生最显著的负面影响.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 水处理工程水处理工程
背景情况:
- 微塑料 (MP) 通过雨水排水而积聚在生物保留系统中.
- 对于MPs对这些系统中脱细菌的影响尚不清楚.
研究的目的:
- 调查来自不同面膜层的MPs对生物保留系统脱的影响.
- 评估MP诱导的去除,酶活性和微生物群落的变化.
主要方法:
- 生物防护系统暴露于来自口罩过器,外层和内层的MP.
- 测量物种 (NH4+-N,NO3--N,总) 的去除效率.
- 测定脱酶,酶和尿酶酶的活性.
- 对脱细菌的丰富性 (例如,Boteobacteria,Bacteroidota,Denitratisoma) 和细胞外聚合物质 (EPS) 的特性进行分析.
主要成果:
- MP积累显著减少了NH4+-N,NO3--N和总去除.
- 酶活性 (脱酶,酶,尿酶) 被MPs抑制.
- 关键的非化细菌的丰富性减少.
- 微生物群落通过改变EPS特性 (粘度,疏水性) 来适应.
- 过层MPs具有最强的抑制作用,其次是外层和内层MPs.
结论:
- 国会议员损害了生物保留系统的脱效率和微生物健康.
- 微生物通过EPS调制进行适应,以应对MP的压力.
- 不同的口罩层对生物保留系统构成不同的生态风险.
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