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https://doi.org/10.1007/s11356-012-1133-4

has been cited by the following article:

• TITLE: Kinetic and Thermodynamic Study of the Elimination of Remazol Black on Activated Carbon Based on Ricinodendron heudelotii Shells

  AUTHORS: Kouakou Yao Urbain, Kambiré Ollo, Eroi N’goran Sévérin, Koné Yétchié Tchonrontcha, Trokourey Albert

  KEYWORDS: Activated Carbon, Ricinodendron heudelotii, Dye Removal, Optimization, Adsorption Isotherm

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.11 No.9, September 15, 2023

  ABSTRACT: Activated carbon made from the shells of Ricinodendron heudelotii was used to remove the remazol black dye in aqueous solution. The results of the characterization of this carbon revealed that it is microporous, with a basic global surface (0.337 mmol/L) and a specific surface of 612 m2/g. The prepared carbon therefore has excellent adsorbent properties. Kinetic and thermodynamic studies were carried out to describe the adsorption mechanism of remazol black on this carbon. It appears from this study that the pseudo-second-order kinetic model is the best suited to describe this adsorption phenomenon with an equilibrium time of 200 min. The adsorption equilibrium study revealed that Langmuir and Freundlich models can help to describe the adsorption process. We note that the optimum pH and optimum mass for the removal of 20 mg/L of remazol black are 3 and 0.25 g, respectively. This carbon made it possible to eliminate more than 98% of the remazol dye in aqueous solution. The thermodynamic study revealed that the adsorption is of the physisorption type, spontaneous and endothermic.