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Title: Adsorptive removal of malachite green dye from aqueous solution by ion exchange resins
Authors: Yanardağ, D.
Edebali, S.
Keywords: Adsorption; Adsorption isotherm; Ion exchange resin; Malachite green; Wastewater treatment
Adsorption isotherms; Carbonate minerals; Dyes; Fourier transform infrared spectroscopy; Free energy; Gibbs free energy; Ion exchange; Ion exchange resins; Kinetic parameters; Kinetic theory; Scanning electron microscopy; Wastewater treatment; Adsorbent dosage; Adsorptive removal; Amberlite; B-y Ions; Green dye; Initial dye concentration; Ion-exchange resins; Malachite green; Pseudo-second-order kinetic models; Synthetic polymers; Adsorption
Publisher: Springer Science and Business Media Deutschland GmbH
Abstract: The adsorption of malachite green dye by commercially available synthetic polymers Diaion CR-11 and Amberlite IRC-748 resins has been studied. The effect of the initial dye concentrations, adsorbent dosage, contact time, pH, and temperature were examined. The dye adsorption mechanism for both resins was investigated using Langmuir, Freundlich, Scatchard, and Dubinin-Radushkevich (D-R) isotherm models. Also, experimental data were applied to the pseudo-first-order and pseudo-second-order kinetic models. The Langmuir isotherm and pseudo-second-order kinetic model best fit to the equilibrium data showed maximum adsorption capacities of 102.1 mg/g and 480.6 mg/g for Diaion CR-11 and Amberlite IRC-748, respectively. Thermodynamic studies show that the adsorption of malachite green dye increases with temperature and indicates that the adsorption process of both resins is endothermic. The negative value of change in Gibbs free energy shows spontaneous adsorption of malachite green on both resins. The polymer resins are characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
ISSN: 2190-6815
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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