Adsorption of Cu (II), Zn (II) and Ni (II) ions from aqueous solution by date stones

S. Khenchelaoui, A. Gherbia, Y. Medkour, A. Chergui, A. R. Yeddou, R. Kerbachi


Abstract: The present study is concerned with the valorization of date stones for the waste water treatment. Date stones as adsorbent were characterized by X-ray diffraction, FT-IR and SEM, than tested for the adsorption of Cu (II), Zn (II) and Ni (II) from aqueous solotion. The effects of different parameters on the adsorption of metal metals such as the contact time, the initial concentration and the pH of the solution were investigated. The adsorption capacity was highest at pH5. Cu (II) had higher adsorption capacity than Zn (II) and Ni (II). The equilibrium data were fitted using Freundlich and Langmuir isotherm models.

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