Polypropylene microplastics alter the cadmium adsorption capacity on different soil solid fractions

作     者：Xianying Ma Xinhui Zhou Mengjie Zhao Wenzhuo Deng Yanxiao Cao Junfeng Wu Jingcheng Zhou Xianying Ma;Xinhui Zhou;Mengjie Zhao;Wenzhuo Deng;Yanxiao Cao;Junfeng Wn;Jingcheng Zhou

作者机构：School of Information and Safety EngineeringZhongnan University of Economics and LawWuhan 430073China Research Center for Environment and HealthZhongnan University of Economics and LawWuhan 430073China Wuhan Regen Environmental Remediation Co.LtdWuhan 430073China* 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2022年第16卷第1期

页      面：65-76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）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：This work was Supported by the Fundamental Research Funds for the Central Universities Zhongnan University of Economics and Law(Nos.2722020JCG065 2722021BX026 and 202151413) 

主　　题：Polypropylene microplastics Cadmium Adsorption POM OMC Mineral 

摘      要：Microplastics(MPs)are widely present in a variety of environmental media and have attracted more and more attention ***,the effect of MPs on the interaction between heavy metals and soil,especially in soil solid fraction level,is not well *** this study,batch experiments were performed to investigate the adsorption characteristics of Cd in bulk soil and three soil solid fractions(*** organo matter(POM),organic-mineral compounds(OMC),and mineral)with or without polypropylene(PP)*** results showed that the addition of PP-MPs reduced the Cd adsorption capacity of the bulk soil in aqueous solution,and the effects varied with PP-MPs dose and aging ***,the responses of the three fractions to PP-MPs were *** presence of PP-MPs,the POM and OMC fractions showed negative adsorption effects,while the mineral fraction showed positive *** the bulk soil,POM and OMC fractions,the adsorption isotherm fitted to the Langmuir model better than the Freundlich model,whereas,the Freundlich isotherm model was more fitted for the mineral *** with the comprehensive analysis of the partitioning coefficients,XRD and FTIR results,it was found that OMC fraction extremely likely play a leading role in the bulk soil adsorption of Cd in this ***,the effect of MPs on adsorption capacity of the bulk soil for Cd may be determined by the proportion of POM,OMC,and mineral fractions in the soil,but further confirmation is needed.