在批量实验中,原油碳化合物对聚乙烯微塑料的吸附行为
Farah Ali Ahmad1, Darine A Salam1
1Department of Civil and Environmental Engineering, Maroun Semaan Faculty of Engineering and Architecture, American University of Beirut, P.O. Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon.
Marine pollution bulletin
|March 20, 2025
概括
微塑料显著影响水中的原油命运. 聚乙烯微塑料吸附基和多环芳 (PAH),影响碳化合物的分离和环境持久性.
科学领域:
- 环境化学环境化学
- 聚合物科学 聚合物科学
- 海洋污染 海洋污染
背景情况:
- 微塑料是普遍存在的环境污染物.
- 原油泄漏带来了重大的生态风险.
- 微塑料和漏油之间的相互作用需要进一步调查.
研究的目的:
- 研究聚乙烯微塑料对原油成分的吸附行为.
- 确定微塑料对碳化合物的环境命运的影响.
- 量化微塑料对和PAHs的吸附能力.
主要方法:
- 使用聚乙烯微塑料 (300-600μm) 的批量吸附实验.
- 在液液提取后,使用气相色谱与质谱相结合对原油成分进行分析.
- 动力 (伪第一阶,伪第二阶,埃洛维奇,粒子内部扩散) 和等温 (朗穆尔,弗洛因德利希,特姆金,杜比宁-拉杜什凯维奇) 模型的应用.
主要成果:
- 吸附动力学主要遵循埃洛维奇和伪二阶模型,表明化学吸附.
- 碳化合物对聚乙烯的吸附表现出不同的行为,符合兰木尔,弗洛因利希,特姆金或杜比宁-拉杜什基维奇模型,具体取决于具体的化合物.
- 阿尔干的最大吸附能力为263.12 mg/g,PAH的最大吸附能力为101.57 mg/g,表面吸附量为5.75 mg/m2.
结论:
- 聚乙烯微塑料在改变原油碳化合物的环境命运方面发挥着重要作用.
- 微塑料会影响水生系统中和PAH的分离和相互作用.
- 了解这些相互作用对于评估混合微塑料和石油污染对生态的影响至关重要.
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