Kinetics, equilibrium and thermodynamics of dyes adsorption onto modified chitosan: a review
Author:
Kausar Abida1, Naeem Kashaf1, Iqbal Munawar2, Nazli Zill-i-Huma1, Bhatti Haq N.3, Ashraf Aisha1, Nazir Arif2, Kusuma Heri S.4, Khan Muhammad I.5
Affiliation:
1. Department of Chemistry , Government College Women University Faisalabad , Faisalabad , Pakistan 2. Department of Chemistry , The University of Lahore , Lahore 53700 , Pakistan 3. Department of Chemistry , University of Agriculture Faisalabad 38040 , Faisalabad , Pakistan 4. Analytical Chemistry Research Group, Department of Chemical Education, Faculty of Education and Teachers Training , University of Nusa Cendana , Kupang 85001 , Nusa Tenggara Timur , Indonesia 5. Department of Physics , The University of Lahore , Lahore 53700 , Pakistan
Abstract
Abstract
In view of promising sorption capacity, stability, biodegradability, cost-effectiveness, environmental friendly nature, regeneration and recycling ability, the chitosan (CS) based adsorbents are highly efficient for the sequestration of dyes. Since CS offers variable chemical structures and CS have been modified by incorporating different moieties. The CS composites with unique properties have been employed successfully for dye adsorption with reasonably high adsorption capacity versus other similar adsorbents. Modifications of CS were promising for the preparation of composites that are extensively studied for their adsorption capacities for various dyes. This review highlights the CS and its modification and their applications for the adsorption of dyes. The removal capacities of CS-based adsorbents, equilibrium modeling, kinetics studies and the thermodynamic characteristics are reported. Moreover, the FTIR, BET, SEM, TGA and XRD were employed for the characterization of CS modified adsorbents are also discussed. Results revealed that the modified CS is highly efficient and can be employed for the sequestration of dyes from effluents.
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry
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