不溶性淀粉黄原酸酯吸附废水中Cu^(2+)机理研究  

The Study on the Adsorption Mechanisn of Insoluble Xanthates for the Removal of Copper Ions From Wastewater

作　　者：韦晓燕[1] 刘百山 欧阳玉霞[1] 孙萍[3] 谭军[3] 

机构地区：[1]嘉兴学院南湖学院,浙江嘉兴314001 [2]嘉兴艾尔瑞环境科技有限公司,浙江嘉兴314006 [3]嘉兴学院生物与化学工程学院,浙江嘉兴314001

出　　处：《嘉兴学院学报》2015年第6期76-82,共7页Journal of Jiaxing University

基　　金：嘉兴市科技计划项目(2014AY21008);嘉兴学院南湖学院2013年科研重点课题(N41472001-3);嘉兴市南湖区重点科技计划项目(2014QG20);浙江省公益性技术应用研究计划项目(2012C31028)

摘　　要：以玉米淀粉为原料合成了不溶性淀粉黄原酸酯(ISX),对不溶性淀粉黄原酸酯进行了红外光谱、扫描电镜和XRD表征,重点研究了ISX去除Cu2+机理及吸附动力学、吸附平衡等温式和吸附热力学,结果表明,ISX吸附Cu2+为离子交换反应,其吸附速率快,符合拟二级动力学,属于Freundlich吸附,吸附过程为吸热、熵增、自发的反应过程.Insoluble starch xanthate （ISX）was synthesized by using corn starch as raw material,and characterized by FTIR,SEM and XRD.Furthermore,the adsorption mechanism,including adsorption kinetics, equilibrium and thermodynamics of copper ions from aqueous solutions were all investigated.The results indicated the removal mechanism of ISX for Cu（II）was ions exchange,the adsorption kinetics were favorably described by the pseudo - second - order kinetic model and the adsorption isotherms followed well with the Freundlich isotherm model,the thermodynamic study indicated that the adsorption was a spontaneous and endo-thermic process.

关 键 词：不溶性淀粉黄原酸酯 吸附机理 等温吸附 吸附动力学 吸附热力学 

分 类 号：X703.5[环境科学与工程—环境工程]