在典型的海湾地区模拟微塑料-抗生素化合物污染物的运输的统计物理方法
Liming Xing1, Haifei Liu1, Diogo Bolster2
1School of Environment, Beijing Normal University, Beijing, 100875, China.
Environmental pollution (Barking, Essex : 1987)
|January 19, 2024
概括
来自微塑料和抗生素的复合污染物是一个日益严重的环境问题. 这项研究模拟了它们在沿海地区的运输,显示吸附降低了抗生素水平,但随着时间的推移扩大了污染区.
科学领域:
- 环境科学 环境科学
- 环境化学环境化学
- 计算流体动力学的流体动力学.
背景情况:
- 微塑料和抗生素是普遍存在的沿海污染物.
- 微塑料-抗生素吸附形成的复合污染物是一个重大问题.
- 对微塑料运输和沿海地区复合污染物影响的理解有限.
研究的目的:
- 开发和验证一个模拟微塑料-抗生素化合物污染物运输的混合模型.
- 研究聚乙烯 (PE) -抗生素污染物的环境命运和迁移模式.
- 评估吸附对抗生素度和污染区扩张的影响.
主要方法:
- 使用了统计物理框架,结合了格子博尔茨曼方法 (LBM) 和时间马尔科夫方法 (TMM).
- 开发了用于波电流,抗生素运输和粒子跟踪的合LBM模型.
- 整合了微塑料运输的TMM,并为化合物污染物创建了最终的LBM-TMM混合模型.
主要成果:
- 抗生素在PE微塑料上的吸附降低了水中的抗生素度.
- 随着时间的推移,PE-抗生素化合物污染物表现出增强的迁移.
- 在莱州湾的模拟显示,污染区的宽度在44天内从234.2米增加到689.0米.
结论:
- 开发的LBM-TMM混合模型有效地模拟了沿海地区的复合污染物运输.
- 微塑料与抗生素的相互作用改变了污染物的行为,扩大了污染区.
- 调查结果强调了对微塑料和抗生素污染的综合管理战略的需要.
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