纳米过系统对日内瓦地下水中微塑料污染的影响 (瑞士)
Angel Negrete Velasco1, Alicia Ellero2, Stéphan Ramseier Gentile2
1Department F.-A. Forel for Environmental and Aquatic Sciences, Faculty of Science, Group of Environmental Physical Chemistry, University of Geneva, 66, Boulevard Carl-Vogt, CH-1211, Geneva 4, Switzerland. angel.negretevelasco@unige.ch.
Environmental science and pollution research international
|January 22, 2024
概括
地下水含有微塑料 (MPs),纳米过增加了处理过的水中的MP度. 这项研究揭示了地下水中的MP,并强调了纳米过.
科学领域:
- 环境科学 环境科学
- 水的质量 水的质量
- 分析化学 分析化学
背景情况:
- 微塑料 (MP) 污染在各种水体中普遍存在.
- 地下水是重要的资源,但其PM污染情况尚不清楚.
- 纳米过是一种被认为是净化水的有效技术.
研究的目的:
- 为了调查地下水中的微塑料污染.
- 评估纳米过在去除微塑料中的有效性.
- 描述在地下水和纳米过水中发现的微塑料的类型和大小.
主要方法:
- 分析来自泥沙砂水层的大水量及其纳米过输出.
- 使用富里埃变换红外 (FTIR) 显微镜对微塑料 (>20微米) 的量化和表征.
- 确定微塑料的尺寸分布和聚合物类型.
主要成果:
- 地下水含有8±7MPs/m3,在纳米过水中增加到36±11MPs/m3.
- 微塑料主要属于较小的尺寸类 (20-50微米和50-100微米).
- 确定了包括PP,PVC,EVA,PE,PET和PMMA在内的各种聚合物;纤维度在纳米过之前和之后保持相似.
结论:
- 地下水具有低水平的微塑料污染.
- 纳米过,在去除颗粒的同时,可以将微塑料引入或缩到经过处理的水中.
- 需要进一步的研究,以了解MP在地下水系统和水处理过程中的运输和清除.
相关概念视频
Microbial Bioremediation of Uranium
Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella, which use...
Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.


