Innovative Plant-Derived Biomaterials for Sustainable and Effective Removal of Cationic and Anionic Dyes: Kinetic and Thermodynamic Study

The aim of this study is to purify industrial textile effluents by treating two types of commonly encountered dyes: blue maxilon (BM), of cationic nature, and black eriochrome (NE), of anionic nature. We intend to employ an innovative approach based on the adsorption of these dyes onto a novel veget...

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Bibliographic Details
Published in:Processes 2024-05, Vol.12 (5), p.922
Main Authors: Saoudi Hassani, El Mokhtar, Azzouni, Dounia, Alanazi, Mohammed M., Mehdaoui, Imane, Mahmoud, Rachid, Kabra, Atul, Taleb, Abdeslam, Taleb, Mustapha, Rais, Zakia
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Biological products
Biomaterials
Biomedical materials
Cations
Dyes
Effluents
Equilibrium
Industrial textiles
Isotherms
Membrane separation
Oxidation
Physicochemical properties
Plants
Pollutants
Pollution
Surface active agents
Surface water
Textiles
Thermal properties
Thermodynamics
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Summary:The aim of this study is to purify industrial textile effluents by treating two types of commonly encountered dyes: blue maxilon (BM), of cationic nature, and black eriochrome (NE), of anionic nature. We intend to employ an innovative approach based on the adsorption of these dyes onto a novel vegetal biomaterial derived from Aleppo pine fibers (FPAs). A kinetic and thermodynamic study was conducted. The effect of some physicochemical parameters on both dye adsorption and FPAs was also evaluated. The modeling of the adsorption results was performed using Langmuir, Freundlich, Temkin, and Dubinin Radushkevich (D-R) isotherms. The results indicate that the equilibrium time strongly depends on the initial concentration of the two dyes, being 60 min with pseudo-second-order adsorption kinetics for both dyes. Adsorption isotherms under the optimal conditions of adsorbent mass, temperature, medium pH, and dye concentration were used to determine the maximum adsorption efficiency, which was close to 93% and 98% for BM and NE, respectively. The results also show that the adsorption of both dyes on FPAs fits well with Langmuir’s model. The thermodynamic study indicates that the adsorption of both dyes on FPAs is spontaneous and exothermic in nature for BM and endothermic for NE.
ISSN:2227-9717
2227-9717
DOI:10.3390/pr12050922