Screening ionic liquids for efficiently extracting perfluoroalkyl chemicals (PFACs) from wastewater

作     者：Kaihang Zhang David Kujawski Chris Spurrell Bing Wang John CCrittenden Kaihang Zhang;David Kujawski;Chris Spurrell;Bing Wang;John C.Crittenden

作者机构：Brook Byers Institute of Sustainable Systems and School of Civil and Environmental EngineeringGeorgia Institute of TechnologyAtlantaGA 30332USA Refinery Water Engineering and AssociatesHydrocarbon Processing Water and Waste TechnologyInc.HoustonTX 77042USA Chevron USAVancouverWA 98664USA School of Municipal and Environmental EngineeringShenyang Jianzhu UniversityShenyang 110000China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2023年第127卷第5期

页      面：866-874页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 0703[理学-化学] 

基　　金：support from the Brook Byers Institute for Sustainable Systems Hightower Chair and Georgia Research Alliance at the Georgia Institute of Technology 

主　　题：Conductor-like screening model for real solvents(COSMO-RS) Ionic liquids Perfluorooctanoic acid(PFOA) Perfluorooctane sulfonic acid(PFOS) Liquid-liquid extraction 

摘      要：Liquid-liquid extraction(LLE)using ionic liquids(ILs)-based methods to remove perfluoroalkyl chemicals(PFACs),such as perfluorooctanoic acid(PFOA)and perfluorooctane sulfonic acid(PFOS),from wastewater,is an important ***,the lack of physicochemical and LLE data limits the selection of the most suitable ILs for the extraction of *** this work,1763 ILs for PFACs extraction from water were systematically screened using COSMOtherm to estimate the infinite dilution activity coefficient(lnγ^(∞))of PFOA and PFOS in water and *** evaluate the accuracy of COSMOtherm,8 ILs with various lnγ^(∞)values were selected,and their extraction efficiency(E)and distribution coefficient(D_(exp))were measured *** results showed that the predicted lnγ^(∞)decreased as the increase of experimental extraction efficiency of PFOA or PFOS,while the tendency of predicted distribution coefficient(D_(pre))was consistent with the experimental(D_(exp))*** work provides an efficient basis for selecting ILs for the extraction of PFACs from wastewater.