Kinetic and thermodynamic study of cd~(2+) adsorption onto rubber tree (hevea brasiliensis) leaf powder

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外文摘要：A batch adsorption system was applied to study the adsorption of Cd~(2+) ions from aqueous solution by Hevea Brasiliensis, HB leaf powder. The adsorption capacities and rates of Cd~(2+) ions onto HB leaf powder were evaluated. Langmuir and Freundlich models were applied to describe the isotherms and isotherms constants. Equilibrium data agreed well with the Freundlich model. The kinetic experimental data correlated well with the pseudo-second-order kinetic model, indicating that the chemical sorption was the rate-limiting step.

外文关键词：

hevea brasiliensis (HB)Cd~(2+)chemical sorption

作者：

M.A.K.M. Hanafiah、S. Shafiei、M.K. Harun、M.Z.A. Yahya

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作者单位：

Faculty of Applied Sciences, Universiti Teknologi MARA, Cawangan Pahang, 26400, Bandar Jengka, Pahang, Malaysia

会议名称：

International Conference on Functional Materials and Devices 2005(ICFMD-2005)

会议地点：

Kuala Lumpur(MY)

会议母体文献：

Functional Materials and Devices; Materials Science Forum; vol.517

页码：

217-221

出版时间：

2005