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模拟异构聚合驱动的浮性微塑料沉积:与多个粘土颗粒的相互作用

Yi Wang¹, Zipeng Gu¹, Xingwei Chen¹

¹Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University, Fuzhou 350117, China; School of Geographical Sciences, School of Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350117, China.

The Science of the total environment

|December 22, 2024

概括

这项研究模拟了浮性微塑料 (BMP) 与多个粘土颗粒的聚合. 忽视这种相互作用低估了BMP沉积,这对于理解水中环境中的微塑料迁移至关重要.

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
海洋学海洋学海洋学

背景情况:

微塑料 (MP) 的生态风险评估取决于了解它们的环境迁移.
异构聚合显著影响MP垂直迁移,通常是数学模型.
由于简化了聚合假设,现有的模型无法充分模拟浮性微塑料 (BMP) 迁移.

研究的目的:

开发一种新的数学模型,用多个粘土颗粒对一个BMP进行异质聚合.
通过敏感性分析和模拟,确定影响BMP沉积的关键因素.
提高水生系统中MP迁移预测的准确性.

主要方法:

开发了一个基于人口平衡方程的模型,用于一个BMP,具有多个粘土粒子异质聚合.
进行参数灵敏度分析以确定影响BMP沉积的因素.
执行场景模拟,以评估不同环境条件下的模型性能.

主要成果:

忽视多颗粒相互作用低估了BMP沉度,特别是在高粘土和盐度环境中.
BMP 沉积主要由异构聚合率控制,这种异构聚合率对环境条件敏感.
与环境因素相比,粒子特性对整体沉过程的影响较小.

结论:

开发的模型提供了更准确的BMP迁移动态的表示.
未来的数学模型必须包含BMP-多重粘土粒子相互作用,以进行可靠的MP环境风险评估.
了解这些相互作用对于预测水生生态系统中的微塑料命运和运输至关重要.

关键词:

漂浮式微塑料是一种漂浮的微塑料.粘土颗粒是一种粘土颗粒.异性聚合是一种异性聚合.数学模型是一个数学模型.

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