Equilibrium and kinetic studies for the biosorption system of copper(II) ion from aqueous solution using Tectona grandis L.f. leaves powder

被引：117

作者：

Kumar, Y. Prasanna ^{[1
]}

King, P. ^{[1
]}

Prasad, V. S. R. K. ^{[1
]}

机构：

[1] Andhra Univ, Dept Chem Engn, Coll Engn, Environm Pollut Control Engn Lab, Visakhapatnam 530003, Andhra Pradesh, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2006年 / 137卷 / 02期

关键词：

Tectona grandis L.f; biosorption capacities; biosorption rates; adsorption isotherm;

D O I：

10.1016/j.jhazmat.2006.04.006

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The biosorption of copper(II) ions from aqueous solution by Tectona grandis L.f. was studied in a batch adsorption system as a function of pH, metal ion concentration, adsorbent concentration and adsorbent size. The biosorption capacities and rates of copper(II) ions onto T grandis L.f. were evaluated. The Langmuir, Freundlich, Redlich-Peterson and Temkin adsorption models were applied to describe the isotherms and isotherm constants. Biosorption isothermal data could be well interpreted by the Langmuir model with maximum adsorption capacity of 15.43 mg/g of copper(II) ion on T grandis L.f. leaves powder. The kinetic experimental data properly correlated with the second-order kinetic model. Various thermodynamic parameters such as Delta G degrees, Delta H degrees, and Delta S degrees were calculated indicating that this system was a spontaneous and exothermic process. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1211 / 1217

页数：7

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