Comparison of biosorption properties of different kinds of fungi for the removal of Gryfalan Black RL metal-complex dye
Comparison of biosorption properties of different kinds of fungi for the removal of Gryfalan Black RL metal-complex dye
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DOI：
10.1016/j.biortech.2008.01.056
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发表时间：
2008-11-01
影响因子：
11.4
通讯作者：
Karabayur, Goeknur
中科院分区：
文献类型：
--
作者：
Aksu, Zuemriye;Karabayur, Goeknur
测试了三种丝状真菌（无根根霉、栓菌、黑曲霉）吸附 Gryfalan Black RL 金属络合物染料的能力（作为 pH、温度和染料浓度的函数）。 R. arrizus 和 T versicolor 在 pH 2.0 和 25°C 时表现出最大的染料吸收，而 A. niger 在 pH 1.0 和 35°C 时表现出最高的染料生物吸附。每种生物吸附剂的吸附能力随着初始染料浓度的增加而增加。在三种真菌中，根根菌是最有效的生物吸附剂，最大染料吸收量为666.7 mg g(-1)。 Langmuir模型准确地描述了在所研究的浓度和温度范围内每个染料-真菌系统的平衡数据。动力学分析表明，吸附动力学和内部扩散在控制每种真菌的总体吸附速率方面发挥着重要作用。热力学分析证实黑曲霉的生物吸附是吸热的，而其他生物吸附是放热的。 (C) 2008 Elsevier Ltd. 保留所有权利。
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.