Mono-component versus binary isotherm models for Cu(II) and Pb(II) sorption from binary metal solution by the green alga Pithophora oedogonia

被引：51

作者：

Kumar, Dhananjay ^{[1
]}

Singh, Alpana ^{[1
]}

Gaur, J. P. ^{[1
]}

机构：

[1] Banaras Hindu Univ, Dept Bot, Algal Biol Lab, Varanasi 221005, Uttar Pradesh, India

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 17期

关键词：

Pithophora; Cu(II); Pb(II); mono-component isotherm; binary isotherm;

D O I：

10.1016/j.biortech.2008.03.008

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The sorption of Cu(II) and Pb(II) by Pithophora markedly decreased as the concentration of the secondary metal ion, Cu(II) or Pb(II), increased in the binary metal Solution. However, the test alga showed a greater affinity to sorb Cu(II) than Pb(II) from the binary metal solution. Mono-component Freundlich, Langmuir, Redlich-Peterson and Sips isotherms successfully predicted the sorption of Cu(II) and Pb(II) from both single and binary metal solutions. None of the tested binary sorption isotherms could realistically predict Cu(II) and Pb(H) sorption capacity and affinity of the test alga for the binary metal solutions of varying composition, which mono-component isotherms could very well accomplish. Hence, mono-component isotherm modeling at different concentrations of the secondary metal ion seems to be a better option than binary isotherms for metal sorption from binary metal solution. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：8280 / 8287

页数：8

共 31 条

[1] Biosorption characteristics of Aspergillus flavus biomass for removal of Pb(II) and Cu(II) ions from an aqueous solution [J].