Removal of chromium (VI) ions from aqueous solutions by using Kiwi shell

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Cumhuriyet Üniversitesi Fen-Edebiyat Fakültesi Fen Bilimleri Dergisi
Volume:36 Issue:3
Removal of chromium (VI) ions from aqueous solutions by using Kiwi shell

Removal of chromium (VI) ions from aqueous solutions by using Kiwi shell

Authors : Maryam KHAJESADEGH, Fatemeh SABERMAHANİ, Nosrat MADADİ MAHANİ

Pages : 2083-2089

View : 59 | Download : 14

Publication Date : 2015-05-13

Article Type : Review Paper

Abstract :Abstract. Kiwi shell, an waste material, was investigated as an adsorbent for the removal of Cr(IV) toxic metal from aqueous solutions. Batch experiments have been performed as a function of pH, contact time, dose of sorbent, initial Cr(IV) concentration, strength ionic and temperature. The experiments showed that the adsorption process was quick and the equilibrium attained within 20 min. Evaluation using Langmuir gave sorption capacity 6.23 mg g -1 . Chromium uptake by Kiwi shell was best described by pseudo-second order model. Using the equilibrium concentration constants obtained at different temperatures, various thermodynamic parameters, have been calculated. The results indicated that Chromium adsorption was feasible, spontaneous, and exothermic.
Keywords : Removal, Chromium, Kiwishell, kinetics

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