Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 121, Issue 1-3, Pages 243-246Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2004.11.025
Keywords
maple sawdust; heavy metals; nickel; adsorption; wastewater
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The main parameters influencing Nickel (II) metal sorption on maple sawdust were: initial metal ion concentration, amount of adsorbent, and pH value of solution. The maximum percent metal removal was attained after about 1 h. The greatest increase in the rate of adsorption of metal ions on sawdust was observed for pH changes from 2 to 5. An empirical relationship has been obtained to predict the percentage Nickel (II) removal at any time for known values of sorbent and initial sorbate concentration. The experimental results provided evidence for chelation ion exchange as the major adsorption mechanisms for binding metal ions to the sawdust. The adsorbent can be effectively regenerated using 0.1 M strong acid and reused. (c) 2004 Published by Elsevier B.V.
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