一种膨润土的表征及其对重金属离子吸附研究  

Characterization of A Bentonite and Its Adsorption of Heavy Metal Ions

作　　者：袁宁辉 余丽梅 李春彤 陶李明[1,2] 李佳蔚 刘鹏 YUAN Ning-hui;YU Li-mei;LI Chun-tong;TAO Li-ming;LI Jia-wei;LIU Peng(School of Chemistry and Enviromental Science,Xiangnan University,Hunan Chenzhou 423000;Hunan Provincial Key Laboratory of xiangnan Rare-precious Metals Compounds and Applications,Hunan Chenzhou 423000;School of Public Pharmacy,Xiangnan University,Hunan Chenzhou 423000,China)

机构地区：[1]湘南学院化学与环境科学学院,湖南郴州423000 [2]湖南稀贵金属化合物及其应用湖南省重点实验室,湖南郴州423000 [3]湘南学院药学院,湖南郴州423000

出　　处：《广州化工》2023年第2期92-94,129,共4页GuangZhou Chemical Industry

基　　金：湖南省自然科学基金项目(No:2021JJ30636);郴州市科技计划项目(No:ZDYF201910);湘南学院教改研究项目(No:2022XJ71、No:2022XJ72);湘南学院开放性实验项目(No:[2022]33号27);湘南学院大学生研究创新计划项目(No:[2020]63号25)。

摘　　要：以原矿膨润土为原料,对其结构进行表征和分析。然后从单因素条件分析膨润土对Cu^(2+)、Cd^(2+)、Pb^(2+)的吸附效果。结果表明:在相同条件下,膨润土加入量为0.30 g、温度为25℃时,Cu^(2+)初始浓度为200 mg/L,溶液pH值为5.0,其最大吸附率为99.92%;Cd^(2+)初始浓度为150 mg/L,溶液pH值为6.0,其最大吸附率为99.84%;Pb^(2+)初始浓度为50 mg/L,溶液pH值为3.5,其最大吸附率为99.12%。竞争吸附中膨润土对Cd^(2+)吸附效果最佳。此研究对处理含重金属离子的废水具有较好的潜在价值。The original ore bentonite was used as raw material to characterize and analyze its structure.Then the adsorption effect of bentonite on Cu^(2+),Cd^(2+) and Pb^(2+) were analyzed from single factor conditions.The results showed that when the addition amount of bentonite was 0.30 g and the temperature was 25℃under the same conditions,the initial concentration of Cu^(2+) was 200 mg/L,pH value of the solution was 5.0,and the maximum adsorption rate was 99.92%,for the initial concentration of Cd^(2+) was 150 mg/L,pH value of the solution was 6.0,and the maximum adsorption rate was 99.84%,for the initial concentration of Pb^(2+) was 50 mg/L,the pH value of the solution was 3.5,and the maximum adsorption rate was 99.12%.In the competitive adsorption,bentonite had the best adsorption effect on Cd^(2+).This research had great potential value for the treatment of wastewater containing heavy metal ions.

关 键 词：膨润土 表征 重金属离子 吸附 

分 类 号：TQ09[化学工程]