Nickel (II) ion desorption kinetic modeling from unmodified and chemically modified oil palm (Elaeis guineensis) fruit fibre absorbents

  • AA Abia
  • ED Asuquo
  • JC Igwe

Abstract

The desorption of Ni2+ from three oil palm fruit fibre adsorbents (UOPF, 0.5MOPF and 1.0MOPF) using five desorbing solutions showed a desorption efficiency following the trend, 0.1M HCl > 0.1MH2SO4 > 0.1MHNO3 > 0.1MNaOH >hot deionized H2O. The Elovich desorption constant, β values for the 0.1MHCl desorbent were: 6.45 X10-1, 5.57 x 10-1 and 4.34 x 10-1g. mg-.min-1 for UOPF,0.5MOPF and 1.0MOPF adsorbents respectively. The surface residence time ح values for the 0.1MHCl desorbent were; 32.3, 28.6 and 26.8 seconds for UOPF, 0.5MOPF and 1.0MOPF adsorbents respectively. Kinetic modeling analysis of the Elovich and pseudo-first order desorption equations, indicates that the latter model described the desorption of Ni2+ better.

Keywords: Nickel, desorption, modeling, kinetics, Elovich, oil palm

Journal of Applied Science, Engineering and Technology, Volume 8, 2008

Author Biographies

AA Abia
Department of Pure and Industrial Chemistry, University of Port Harcourt, P. M. B. 5323, Choba, Port Harcourt, Nigeria
ED Asuquo
Department of Pure and Industrial Chemistry, University of Port Harcourt, P. M. B. 5323, Choba, Port Harcourt, Nigeria
JC Igwe
Department of Industrial Chemistry, Abia state University, P.M.B. 2000, Uturu, Abia State, Nigeria
Published
2013-11-16
Section
Articles

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eISSN: 1596-3233