Removal of Cadmium, Nickel, and Zinc from Aqueous Solutions by Activated Carbon Prepared from Corncob - Waste Agricultural Materials

Abdel-Shafy, Hussein Ibrahim; Hefny, Mohamed Mahmoud; Ahmed, Hussein M.; Abdel-Haleem, Fatehy M.

doi:10.21608/ejchem.2021.85296.4227

Removal of Cadmium, Nickel, and Zinc from Aqueous Solutions by Activated Carbon Prepared from Corncob - Waste Agricultural Materials

Document Type : Original Article

Authors

¹ Water Research &amp; Pollution Control Department, National Research Center, Dokki, Cairo, Egypt

² Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt

³ Housing and Building Research Center, Egypt, HBRC, Sanitary Institute Environmental

10.21608/ejchem.2021.85296.4227

Abstract

Adsorption of zinc (Zn), cadmium (Cd), and nickel (Ni) from aqueous solutions by corncob (CC) and granular activated carbon prepared from corncob (GACC) were carried out. Synthetic solutions of Cd, Ni, and Zn at 3.0 ppm each were used to perform the adsorption process. A batch pattern was used to determine the kinetics as well as the adsorption isotherm parameters. The obtained results using either both the CC and GACC separately were found to be matched with the Langmuir isotherm model. Furthermore, the breakthrough study was conducted using GACC. The overall results indicated that the breakthrough curve for Cd, Ni, and Zn is the reverse of their adsorption, as demonstrated by R2 and kinetic constant (K) values.

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