Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II), cadmium(II) and nickel(II) ions on Spirulina platensis

被引：115

作者：

Seker, Aysegul ^{[1
]}

Shahwan, Talal ^{[1
]}

Eroglu, Ahmet E. ^{[1
]}

Yilmaz, Sinan ^{[1
]}

Demirel, Zeliha ^{[3
]}

Dalay, Meltem Conk ^{[2
]}

机构：

[1] Izmir Inst Technol, Dept Chem, TR-35430 Izmir, Turkey

[2] Ege Univ, Dept Bioengn, TR-35100 Izmir, Turkey

[3] Ege Univ, Dept Biol, TR-35100 Izmir, Turkey

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 154卷 / 1-3期

关键词：

Spirulina platensis; biosorption; heavy metal; sorption isotherm;

D O I：

10.1016/j.jhazmat.2007.11.007

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 lead(II), cadmium(II) and nickel(II) ions from aqueous solution by Spirulina platensis was studied as a function of time, concentration, temperature, repetitive reactivity, and ionic competition. The kinetic results obeyed well the pseudo second-order model. Freundlich, Dubinin Radushkevich and Temkin isotherm models were applied in describing the equilibrium partition of the ions. Freundlich isotherm was applied to describe the design of a single-stage batch sorption system. According to the thermodynamic parameters such as Delta G degrees, Delta H degrees and Delta S degrees calculated, the sorption process was endothermic and largely driven towards the products. Sorption activities in a three metal ion system were studied which indicated that there is a relative selectivity of the biosorbent towards Pb2+ ions. The measurements of the repetitive reusability of S. platensis indicated a large capacity towards the three metal ions. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：973 / 980

页数：8

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