oa South African Journal of Chemistry - Removal of lead from aqueous solution by palm kernel fibre

Volume 58, Issue 1
  • ISSN : 0379-4350



The sorption of lead on palm kernel fibre, an agricultural waste product, has been studied. The sorption process was studied as a function of initial lead concentration and initial solution pH. The percentage lead removal was found to increase with increasing initial solution pH up to pH 5 and then to decrease as pH was increased to 6. The pseudo-second order kinetic rate model was employed in the analysis of the kinetics of lead uptake onto the palm kernel fibre. The results show that the pseudo-second order model fits the experimental data with high coefficients of determination (2). The equilibrium sorption capacity was found to be 33.33 mg -1 when 1.0 g of fibre was contacted with 90 mgdm-3 of lead solution at pH 5. Mathematical expressions were derived to relate the pseudo-second order rate constant, , and the change in solution pH with initial lead concentration.

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