Modelling of batch adsorption of metal ions onto sago waste
by Siew Young Quek, Bushra Al-Duri
International Journal of Environment and Waste Management (IJEWM), Vol. 3, No. 3/4, 2009

Abstract: Adsorption kinetics of lead, copper and zinc ions onto sago waste were investigated in batch system. A two-resistance mass transfer model, namely the Film-Solid Diffusion Model (FSDM) which consisted of an external resistance and intra-particle resistance was applied to describe the experimental data successfully. The external mass transfer coefficient (k_ƒ) values were 1.85 ×10⁻² ± 4.74% cm/s for Pb/sago waste system, 9.06 × 10⁻³ ± 4.14% cm/s for Cu/sago waste, and 6.08 × 10⁻³ ± 2.43% cm/s for Zn/sago waste system. Solid diffusivity values (D_s) were found to increase with increasing initial metal concentration and decreasing adsorbent mass.

Online publication date: Sun, 07-Jun-2009

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