Diyala Journal for Pure Science
Scientific Refereed Journal Published By College of Science - University of Diyala
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Diyala Journal for Pure Science DJPS
P- ISSN:2222-8373, E-ISSN:2518-9255
Volume 13, Issue 3, Part 2 , July. 2017
Adsorption of Co(Ii) Ion from its Aqueous Solution Using Hydrogel Beads as Adsorbent
Amir Fadhil Dawood Al-Niaimi, Ahmed Mahdi Saeed , Sara T. Abed
Year: 2017, Volume: 13, Issue: 3, Part: 2
Pages: 133-148, DOI: http://dx.doi.org/10.24237/djps.1303.296C
In this study one of the super absorbent hydrogel beads was used for adsorb Co(II) ion from aqueous solution. The adsorption capacity of the adsorbent is presented and the time required to reach a maximum capacity of bead (112.5 mg/g) form Co (II) ion was about 24 hr. The initial concentration, temperature, time and pH effect on adsorption process were studied. The experimental data have been analyzed using the Langmuir ,Freundlich, Dubinin and Temkin. The Langmuir isotherm model gave the highest R2 value of 0.9998. The thermodynamic parameters were studied and calculated. First-order and second- order kinetic models were used and it is shown that the experimental data was in reliable compliance with the first- order model with R2 value of 0.992 .
Key words: adsorption ,Co(II) ion, hydrogel beads.