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Effect of the adsorption pH and temperature on the parameters of the Brouers–Sotolongo models

Abstract : The goal of the present paper was to elucidate ifand howthe parameters of the Brouers-Sotolongo fractal BSf (n,α) kinetic model (α and τ C) on the one hand, and of the generalised Brouers-Sotolongo GBS isotherm model (a and b) on the other hand, are correlated with adsorption pH and temperature. For that purpose, adsorption of aqueous solutions of two common dyes, methylene blue (MB) and methyl orange (MO) was carried out on four activated carbons (ACs) at three temperatures (25, 35 and 50°C) and three pH (2.5, 5 and 8). Adsorption kinetics and isotherms were measured, and the corresponding curves were best fitted with specific forms of the aforementioned models, and corresponding to equations known as BSf (1,α) kinetic and Brouers-Gaspard isotherm models. Correlations between all models parameters and adsorption conditions were found, bringing some information about the adsorbate-adsorbent interaction.
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https://hal.univ-lorraine.fr/hal-03039241
Contributor : Maria Vanessa Fierro Pastor <>
Submitted on : Thursday, December 3, 2020 - 6:26:40 PM
Last modification on : Sunday, December 6, 2020 - 1:18:02 PM

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Taher Selmi, Mongi Seffen, Alain Celzard, Vanessa Fierro. Effect of the adsorption pH and temperature on the parameters of the Brouers–Sotolongo models. Environmental Science and Pollution Research, Springer Verlag, 2020, 27 (19), pp.23437-23446. ⟨10.1007/s11356-018-3835-8⟩. ⟨hal-03039241⟩

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