کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
685050 889032 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of biosorption properties of different kinds of fungi for the removal of Gryfalan Black RL metal-complex dye
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Comparison of biosorption properties of different kinds of fungi for the removal of Gryfalan Black RL metal-complex dye
چکیده انگلیسی

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 °C while A. niger performed the highest dye biosorption at pH 1.0 and at 35 °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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 99, Issue 16, November 2008, Pages 7730–7741
نویسندگان
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