Enhancing clay adsorption properties: a comparison between chemical and combined chemical/thermal treatments - Archive ouverte HAL
Article Dans Une Revue Groundwater for Sustainable Development Année : 2021

Enhancing clay adsorption properties: a comparison between chemical and combined chemical/thermal treatments

Résumé

A Moroccan bentonite was activated by sodium carbonate (Na-Be), and by a combined chemical and thermal activation (Na-Be450). The materials characterization was performed by XRD, EDS, FTIR, SEM and porosity measurements. The efficiency of Na-Be and Na-Be450 as low-cost adsorbents to remove nickel and silver from aqueous solution was checked. The Langmuir, Freundlich and Langmuir-Freundlich models were used for the analysis of equilibrium isotherms. Na-Be and Na-Be450 demonstrated a good removal efficiency towards nickel and silver, even in complex effluents (industrials wastewaters). The regeneration study proved that Na-Be450 presented all the characteristics of an efficient material for nickel removal.

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Chimie
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Dates et versions

hal-03619685 , version 1 (25-03-2022)

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Youssef El Ouardi, Véronique Lenoble, Catherine Branger, Katri Laatikainen, Bernard Angeletti, et al.. Enhancing clay adsorption properties: a comparison between chemical and combined chemical/thermal treatments. Groundwater for Sustainable Development, 2021, 12, pp.100544. ⟨10.1016/j.gsd.2020.100544⟩. ⟨hal-03619685⟩
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