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Removal of cadmium and copper ions from aqueous solutions with thiolated maize (Zea mays) cob meal
AbstractThe sorption behaviours of cadmium and copper ions on maize (Zea mays) cob meal modified by the incorporation of thiol groups was examined at 29°C. The removal of the metal ions from solution by the thiolated material was markedly higher than the removal by the unmodified meal and Cd(II) ions were sorbed to a greater extent than Cu. The sorption data fitted the Langmuir isotherm equation, and saturation constants, As, for sorption on thiolated maize cob meal of 4·53 mmol g−1 and 4·89 mmol g−1 were predicted for cadmium ions and copper ions respectively. A rate equation based on the concept of linear driving-force fitted the sorption rate data well, and gave a value of about 0·05 min−1 for the particle-diffusion control rate coefficient for the sorption of the metal ions on thiolated meal.
Removal of cadmium and copper ions from aqueous solutions with thiolated maize (Zea mays) cob meal
AbstractThe sorption behaviours of cadmium and copper ions on maize (Zea mays) cob meal modified by the incorporation of thiol groups was examined at 29°C. The removal of the metal ions from solution by the thiolated material was markedly higher than the removal by the unmodified meal and Cd(II) ions were sorbed to a greater extent than Cu. The sorption data fitted the Langmuir isotherm equation, and saturation constants, As, for sorption on thiolated maize cob meal of 4·53 mmol g−1 and 4·89 mmol g−1 were predicted for cadmium ions and copper ions respectively. A rate equation based on the concept of linear driving-force fitted the sorption rate data well, and gave a value of about 0·05 min−1 for the particle-diffusion control rate coefficient for the sorption of the metal ions on thiolated meal.
Removal of cadmium and copper ions from aqueous solutions with thiolated maize (Zea mays) cob meal
Okieimen, F.E. (author) / Okundaye, J.N. (author)
Biological Wastes ; 30 ; 225-230
1989-03-31
6 pages
Article (Journal)
Electronic Resource
English
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