对聚乙烯四甲酸微塑料急性暴露的研究,对anammox颗粒污泥的性能进行研究
Yuliang Zhao1, Haijuan Qin1, Yuhua Lyu1
1School of Transportation Engineering, Dalian Jiaotong University, Dalian, 116028, China.
Anaerobe
|July 9, 2025
概括
微塑料 (MP) 可以通过增加脱率和关键酶活性来增强无氧氨氧化 (anammox) 过程. 较大的聚乙烯二甲 (PET) 微塑料颗粒对anammox治疗效率产生了更大的积极影响.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 污水处理 污水处理 污水处理
背景情况:
- 无氧氨氧化 (anammox) 是一种高效的生物脱过程.
- 对微塑料 (MP) 对anammox工艺的影响的研究是有限的.
研究的目的:
- 调查短时间暴露于不同尺寸的聚乙烯四甲酸 (PET) 微塑料对anammox颗粒污泥 (AnGS) 的影响.
- 为了阐明厌氧氨氧化细菌 (AnAOB) 对PET-MPs的反应中的代谢机制.
主要方法:
- 对12小时内暴露于不同颗粒大小的PET-MP的anammox反应器.
- 测量脱率和氨酸脱酶 (HDH) 酶活性.
- 细胞外聚合物质 (EPS) 的分析和代谢学分析.
主要成果:
- 对PET-MPs的急性暴露促进了反应器脱率和增加了HDH酶活性.
- 较大的PET-MP颗粒大小对处理效率和HDH活性表现出更强的促进作用.
- PET-MPs刺激了ANAOB分泌更多的EPS,改变了氨基酸代谢和ANAOB生物合成.
结论:
- 这项研究提供了关于anammox过程对微塑料暴露的反应机制的见解.
- 这些发现可能有助于了解微塑料在废水处理技术中的潜在应用.
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