Assessment of the biosorption characteristics of a macro-fungus for the decolorization of Acid Red 44 (AR44) dye

This study focuses on the possible use of macro-fungus Agaricus bisporus to remove Acid Red 44 dye from aqueous solutions. Batch equilibrium studies were carried out as a function of pH, biomass amount, contact time and temperature to determine the decolorization efficiency of biosorbent. The highes...

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Bibliographic Details
Published in:	Journal of hazardous materials Vol. 171; no. 1; pp. 865 - 871
Main Authors:	Akar, Tamer, Tosun, İlknur, Kaynak, Zerrin, Kavas, Emine, Incirkus, Gonul, Akar, Sibel Tunali
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier B.V 15-11-2009 Elsevier
Subjects:	Adsorption Agaricus - metabolism Agaricus bisporus Applied sciences Azo Compounds - chemistry Azo Compounds - isolation & purification Biodegradation, Environmental Biological and medical sciences Biomass Biosorption Biotechnology Chemical engineering Coloring Agents - chemistry Coloring Agents - pharmacology Dye Exact sciences and technology Fundamental and applied biological sciences. Psychology Fungi - metabolism General purification processes Hydrogen-Ion Concentration Industrial Waste Isotherm Kinetics Macro-fungi Methods. Procedures. Technologies Naphthalenes - chemistry Naphthalenes - isolation & purification Others Pollution Salts - chemistry Temperature Thermodynamics Various methods and equipments Waste Disposal, Fluid - methods Wastewaters Water Pollutants, Chemical - isolation & purification Water Purification - methods Water treatment and pollution Isotherm Dye Biosorption Kinetics Macro-fungi Scanning electron microscopy Second order Discoloration Dyes Adsorption isotherm Biomass Modeling Langmuir isotherm Waste water Surface structure Kinetic model Batchwise Thermodynamic parameter pH Physicochemical purification Aqueous solution Fourier-transformed infrared spectrometry
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Summary:	This study focuses on the possible use of macro-fungus Agaricus bisporus to remove Acid Red 44 dye from aqueous solutions. Batch equilibrium studies were carried out as a function of pH, biomass amount, contact time and temperature to determine the decolorization efficiency of biosorbent. The highest dye removal yield was achieved at pH 2.0. Equilibrium occurred within about 30 min. Biosorption data were successfully described by Langmuir isotherm model and the pseudo-second-order kinetic model. The maximum monolayer biosorption capacity of biosorbent material was found as 1.19 × 10 −4 mol g −1. Thermodynamic parameters indicated that the biosorption of Acid Red 44 onto fungal biomass was spontaneous and endothermic in nature. Fourier transform infrared spectroscopy and scanning electron microscopy were used for the characterization of possible dye–biosorbent interaction and surface structure of biosorbent, respectively. Finally the proposed biosorbent was successfully used for the decolorization of Acid Red 44 in synthetic wastewater conditions.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0304-3894 1873-3336
DOI:	10.1016/j.jhazmat.2009.06.085