Adsorption of Dye C.I. Reactive Red 15 onto Montmorillonite: Kinetics and Adsorption Isotherms

The adsorption of dye C.I. Reactive Red 15 in aqueous solution onto montmorillonite was carried out in detail. The operation parameters influencing the adsorption process of dye C.I. Reactive Red 15 such as contact time and initial dye concentration were studied. Physicochemical characterizations in...

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Published inNature environment and pollution technology Vol. 18; no. 2; pp. 613 - 618
Main Authors Huang, Chengcai, Qiu, Muqing, Bao, Linfa, Zhang, Hao
Format Journal Article
LanguageEnglish
Published Karad Technoscience Publications 01.06.2019
Subjects
Adsorbates
Adsorbents
Adsorption
Aqueous solutions
Chemisorption
Dyes
Fourier transforms
Infrared analysis
Infrared spectroscopy
Isotherms
Kinetics
Membrane separation
Microscopy
Montmorillonite
Organic chemicals
Organic chemistry
Oxidation
Pore size
Process parameters
Reaction kinetics
Scanning electron microscopy
Spectrum analysis
Surface chemistry
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Summary:The adsorption of dye C.I. Reactive Red 15 in aqueous solution onto montmorillonite was carried out in detail. The operation parameters influencing the adsorption process of dye C.I. Reactive Red 15 such as contact time and initial dye concentration were studied. Physicochemical characterizations including microscopy and Fourier transform infrared spectroscopy analyses of the surface of montmorillonite were carried out. The kinetic study was performed by the pseudo first order and the pseudo second order reactions. According to the experimental data, the pseudo second order model better described the adsorption of dye onto montmorillonite. It implies that the predominant process is chemisorption, which involves a sharing of electrons between the adsorbate and the surface of the adsorbent. The adsorption isotherms were studied by Langmuir model and Freundlich model. The results indicated that the adsorption followed the Langmuir model. The dye C.I. Reactive Red 15 adsorption onto montmorillonite was monolayer adsorption.
ISSN:0972-6268
2395-3454