Comparison of biosorption properties of different kinds of fungi for the removal of Gryfalan Black RL metal-complex dye

被引：141

作者：

Aksu, Zuemriye ^{[1
]}

Karabayur, Goeknur ^{[1
]}

机构：

[1] Hacettepe Univ, Dept Chem Engn, TR-06532 Ankara, Turkey

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 16期

关键词：

biosorption; fungi; Gryfalan Black RL; metal-complex dye;

D O I：

10.1016/j.biortech.2008.01.056

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Three kinds of filamentous fungi (Rhizopus arrhizus, Trametes versicolor, Aspergillus niger) were tested for their ability to adsorb Gryfalan Black RL metal-complex dye as a function of pH, temperature and dye concentration. R. arrhizus and T versicolor exhibited the maximum dye uptake at pH 2.0 and at 25 degrees C while A. niger performed the highest dye biosorption at pH 1.0 and at 35 degrees C. Sorption capacity of each biosorbent increased with increasing initial dye concentration. Among the three fungi, R. arrhizus was the most effective biosorbent showing a maximum dye uptake of 666.7 mg g(-1). The Langmuir model described the equilibrium data of each dye-fungus system accurately in the concentration and temperature ranges studied. Kinetic analysis indicated that both adsorption kinetics and internal diffusion played an important role on controlling the overall adsorption rate for each fungus. Thermodynamic analysis verified that A. niger biosorption was endothermic while the others were exothermic. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：7730 / 7741

页数：12

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