土壤学报2025，Vol.62Issue(3)：625-639,15.DOI:10.11766/trxb202406180241
胶体在多孔介质中运移的尺寸排阻效应研究现状与展望
Developments and Prospects of Research on Size Exclusion Effects in the Transport of Colloids in Porous Media
摘要
Abstract
Colloids are among the most active components in agricultural soils and their large specific surface area and surface charge make them highly susceptible to pollutant adsorption.During the water cycle in the saturated-unsaturated zone,colloids can carry contaminants through porous media via size exclusion effects,leading to accelerated diffusion and significant impacts on groundwater quality.This paper reviews the size exclusion mechanisms of colloid transport in porous media,systematically analyses the key factors influencing the size exclusion effects of colloid transport,and summarizes the mathematical models used to describe the size exclusion effect of colloid transport.Finally,it explores high-precision tracer methods for characterizing colloid transport behavior and discusses strategies for constructing mathematical models to depict size exclusion effects in colloid transport.This study holds significant implications for deepening the understanding of environmental effects associated with colloid transport in the saturated-unsaturated zone water cycle and guiding the prevention and control of groundwater pollution in farmlands.关键词
纳米颗粒/胶体运移/孔隙排阻/体积排阻/运移模拟Key words
Nanoparticles/Colloidal transport/Pore exclusion/Volume exclusion/Transport simulation分类
资源环境引用本文复制引用
王常茜,沈重阳,廖人宽..胶体在多孔介质中运移的尺寸排阻效应研究现状与展望[J].土壤学报,2025,62(3):625-639,15.基金项目
国家自然科学基金项目(42477317)、新疆维吾尔自治区重点研发项目(2023B02002-1)和中央高校基本科研业务费专项资金项目(15053343)资助 Supported by the National Natural Science Foundation of China(No.42477317),Key R&D Program Projects in Xinjiang(No.2023B02002-1),Chinese Universities Scientific Fund(No.15053343) （42477317）
