Biosorption of nickel on blank alginate beads, free and immobilized algal cells

被引：175

作者：

Abu Al-Rub, FA ^{[1
]}

El-Naas, MH ^{[1
]}

Benyahia, F ^{[1
]}

Ashour, I ^{[1
]}

机构：

[1] UAE Univ, Dept Chem & Petr Engn, Al Ain, U Arab Emirates

来源：

PROCESS BIOCHEMISTRY | 2004年 / 39卷 / 11期

关键词：

biosorption; immobilization; algal cells; nickel; isotherms;

D O I：

10.1016/j.procbio.2003.08.002

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The potential use of blank alginate beads, free (non-immobilized) live and dead and immobilized dead algal cells for the removal of nickel ions from aqueous solutions was investigated. Immobilization enhanced the sorption of nickel and repetitive use of the sorbent could be achieved. Increasing initial pH or initial nickel ions concentration resulted in an increase in nickel uptake. The experimental results were fitted satisfactory to the Langmuir and Freundlich isotherm models. The results of the kinetic studies showed that the sorption of nickel ions on blank alginate beads, free live, dead and alginate immobilized dead algal cells followed pseudo-second order kinetics. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：1767 / 1773

页数：7

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