Mechanisms of heating-electrokinetic co-driven perfluorooctanoic acid(PFOA)adsorption on zeolite  

作　　者：Yongping Shan Yuzhou Yin Jian Wei Dong Ma Mingxiu Zhan Yongguang Yin Liuqing Yang Wentao Jiao Lukas Y.Wick 

机构地区：[1]Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China [2]State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China [3]College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,China [4]UFZ-Helmholtz Centre for Environmental Research,Department of Environmental Microbiology,04318,Leipzig,Germany

出　　处：《Journal of Environmental Sciences》2024年第12期264-271,共8页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.42277011);the fellowship of the China Postdoctoral Science Foundation(Nos.2023T160667 and 2022M713300)。

摘　　要：Slow release of emerging contaminants limits their accessibility from soil to pore water,constraining the treatment efficiency of physio-chemical treatment sites.DC fields mobilize organic contaminants and influence their interactions with geo-matrices such as zeolites.Poor knowledge,however,exists on the joint application of heating and electrokinetic approaches on perfluorooctanoic acid(PFOA)transport in porous media.Here,we investigated electrokinetic PFOA transport in zeolite-filled percolation columns at varying temperatures.Variations of pseudo-second-order kinetic constants(kPSO)were correlated to the liquid viscosity variations(η)and elctroosmotic flow velocities(vEOF).Applying DC fields and elevated temperature significantly(>37%)decreased PFOA sorption to zeolite.A good correlation betweenη,vEOF,and kPSO was found and used to develop an approach interlinking the three parameters to predict the joint effects of DC fields and temperature on PFOA sorption kinetics.These findings may give rise to future applications for better tailoring PFOA transport in environmental biotechnology.

关 键 词：PFOA Emerging contaminant ELECTROKINETIC Temperature Sorption kinetics 

分 类 号：X592[环境科学与工程—环境工程]