Adsorption of cobalt (III) by HCl and H₂O₂ modified activated carbon
by Zhen Liu; Yan-Guo Zhang; Bing Han; Zhong-Chao Tan; Qing-Hai Li
International Journal of Environment and Pollution (IJEP), Vol. 63, No. 3, 2018

Abstract: Activated carbon prepared from coconut husk was modified with HCl and H₂O₂ and tested for the removal of cobalt (III) in aqueous solutions. The modification altered the activated carbon pore structures and quantities of the functional group. Batch-mode adsorption experiments were carried out for activated carbons modified at different temperatures (25-75°C), reagent concentrations (0.01-0.04 mol· L⁻¹), and times (1-8 h). Results show that, under optimum experimental conditions, H₂O₂ modified activated carbon performs better in terms of adsorption efficiency. Cobalt (III) adsorption efficiency is approximately 86%, and HCl modified activated carbon is around 79%.

Online publication date: Mon, 14-Jan-2019

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