Algerian Journal of Engineering Research
Volume 3, Numéro 1, Pages 1-6
2019-06-01

Preparation Of An Activated Carbon / β-cyclodextrin Composite Material With High Adsorption Capacity Of Pb2+ Using An Hydrothermal Method



Authors : Yahiaoui Khokha . Boudrahem Farouk . Aissani-benissad Farida .

Abstract

β-cyclodextrin (β-CD) and activated carbon (AC) were used as starting material to hydrothermally synthesize new hybrid material. It was found that hybrid carbon material, rich in oxygen-containing functional groups like -C=O-, -OH, etc., can be effectively well-dispersed on the surface and at the entrance of the pores of AC. The carbon composite that was obtained exhibited a remarkably enhanced adsorption capacity for Pb (II) per unit mass, reaching a value twice that of non modified AC. The high specific adsorption capacity of the composite can be explained by the abundant surface oxygen-containing functional groups and the relatively well-developed pore structure. In addition to this, the adsorption process studied was best described by the pseudo-first and pseudo-second order kinetic model.

Keywords

Activated carbon, β-cyclodextrin, Adsorption, lead (II), modeling, Non-linear method.

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