中华麦饭石对重金属离子的吸附作用  

Adsorption of Heavy Metal Ions by Chinese Medical Stone

作　　者：任娟 刘玖伟 冯雷 Ren Juan;Liu Jiuwei;Feng Lei(Yoogal Health Science ＆ Technology Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]优高雅健康科技〈深圳〉有限公司,广东深圳518000

出　　处：《净水技术》2018年第11期88-94,共7页Water Purification Technology

摘　　要：以产于内蒙古通辽市奈曼旗的中华麦饭石为吸附剂,研究麦饭石对重金属离子Pb^(2+)、As^(3+)、Cr^(3+)、Cd^(2+)、Hg^(2+)的吸附作用。结果表明,中华麦饭石对重金属离子的吸附动力学符合准二级动力学方程,吸附等温线符合Langmuir方程。中华麦饭石对重金属离子Pb^(2+)、As^(3+)、Cr^(3+)、Cd^(2+)、Hg^(2+)的吸附容量分别为0.119 8、0.133 1、0.105 4、0.069 8、0.057 5 mg/g。中华麦饭石对重金属离子的吸附机理主要是物理吸附与离子交换。Adsorption of heavy metal ions Pb^2＋, As^3＋, Cr^3＋, Cd^2＋ and Hg^2＋ by Chinese medieal stone nfined in Naiman Banner, Tongliao, Inner Mongolia was studied. The results showed that adsorption kinetics of heavy metal ions by Chinese medical stone accorded with quasi-second-order kinetic equation and adsorption isotherm accorded with Langmuir equation. Adsorption eapaeily of heavy metal ions Pb^2＋, As^3＋, Cr^3＋, Cd^2＋ and Hg^2＋ by Chinese medical stone were 0. 119 8, 0. 133 1, 0. 105 4, 0. 069 8 mg/g and 0. 057 5 mg/g, respectively. Besides, adsorption meehanism of heavy metal ions by Chinese medical stone was mainly physical adsorption and ion exchange.

关 键 词：中华麦饭石 重金属离子 吸附 

分 类 号：TV992[水利工程—水利水电工程]