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在水溶液中的紫外线老化聚乙烯二甲和聚烯微塑料上Cu (II) 的吸附行为

Vijaykumar Sekar¹, Baranidharan Sundaram²

¹Department of Civil Engineering, National Institute of Technology Andhra Pradesh, Tadepalligudem, India.

Environmental science and pollution research international

|January 20, 2025

概括

紫外线老化微塑料 (MPs) 的重金属 (HM) 吸附率明显高于原始MPs. 这项研究强调了老年国会议员通过增加污染物吸收对水生生态系统构成的风险增加.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

微塑料 (MP) 是普遍存在的环境污染物,它们分解成更小的颗粒.
国会议员可以充当其他污染物的载体,例如重金属 (HMs),对水生生态系统构成风险.
环境因素 (如紫外线衰老) 对MP-HM相互作用的影响尚不清楚.

研究的目的:

调查使用铜离子 (Cu2+) 的新和经过紫外线老化的聚乙烯二甲 (PET) 和聚烯 (PP) 微塑料的吸附行为.
为了比较老化和初始微塑料的重金属吸附能力.
了解紫外线老化的作用,改变微塑料表面对污染物相互作用的作用.

主要方法:

使用的原始和经过紫外线老化的PET和PP微塑料.
研究的相互作用与铜 (Cu2+) 溶液.
采用了表面分析技术,包括里埃变换红外光谱 (FTIR),扫描电子显微镜 (SEM),X射线衍射 (XRD) 和原子吸收光谱 (AAS).

主要成果:

与处女MP相比,紫外线老化的MP显示了对Cu2+的显著更高的吸附能力.
紫外线老化MP的孔积增加和氧化降解有助于增强重金属吸附.
紫外线老化PETMP显示吸附能力增加了20% (0.63.54 mg/g),而紫外线老化PPMP显示吸附能力增加了15% (1.514.25 mg/g).

结论:

紫外线老化大大提高了普通微塑料 (PET和PP) 的重金属吸附能力.
陈旧的微塑料由于其增加了污染物运输潜力,造成了更大的环境风险.
进一步的研究对于评估老化微塑料的长期环境影响及其污染物相互作用至关重要.

关键词:

吸附方式吸附方式吸附方式这是一种重金属,重金属.互动互动互动互动微塑料是一种微塑料.紫外线老化的紫外线.水水水水水,这是一个很好的方法.

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