文献类型：期刊文献

中文题名：氨基功能化PGMA单分散微球对铜离子的吸附性能研究

英文题名：The Adsorption Behavior of Amino-modified Monodispersed PGMA Microspheres Towards Copper Ions (Ⅱ)

作者：王福春 王万坤 简启红 刘胜丽 付祥

第一作者：王福春

机构：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003;[2]贵州理工学院贵州省轻金属材料制备技术重点实验室,贵州贵阳550003

第一机构：贵州理工学院材料与能源工程学院

年份：2020

期号：4

起止页码：1-8

中文期刊名：昆明理工大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2017】；

基金：贵州省自然科学基金项目(黔科合基础[2019]1147号,黔科合基础[2019]1418号);贵州理工学院高层次人才科研启动经费项目(XJGC20190965);贵州理工学院教育教学改革项目(JGZD201804);贵州省大学生创新创业项目(S201914440157)

语种：中文

中文关键词：吸附;PGMA;乙二胺;铜离子

外文关键词：adsorption;PGMA;amine groups;copper ions(Ⅱ)

摘要：为解决重金属铜离子的水污染问题,合成了高容量乙二胺修饰的单分散聚甲基丙烯酸缩水甘油酯功能高分子微球(PGMA-NH2)吸附剂,并用于从模拟废液中吸附分离二价重金属铜离子(Cu(Ⅱ)).作者系统地研究了溶液pH、吸附时间及Cu(Ⅱ)初始浓度等影响因素对Cu(Ⅱ)吸附性能的影响.随着pH增加,Cu(Ⅱ)的吸附量也增加,pH为4.05时,Cu(Ⅱ)的吸附率接近100%,此时铜与Co(Ⅱ)、Ni(Ⅱ)和Fe(ⅡI)的选择性分离系数也达到了最大,分别为1706.8、739.8和40112.0,298 K时,PGMA-NH2对Cu(Ⅱ)的最大饱和吸附容量为1.70 mol/kg,高于文献中报道的其他吸附剂,PGMA-NH2对Cu(Ⅱ)的吸附可以用拟合Langmiur等温吸附模型描述.吸附动力学研究表明,PGMA-NH2对Cu(Ⅱ)的吸附速度非常快,10 min即可达到吸附平衡.8次吸附-解吸-活化再生循环实验表明PGMA-NH2具有优良的稳定和循环性能.
In order to solve the problem of pollution of heavy metal copper ions in wastewater,this paper reports the preparation of monodispersed adsorbents functionalized by amine groups(PGMA-NH2)and their application for adsorption of Cu(Ⅱ)ions from the simulating Cu(Ⅱ)polluted waste-water solution.The effects of pH,adsorption time,initial concentrations on Cu(Ⅱ)adsorption were investigated systematically.The Cu(Ⅱ)adsorption increased with the rise of pH.When pH was 4.05,the Cu(Ⅱ)adsorption rate was close to 100%and it showed the highest relative separation property of Cu(Ⅱ)over Co(Ⅱ),Ni(Ⅱ)and Fe(ⅡI)(1706.8、739.8 and 40112.0,respectively).The maximum adsorption capacity was 1.70 mol/kg at 298 K,which is higher than that of other adsorbents reported in the literature.The Cu(Ⅱ)adsorption by PGMA-NH2 could be described by the langmuir isotherm.The adsorption kinetics showed that the Cu(Ⅱ)adsorption by PGMA-NH2 was quite fast and the adsorption equilibrium time was about 10 min.Eight experiments of adsorption-desorption-activation and regeneration cycles showed that PGMA-NH2 has excellent stability and recycle property.