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Adsorption of Acetic acid onto Activated Carbons obtained from Maize cobs by Chemical Activation with Zinc chloride (ZnCl2)

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Author Affiliations

  • 1Department of Chemistry, University of Douala, P.O Box 24157, Douala, CAMEROON
  • 2Higher Teachers’ Training College, University of Maroua, P.O Box 46, Maroua, CAMEROON
  • 3 Department of Inorganic Chemistry, University of Yaoundé I, P.O Box 812, Yaoundé, CAMEROON

Res.J.chem.sci., Volume 2, Issue (9), Pages 42-49, September,18 (2012)

Abstract

The batch isotherm studies of the adsorption of acetic acid on five samples of activated carbon prepared from maize cobs was carried out. The initial concentration of acetic acid was varied between 0.007 and 0.3948 mol/L. The comparison of the adsorption capacities of these samples with that of a commercial activated carbon of animal origin were performed to evaluate the effect of process parameters. From the experimental data, the isotherm parameters of Freundlich, Langmuir, Temkin and Dubinin-Raduschkevitch were calculated for all the samples and compared. For all the samples, these data fitted well the four isotherm models in the range of the concentrations tested. There exists a correlation between the physico-chemical properties of the activated carbons and the sorption processes.

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