Adsorption Characteristics of Sol Gel-Derived Zirconia for Cesium Ions from Aqueous Solutions
Abstract
:1. Introduction
2. Results and Discussion
2.1. X-ray Diffraction (XRD) Analysis
2.2. FTIR Characterization
2.3. Effect of pH
2.4. Effect of Contact Time and Temperature
2.5. Kinetic Study
Model | Parameter | Temperature, K | ||
---|---|---|---|---|
298 | 313 | 333 | ||
Experimental date | qe, exp, mmolg/g | 5.9 | 7.1 | 7.9 |
K1, g/mmolg min | 0.038 | 0.032 | 0.035 | |
Pseudo-First order | qe, mmolg/g | 8.5 | 10.0 | 10.5 |
R2 | 0.92 | 0.91 | 0.92 | |
Pseudo-Second order | K2, g/mmolg min | 0.02 | 0.02 | 0.2 |
qe,mmolg/g | 7.01 | 8.04 | 9.25 | |
h, mmol/g min | 0.94 | 1.09 | 1.76 | |
R2 | 0.999 | 0.999 | 0.999 |
2.6. Thermodynamic Studies
Tem. K | Di 10−11, m2/s | Do 10−12 m2/s | Ea KJ/mol | R2 | ΔS* J/mol k | ΔG* KJ/mol | ΔH* KJ/mol |
---|---|---|---|---|---|---|---|
298 | 4.12 | 0.999 | |||||
313 | 4.56 | 2.07 | 3.95 | 0.999 | 464.4 | 128.5 | 1.68 |
333 | 4.98 | 0.999 |
3. Experimental
3.1. Chemicals and Reagents
3.2. Preparation and Characterization of Zirconium Oxide
3.3. Sorption Studies
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Yakout, S.M.; Hassan, H.S. Adsorption Characteristics of Sol Gel-Derived Zirconia for Cesium Ions from Aqueous Solutions. Molecules 2014, 19, 9160-9172. https://doi.org/10.3390/molecules19079160
Yakout SM, Hassan HS. Adsorption Characteristics of Sol Gel-Derived Zirconia for Cesium Ions from Aqueous Solutions. Molecules. 2014; 19(7):9160-9172. https://doi.org/10.3390/molecules19079160
Chicago/Turabian StyleYakout, Sobhy M., and Hisham S. Hassan. 2014. "Adsorption Characteristics of Sol Gel-Derived Zirconia for Cesium Ions from Aqueous Solutions" Molecules 19, no. 7: 9160-9172. https://doi.org/10.3390/molecules19079160