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从三层面罩中微塑料的生物转化通过化-脱化联盟

Amairani Flores-Díaz¹, Felipe Alatriste-Mondragón¹, Bruce Rittmann²

¹Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Ciencias Ambientales, Camino a la Presa San José 2055, Lomas 4a Sección, C.P. 78216, San Luis Potosí, Mexico.

Journal of hazardous materials

|October 18, 2024

概括

微生物联盟可以在废水中生物转化面膜中的微塑料 (MP). 这些微生物改变了聚烯MP的化学结构,为塑料污染提供了潜在的解决方案.

科学领域:

环境微生物学环境微生物学
聚合物科学聚合物科学
污水处理污水处理污水处理

背景情况:

随着COVID-19大流行,单次使用面罩的微塑料 (MP) 污染量增加.
污水处理厂 (WWTP) 没有设备有效地去除MP.
聚烯 (PP) 是面膜中常见的材料,有助于MP污染.

研究的目的:

为了评估三层面罩不同层的MP生物转化.
调查化-脱化微生物联盟在MP降解中的作用.
评估微生物处理后PP-MP物理化学性质的变化.

主要方法:

使用了化-脱微生物联盟和合成城市废水.
从外层,中层和内层的 PP-MP 暴露在微生物处理中42天.
分析了MP结构的变化,使用碳和基指数,扫描电子显微镜 (SEM) 和热分析 (晶度,蒸发和聚变温度).
监测微生物联盟的去除效率.

主要成果:

微生物处理显著改变了所有三层PP-MP的表面和化学结构.
生物测试显示,PP-MP中的碳基和基指数增加,表明氧化.
外层表现出最显著的生物转化,由SEM和热性质变化证实.
无生物对照没有显示MP属性的显著变化.
微生物联盟实现了废水中99%的总去除.
在联盟中,诸如Cephaloticoccus和Pseudomonas等基因表现出MP生物转化能力.

结论:

化-脱化微生物联盟可以有效地生物转化来自聚烯面膜的微塑料.
微生物的作用改变了PP-MP的物理化学特性,外层受到影响最大.
这项研究强调了特定微生物群落在减轻废水中微塑料污染方面的潜力.
这些发现表明,有希望的生物方法可以解决WWTP中的MP污染问题.

关键词:

生物转化生物转化微塑料是一种微塑料.化-脱化微生物聚烯聚烯的使用方法三层面罩是三层面罩.

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