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Sorption of industrial dyes in aqueous solution on extracted chitosan from shrimp shells: Equilibrium, kinetic studies and DFT study

Authors

  • Abdelghani HSINI Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Lahcen BAZZI Laboratory of Industrial Engineering, Energy and Environment (LI3E), SupMTI Rabat, Rabat 10000, Morocco
  • Abdelfattah Farahi Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Mohamed Laabd Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Taoufik Gourti Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Hamid zouggari Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Khadija Barouni Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Omar Louazani Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Abdelbaki Abdelbaki Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.
  • Abdallah Albourine Laboratory of Materials and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco.

Abstract

Adsorption of methylene blue and Congo red onto shrimp shells was studied. The various parameters, such as pH, contact time, adsorbent dose, initial dyes concentration and temperatures, influencing the adsorption of methylene blue and Congo red were optimized. The adsorption capacity was determined using the Langmuir and Freundlich isotherms. The kinetic studies conducted have shown that the adsorption of methylene blue and Congo red by chitosan follows the kinetic model of the pseudo-second order with high correlation coefficient values. The evaluation of the thermodynamic parameters, i.e. ΔGo, ΔHo and ΔSo, revealed that the adsorption was spontaneous and exothermic, for MB and endothermic for the CR.

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Published

09-10-2024 — Updated on 09-10-2024

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How to Cite

HSINI, A., BAZZI , L., Farahi, A., Laabd, M., Gourti, T., zouggari, H., … Albourine, A. (2024). Sorption of industrial dyes in aqueous solution on extracted chitosan from shrimp shells: Equilibrium, kinetic studies and DFT study. African Journal of Management, Engineering and Technology, 2(2), 122–139. Retrieved from https://revues.imist.ma/index.php/AJMET/article/view/51698

Issue

Vol. 2 No. 2 (2024): pp. 82-201

Section

Articles