Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
585219 | Journal of Hazardous Materials | 2006 | 7 Pages |
Abstract
This study compares the abilities of four low-cost materials: peels of peas, broad bean, and medlar, respectively and fig leaves, to remove cadmium from aqueous solutions. Kinetic data and equilibrium sorption isotherms were measured in batch conditions. Kinetics of cadmium sorption was contact time, initial cadmium concentration and sorbent type dependent. The results also showed that the kinetics of cadmium sorption were described by a pseudo second-order rate model. The cadmium uptake of these low-cost materials was quantitatively evaluated using sorption isotherms. Results indicated that Langmuir model gave an acceptable fit to the experimental data. A high cadmium sorption was observed by these materials. The broad bean peel was the most effective to remove cadmium ions with a maximum sorption capacity about 147.71Â mg/g followed by peas peel (118.91Â mg/g), fig leaves (103.09Â mg/g), and medlar peel (98.14Â mg/g).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
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Authors
H. Benaïssa,