화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.3, 745-751, May, 2014
DOI10.1016/j.jiec.2013.06.030  Export Citation
Kinetic and equilibrium studies of cobalt adsorption on apricot stone activated carbon
M. Abbas†, S. Kaddour1, and M. Trari2
  • Laboratory of Soft Technologies and Biodiversity (LTDVPMBB), Faculty of Sciences, University M’hamed Bougara of Boumerdes, 35000, Algeria
  • 1Laboratory of Macromolecular Synthesis and Macromolecular Thio-organic, Faculty of Chemistry (USTHB), BP 32-16111 El-Alia, Bab Ezzouar, Algeria
  • 2Laboratory of Storage and Valorization of Renewable Energies, Faculty of Chemistry (USTHB), BP 32-16111 El-Alia, Bab Ezzouar, Algeria
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The activated carbon from apricot stone with H3PO4 and its ability to remove Co2+ are reported. The FTIR spectroscopy brings insights on interactions between the functional groups of the carbon and Co2+. Adsorption studies are carried in batch mode by varying the initial Co2+ concentration and pH. A comparison of two kinetic models on the overall adsorption rate shows that the system is described by the pseudo-second-order kinetic model. The Freundlich model fits the data with a monolayer adsorption capacity of 111.11 mg/g at pH 9. The enthalpy and free energy indicate an endothermic and not spontaneous process.
Keywords:Apricot stone;Cobalt;Heavy metal removal;Kinetic;Isotherm;Activated carbon
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