Thermodynamic Study on the Adsorption of Pb2+ and Zn2+ From Aqueous Solution by Human Hair

被引：6

作者：

Ekop, A. S. ^{[1
]}

Eddy, N. O. ^{[2
]}

机构：

[1] Univ Uyo, Dept Chem, Uyo, Akwa Ibom State, Nigeria

[2] Ahmadu Bello Univ, Dept Chem, Zaria, Kaduna State, Nigeria

来源：

E-JOURNAL OF CHEMISTRY | 2010年 / 7卷 / 04期

关键词：

Adsorption; Pb(II); Zn(II); Human hair; Kinetics; Thermodynamic; BIOSORPTION; INHIBITION; CORROSION; REMOVAL;

D O I：

10.1155/2010/849239

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Adsorption of Pb(II) and Zn(II) ions from aqueous solutions was studied in a batch system using modified human hair. The optimum conditions for the adsorption of Pb(II) and Zn(II) ions from aqueous solution by human hair were investigated by considering the extent of adsorption with respect to contact time, initial metal ion concentration and temperature. The results obtained indicates that the extent of metal ions removed decreases with increasing contact time but increased with increase in the initial metal ion concentration. The adsorption equilibrium data best fitted Freundlich adsorption isotherm. The adsorption of Pb(II) and Zn(II) ions onto human hair is endothermic, spontaneous and is characterised by increasing degree of orderliness.

引用

页码：1296 / 1303

页数：8

共 19 条

[1]

[Anonymous], ELECT J ENV AGR FOOD

[2] Adsorption of Chromium Ion by Acid Activated Low Cost Carbon-Kinetic, Mechanistic, Thermodynamic and Equilibrium Studies [J].