REMOVAL OF LEAD (II) IONS FROM AQUEOUS SOLUTION USING SAWDUST
Authors: *Osakue I.Y, Yerima Y, Ajide, M.T
The focus of this work was to assess the performance of sawdust as a potential adsorbent for removing Lead (II) ion from aqueous solution. The raw sawdust was compared with the activated Sawdust in order to see the performance of both as an adsorbent. Activation of the Sawdust was done in order to improve the adsorption capacity. The activated sawdust was characterized to determine its physiochemical properties such as moisture content, ash content, functional groups and surface structure. The effect of indirect adsorbent/adsorbate interactions was studied using adsorption isotherms of the monolayer Freundlich and Langmuir was found to match the Langmuir Adsorption isotherm with a coefficient of determination (R2) value of 0.825. The batch experimental result revealed an increase in the percentage of Pb (II) ion removal by the raw and activated Sawdust and increased with an increase in adsorbent dose and contact time. The study of kinetics of Pb (II) ion removal onto activated Sawdust followed a second order kinetic model with an R2 value of 0.937. In general, the result of the activated sawdust compared to the raw sawdust demonstrated that the activated sawdust is a more efficient adsorbent material capable of removing lead from waste water.
Affiliations: Department of Chemical Engineering, College of Engineering, Igbinedion University Okada, Okada, Edo State, Nigeria
Keywords: Adsorption, Adsorbent, Sawdust, Lead (II) Ion, Isotherm
Published date: 2018/06/30