Abstract

EL-TORKY, A.M.M.; SHAMA, S.A.  and  MOHYE, E.A.A.. Removal of Ni(II), Zn(II) and Co(II) from Aqueous Solutions by Using Different Types of Activated Carbon. Port. Electrochim. Acta [online]. 2021, vol.39, n.3, pp.167-181.  Epub June 30, 2021. ISSN 0872-1904.  https://doi.org/10.4152/pea.2021390302.

The adsorption capacity of activated carbon and activated carbon with amide group towards Ni(II), Zn(II) and Co(II) from aqueous solutions was studied in varying treatment conditions such as contact time, weight of sorbent, pH and initial concentration of treated metal ions. The adsorption capacity was investigated by batch experiments. The results showed that the removal percentages were enhanced by increasing the weight of the added sorbent, contact time, pH of the solution and the initial concentration of treated metal ions.

The optimum order of increasing removal percentages of metal ions by using activated carbon (AC) prepared from sawdust of beech wood at pH=5, with an initial concentration of metal ions of 100 mg/L, and after two hours of shaking, was: Zn(II) <Co(II) <Ni(II). But, in the case of activated carbon with amide group, at the same conditions, it was: Ni(II) <Zn(II) <Co(II).

Keywords : removal; heavy metal; activated carbon; aqueous solution; atomic absorption spectrophotometer.

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