Publications Nationales

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    Copper, Zinc And Nickel’s Removal By Bentonite Clay: Case Study In Mono And Multicomponent Systems
    (Université M'Hamed Bougara Boumerdes, 2019) Hamdache, F.; Chergui, A.; Halet, Farid; Yeddou, A.R.
    The main purpose of this work is the Copper, Zinc and Nickel’s removal from mono and multi-metal ions aqueous solution using an Algerian bentonite without treatment. The bentonite is characterized using SEM, XRD and X-ray fluorescence. The effect of initial pH and contact time are studied. Under mono and multicomponent systems, the kinetic studies performed at pH 5, indicate that the adsorption follows a pseudo second order model. For both systems, the isotherm data are well correlated with Langmuir model. Whereas the maximum adsorption capacities follow the sequence’s order Cu > Zn > Ni. In the case of multicomponent system, the Cu(II), Zn(II) and Ni(II) adsorptions capacities (58.82, 19.53 and 6.56 mg/g) are lower than the obtained ones for the monocomponent system (58.48, 49.02 and 31.74 mg/g). In addition to that, a mutual competitive effect is observed. Zn(II) and Ni(II) ions adsorption is also inhibited by Cu(II) ions with no change in the maximum Cu(II) adsorption capacity.
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    Medicinal product (Paracetamol) removal by adsorption in aqueous solution; Investigation of kinetic parameters, equilibrium and mass transfer
    (Technology Publishing Group, 2022) Ouazene, Naima; Belhaneche-Bensemra, N.; Khelifi, A.; Benbatta, A.
    The adsorption behavior of the medicinal product, paracetamol, using commercial activated carbon in aqueous solution was investigated. In this work, the study of equilibrium, kinetics as well as the idenorder kinetics with R2 = 0.99 for the three studied concentrations. Two mathematical models were tested in order to determine the limiting step of the mass transfer of the paracetification of the mass transfer stages that occur in adsorption were carried out.It was found that the appropriate isotherm model for the equilibrium process was the Langmuir, and the monolayer adsorption capacity was found to be 104.17mg.g-1 at 298 K. The result of the adsorption kinetics shows that the adsorption maximum was reached at 60 min and follows the linear form of the pseudo second tamol adsorption process onto activated carbon. The results showed that the adsorption process was governed by external diffusion