title: Assessment of the biosorption characteristics of a macro-fungus for the decolorization of Acid Red 44 (AR44) dye.
abstract: 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 x 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.
authors.affiliation: Department of Chemistry, Faculty of Arts and Science, Eskişehir Osmangazi University, Campus of Meşelik, 26480 Eskişehir, Turkey. takar@ogu.edu.tr
authors.forename: Tamer
authors.initials: T
authors.lastname: Akar
authors.forename: Ilknur
authors.initials: I
authors.lastname: Tosun
authors.forename: Zerrin
authors.initials: Z
authors.lastname: Kaynak
authors.forename: Emine
authors.initials: E
authors.lastname: Kavas
authors.forename: Gonul
authors.initials: G
authors.lastname: Incirkus
authors.forename: Sibel Tunali
authors.initials: ST
authors.lastname: Akar
mesh_terms: D000327:Adsorption; D000364:Agaricus / Q000378:metabolism; D001391:Azo Compounds / Q000737:chemistry / Q000302:isolation & purification*; D001673:Biodegradation, Environmental; D018533:Biomass; D004396:Coloring Agents / Q000737:chemistry / Q000494:pharmacology*; D005658:Fungi / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007700:Kinetics; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification*; D012492:Salts / Q000737:chemistry; D013696:Temperature; D013816:Thermodynamics; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods
chemical_list: C546377:Acid Red 44; D001391:Azo Compounds; D004396:Coloring Agents; D007220:Industrial Waste; D009281:Naphthalenes; D012492:Salts; D014874:Water Pollutants, Chemical