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Removal of Iron (III) Ions From It’s Aqueous Solutions By Bentonite clay | ||
| Diyala Journal For Pure Science | ||
| Article 1, Volume 9, Issue 1, 2013, Pages 9-23 | ||
| Author | ||
| Sahar Rihan Fadhel | ||
| Abstract | ||
| This research is concerned with one of applications of adsorption from solution . It deals with the study of the ability of selected clay surface (bentonite) for the adsorption of iron (III) ion . The target of this study is to search for suitable surfaces which posses high activity for the adsorption of iron (III) ion , and then to use these surfaces for treatment the pollution of aqueous solutions by this heavy metal ion . The technique of flame atomic absorptiometry was used to determine of the quantity of ion adsorbate.The constructed isotherms were studied at different parameters such as, temperature, pH,adsorbent weight and contact time (equilibrium time). This study exhibited the following results : The shape of the isotherm obtained from the adsorption of iron (III) ion on this clay found to be comparable in all cases to the Langmuir equation ,the results indicated exothermic processes for iron(III) ion and the thermodynamic functions (H, G and S) were calculated and the results were discussed, at constant temperature the increase in weight of the adsorbent increased the removal percentage values of iron(III) ion, and the change in pH values indicated that removal percentages of iron(III) ion was increased with an increase in pH | ||
| Keywords | ||
| adsorption; Adsorbent; adsorbate; adsorption isotherm | ||
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