解读anammox对聚乙烯四甲酸微塑性暴露的反应特征和潜在机制
Wenli Fan1, Boya Wei1, Yuxiao Zhu1
1School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China.
Journal of hazardous materials
|October 8, 2024
概括
在废水中长期暴露于聚乙烯二甲 (PET) 微塑料 (MPs) 损害了anammox颗粒污泥的性能. 然而,随着时间的推移,污泥活动会恢复,这表明除过程中的弹性.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 废水处理 废水处理
背景情况:
- 微塑料 (MP) 是废水中普遍存在的环境污染物.
- 亚纳莫克斯颗粒污泥对于废水处理中的去除至关重要.
研究的目的:
- 调查聚乙烯二甲 (PET) MPs对anammox颗粒污泥的短期和长期影响.
- 分析阿纳莫克斯污泥对PET-MP暴露的反应机制.
主要方法:
- 在不同时间段内,阿纳莫克斯颗粒污泥暴露于不同度的PET-MPs.
- 监测去除性能和总去除效率 (TNRE).
- 微生物社区结构和代谢交换的分析.
主要成果:
- 短期PET-MP暴露引起了应激反应,但没有显著影响去除.
- 长期暴露抑制了去除,TNRE在200mg/L PET-MPs下降了28.7%.
- 三个月后,Anammox活性恢复到初始TNRE的约87%.
结论:
- 长期暴露于PET-MP会对anammox污泥的除效率产生负面影响.
- 微生物群落的转变,降低了体细菌的生长,并阻碍了交叉养途径是关键的反应机制.
- 亚纳莫克斯污泥表现出回收潜力,为废水处理对微塑料污染的抵御能力提供了洞察力.
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