在不和多孔介质中的PFOS运输过程中,空气-水和矿泉水接口之间的静电和化学相互作用
Jacopo Cogorno1,2, Navid Ahmadi3, Muhammad Muniruzzaman4,5
1Department of Environmental and Resource Engineering, Technical University of Denmark, Miljo̷vej, Building 115, 2800 Kgs. Lyngby, Denmark.
Environmental science & technology
|April 10, 2025
概括
perfluorooctanesulfonate (PFOS) 的迁移是复杂的,受到空气-水和矿物水相互作用的影响. 了解这些过程是预测地下水中的污染物运输的关键.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 水文地质学 水文地质学
背景情况:
- perfluorooctanesulfonate (PFOS) 是一种持续存在的环境污染物.
- 从瓦多带来源到地下水中的PFOS迁移是复杂的.
- 接口保留过程显著影响PFOS运输动态.
研究的目的:
- 研究空气-水和矿物水界面保留对PFOS运输的影响.
- 评估吸附量和反动态作为离子强度的函数.
- 区分空气-水和矿物水界面吸附对PFOS阻滞的贡献.
主要方法:
- 在不和石英和石涂层石英砂中进行了流通实验.
- 平衡的多孔介质,背景电解质度各不相同.
- 使用基于过程的热力学框架的反应式运输模拟.
主要成果:
- 多过程保留导致非理想的PFOS运输.
- 羽毛延迟和质量转移取决于保留过程的相互作用.
- 由溶液对子驱动的静电相互作用至关重要.
结论:
- PFOS的运输由相互依存的空气-水和矿物水吸附过程来控制.
- 水化学,特别是离子强度,调节了界面保留.
- 准确的反应式运输模型必须包含这些合的接口过程.
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