Comparative study of Cd(II) and Cr(VI) biosorption on Staphylococcus xylosus and Pseudomonas sp in single and binary mixtures

被引：183

作者：

Ziagova, M.

Dimitriadis, G.

Aslanidou, D.

Papaioannou, X.

Tzannetaki, E. Litopoulou

Liakopoulou-Kyriakides, M. ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Fac Chem Engn, Sect Chem, Thessaloniki 54124, Greece

[2] Aristotle Univ Thessaloniki, Microbiol Lab, Sch Agr, Thessaloniki 54124, Greece

来源：

BIORESOURCE TECHNOLOGY | 2007年 / 98卷 / 15期

关键词：

biosorption; cadmium(II); chromium(VI); Pseudomonas sp; Staphylococcus xylosus;

D O I：

10.1016/j.biortech.2006.09.043

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Biosorption of Cd(II) and Cr(VI) ions in single solutions using Staphylococcus xylosus and Pseudomonas sp., and their selectivity in binary mixtures was investigated. Langmuir and Freundlich models were applied to describe metal biosorption and the influence of pH, biomass concentration and contact time was determined. Maximum uptake capacity of cadmium was estimated to 250 and 278 mg g(-1), whereas that of chromium to 143 and 95 mg g(-1) for S. xylosus and Pseudomonas sp., respectively. In binary mixtures with Cd(II) ions as the dominant species, there is a profound selectivity for cadmium biosorption, reaching 96% and 89% for Pseudomonas sp. and S. xylosus, respectively, at 10 mg l(-1) Cd(II) and 5 mg l(-1) Cr(VI). Interesting, when chromium (VI) ions are the dominant species, there is selectivity towards chromium around 92% with S. xylosus only. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2859 / 2865

页数：7

共 39 条

[1] Equilibrium modelling of individual and simultaneous biosorption of chromium(VI) and nickel(II) onto dried activated sludge [J].