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.
作者
任娟
刘玖伟
冯雷
Ren Juan;Liu Jiuwei;Feng Lei(Yoogal Health Science ＆ Technology Co.,Ltd.,Shenzhen 518000,China)
出处
《净水技术》
CAS
2018年第11期88-94,共7页
Water Purification Technology
关键词
中华麦饭石
重金属离子
吸附
Chinese medical stone（CMS）
heavy metalion
adsorption
作者简介
任娟（1990-），女，本科，研究方向为麦饭石的研究与开发，E—mail：1065075146@qq．com。
