RETRACTED: Kinetic and isothermal studies of lead ion adsorption onto bentonite (Retracted article. See vol. 47, pg. 468, 2010)

被引：49

作者：

Zhu, Shujing ^{[1
]}

Hou, Haobo ^{[1
]}

Xue, Yongjie ^{[1
]}

机构：

[1] Wuhan Univ, Wuhan, Peoples R China

来源：

APPLIED CLAY SCIENCE | 2008年 / 40卷 / 1-4期

关键词：

bentonite; lead; isothermal; kinetic; adsorption;

D O I：

10.1016/j.clay.2007.08.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The use of bentonite for the removal of Pb(II) from aqueous solutions for different contact times, pH of suspension, and initial concentration of Pb and particle sizes of absorbent was investigated. Batch adsorption kinetic experiments revealed that the adsorption of Pb(II) onto bentonite involved fast and slow processes. The adsorption mechanisms in the lead/bentonite system followed pseudo-second-order kinetics with a significant contribution of film diffusion. The adsorption isotherms were described by means of the Langmuir and Freundlich isotherms and the Langmuir model represented the adsorption process better than the Freundlich model. The maximum adsorption capacity of Pb(II) onto natural bentonite was 78.82 mg g(-1). (C) 2007 Elsevier B.V. All fights reserved.

引用

页码：171 / 178

页数：8

共 30 条

[1] Palygorskite as a feasible amendment to stabilize heavy metal polluted soils [J].