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oai:ojs.www.eurjchem.com:article/2712 2025-12-31T07:17:19Z eurjchem:ART driver

Kinetic study on the adsorption of pollutants from olive mill wastewater onto granular activated carbon Zine, Mohammed Touach, Noureddine Lofti, El Mostapha Moulin, Philippe GAC Adsorption Modelisation Ultrafiltration Hyrid process Olive mill wastewater This research aimed to examine the effect of contact time on total organic carbon (TOC) removal rates associated with adsorption of pollutants from different olive mill wastewater (OMW) samples onto activated granular activated carbon (GAC). The first sample was a raw OMW that was microfiltered through a 100 µm membrane and the second sample was an OMW’s permeate from a 50 kDa filtration. The TOC removal rate (%) of pollutants from prefiltered OMW increased over time, reaching its peak after 34 h (2040 min). Subsequently, the system reached adsorption equilibrium, corresponding to a removal rate of 60%. Then, it stabilized at this value till the end of adsorption at 48 h (2880 min). TOC removal rates (%) (corresponding to adsorption at different concentrations of GAC) of pollutants permeating 50 kDa also increased over time, reaching their peaks after 2040 minutes.  The highest TOC removal rate was around 85%. This study also investigated the kinetics associated with this adsorption. To gain a comprehensive process understanding, pseudo-first-order (PFO) and pseudo-second-order (PSO) were employed as kinetic models. The second-order model best expressed the adsorption process which achieved equilibrium within 34 h. Atlanta Publishing House LLC 2025-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/2712 10.5155/eurjchem.16.4.364-369.2712 European Journal of Chemistry; Vol. 16 No. 4 (2025): December 2025; 364-369 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/2712/2982 Copyright (c) 2025 Mohammed Zine, Noureddine Touach, El Mostapha Lofti, Philippe Moulin https://creativecommons.org/licenses/by-nc/4.0