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垃圾填埋场作为微塑料的来源:守卫者是否保护自己?

Sreevidya Anilbose Krishnendu¹, George Kuttiparichel Varghese¹

¹Department of Civil Engineering, NIT Calicut, India.

Journal of environmental management

|July 12, 2025

概括

在垃圾填埋场中的高密度聚乙烯 (HDPE) 地质膜层会将微塑料释放到液中. 较高的温度增加了微塑料的产生,表明需要更环保的垃圾填埋替代品.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
聚合物科学聚合物科学

背景情况:

微塑料污染是一个日益严重的环境问题,垃圾填埋场是通过液释放微塑料的重要来源.
合成面,如高密度聚乙烯 (HDPE) 地膜,对垃圾填埋场中的微塑料污染的贡献尚不清楚.

研究的目的:

调查HDPE地质膜层在多大程度上有助于垃圾填埋场液中的微塑料度.
评估加速老化和温度对HDPE内产生的微塑料产生的影响.

主要方法:

1.5毫米厚的HDPE地质膜在23°C和50°C的合成液中老化了四个月.
每个月测试物理,机械和化学性能,以监测衰老.
使用电子显微镜检查了表面形态.
每月用立体显微镜和光谱分析分析出水液的微塑料.

主要成果:

每平方米的HDPE地缘膜层释放的微塑料颗粒在475到1689之间.
微塑料的产生在50°C明显高于23°C.
大多数产生的微塑料颗粒都小于20微米.

结论:

HDPE地质膜层是垃圾填埋场液中微塑料污染的重要来源.
高温加剧了这些内中微塑料的释放.
开发具有减少环境影响的替代垃圾填埋料材料至关重要.

关键词:

加快衰老的加速衰老.地质膜层是地球膜层.这是一种HDPE.垃圾填埋场的洗液是如何处理的微塑料是一种微塑料.

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