相关实验视频

Updated: Jun 6, 2025

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture

Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture

Published on: May 10, 2013

可降解和不可降解的微塑料对SPNEDPR-AGS系统的影响:泥特性,营养转化,关键酶和微生物社区

Dongyue Li¹, Jiarui Li¹, Dongbo Liang²

¹National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing 100124, China.

Bioresource technology

|December 2, 2024

概括

微塑料 (MP) 损害有氧颗粒污泥 (AGS) 系统. 聚乙烯化物 (PVC-MPs) 和聚乳酸 (PLA-MPs) 都会破坏AGS的性能和去除,突出了废水处理中的生物降解MPs带来的风险.

科学领域:

环境科学环境科学
微生物学微生物学
废水处理工程废水处理工程

背景情况:

微塑料 (MP) 是新兴的环境污染物.
对于 MPs 对有氧颗粒性污泥 (AGS) 系统的影响,对于废水处理至关重要,仍然不太了解.
非生物降解和生物降解的MP都可能对这些系统构成风险.

研究的目的:

研究聚乙烯微塑料 (PVC-MP) 和聚乳酸微塑料 (PLA-MP) 对AGS系统性能的影响.
阐明这些MPs影响AGS结构,微生物群落和去除的机制.
评估废水处理中两种类型的MP所带来的环境风险.

主要方法:

对AGS系统对PVC-MPs和PLA-MPs的实验暴露.
评估AGS性能参数 (例如结构,去除效率).
微生物社区分析,代谢途径分析和分子对接.

主要成果:

无论是PVC-MP还是PLA-MP,都显著降低了AGS系统的性能.
PVC-MPs破坏了AGS结构,而PLA-MPs由于乳酸代谢产物导致细菌扩张.
的去除被抑制,关键的微生物 (Candidatus Competibacter,Nitrosomonas) 被抑制的MP类型.

结论:

微塑料,包括像PLA-MP这样的可生物降解类型,对废水处理厂的稳定运行构成重大风险.
这些机制涉及AGS结构的破坏,微生物群落的转移,以及基本代谢过程的抑制.
需要进一步的研究和缓解策略,以解决MP在水生系统中的环境危害.

关键词:

有氧颗粒污泥的有氧颗粒污泥高通量测序的高通量测序微塑料是一种微塑料.分子对接是分子对接.泥积聚的积聚物

更多相关视频

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies

Forming Micro-and Nano-Plastics from Agricultural Plastic Films for Employment in Fundamental Research Studies

Published on: July 27, 2022

相关概念视频

Environmental Applications of Microorganisms

Environmental Applications of Microorganisms

Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.