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Application of Kinetic and isotherm models to the Sorption of Copper (II) on to superabsorbent polymer in powder form


 
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1. Title Title of document Application of Kinetic and isotherm models to the Sorption of Copper (II) on to superabsorbent polymer in powder form
 
2. Creator Author's name, affiliation, country I. Ismi; IBN Tofail University; Morocco
 
2. Creator Author's name, affiliation, country E.H. Rifi; Laboratory of Organic Synthesis and Extraction Processes, Department of Chemistry, Faculty of Sciences, University Ibn Tofail, Kénitra, Morocco; Morocco
 
2. Creator Author's name, affiliation, country A. Lebkiri; Laboratory of Organic Synthesis and Extraction Processes, Department of Chemistry, Faculty of Sciences, University Ibn Tofail, Kénitra, Morocco; Morocco
 
3. Subject Discipline(s)
 
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4. Description Abstract

Equlibrium sorption of the sodium polyacrylate (PANa) in powder form was studied. The Elovich model and the Pseudo-second order model both provided a high degree of correlation with the experimental data for most of the sorption process. The equilibrium sorption data were also fitted into Langmuir, Freundlich, Temkin and Dubinin–Radushkevich (D-R) isotherms. Of the four adsorption isotherms, the R2 value of Langmuir isotherm model was the highest. The maximum monolayer coverage (qm) from Langmuir isotherm model was determined to be 116.8 mg/g, the separation factor indicating a favorable sorption experiment is 0<RL<0.35. Also from Freundlich isotherm model, the sorption intensity (n) which indicates favorable sorption and the correlation value are 2.44 and 0.91 respectively. The heat of sorption process was estimated from Temkin Isotherm model to be 139.52 KJ/mol and the mean free energy was estimated from D-R isotherm model to be 2236 KJ/mol which vividly proved that the adsorption experiment followed a chemical process.
 
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6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 30-09-2014
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://revues.imist.ma/index.php/morjchem/article/view/2167
 
10. Identifier Digital Object Identifier (DOI) https://doi.org/10.48317/IMIST.PRSM/morjchem-v2i4.2167
 
11. Source Title; vol., no. (year) Moroccan Journal of Chemistry; Vol 2, No 4 (2014)
 
12. Language English=en en
 
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15. Rights Copyright and permissions Copyright (c)