Abstract

Imen Boughaita¹, Chafia Bouchelta¹, Mohamed Salah Medjram¹ and Pierre Magri²

DOI : http://dx.doi.org/10.13005/ojc/330510

In this work, an activated carbon derived from date pits and stems (DPSAC) was prepared by physical activation under N₂ and used as a support of cobalt transition metals, by wetness impregnation at different Co content and different calcination temperatures. The optimal operator conditions were 20 wt% cobalt impregnation ratio and 300 °C calcination temperature. The grafted material was characterized by methods: thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Fourier transform of infrared spectroscopy (FTIR). The activated carbon (DPSAC) and grafted activated carbon (Co/DPSAC) were realized on adsorption of 2,4-dichlorophenoxyacetic acid (2,4-D) from aqueous solution , it was found that the  cobalt-grafted dates pits and stems activated carbon promoted the 2,4-D adsorption kinetics, The Langmuir and Freundlich isotherms models were applied for the adsorption results. The rate of adsorption of 2,4-D onto (DPSAC) and (Co/DPSAC) were estimated  and described using a pseudo-second order model.

Adsorption; Cobalt Grafted Activated Carbon; Impregnation; ( 2,4-D); Co/DPSAC; Dates Pits and Stems

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