Adsorption of Ag (I) Ions at the Zirconium Phosphate/KNO3 Aqueous Solution Interface
Abstract
:1. Introduction
2. Materials and Methods
2.1. Adsorbents
2.2. Physicochemical Methods of Investigations
- c0—the Ag+ initial concentration (mol/dm3)
- V—the volume of the solution (dm3)
- m—the adsorbent mass (g)
- Sw—the specific surface area (m2/g)
- Nr—the number of counts from the source taken during the adsorption,
- N0—the number of counts from the source taken before adsorption,
- cr—the Ag+ equilibrium concentration (mol/dm3)
3. Results and Discussion
3.1. FTIR Study of the ZrP Samples
3.2. Electrophoretic Study of the Zirconium Phosphate Samples
3.3. Adsorption of Ag (I) Ions at the Interface of the ZrP Sample/Solution 0.001 mol/dm3 KNO3
- n—the number of surface groups reacting with the silver cation = the number of released H+ cations.
- βns—the thermodynamic constant of the reaction.
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Preparation Conditions | Sample Designation | Specific Surface Area (m2/g) | Adsorbent Mass (g) | Adsorbent Surface m2 |
---|---|---|---|---|
Initial precipitated | Initial | 195 | 0.1283 | 25.0 |
HTT 150 °C Xerogel | Xero | 278 | 0.0899 | 25.0 |
HTT 150 °C Gel | Gel HTT | 450 | 0.0556 | 25.0 |
MWT 230 °C xerogel | MWT Xero | 234 | 0.1068 | 25.0 |
MWT 230 °C gel | MWT Gel | 319 | 0.0784 | 25.0 |
MChT 500 rpm gel | MChT Gel | 406 | 0.0616 | 25.0 |
Label | pHiep | pKa1 | pKa2 |
---|---|---|---|
0.001 | |||
Xerogel | |||
Initial | 3.9 | 0.87 | 6.28 |
Xerogel | 4.1 | 0.52 | 7.24 |
MWT xerogel | 2.2 | 4.70 | |
Gel | |||
Initial | 3.9 | 0.87 | 6.28 |
Gel | 2.5 | 5.36 | |
MWT gel | 2.9 | 5.60 | |
MChT gel | 2.9 | 5.47 |
Sample No | Sample Code | Ag [I] Conc. (μmol/dm3) | pβns | n | pH50% | ∆pH90–10% |
---|---|---|---|---|---|---|
1 | Initial | 1 | 0.065 | 0.77 | 3.2 | 2.5 |
10 | 0.033 | 0.66 | 3.3 | 2.9 | ||
100 | 0.016 | 0.54 | 3.5 | 3.5 | ||
2 | Xerogel | 1 | 0.040 | 0.55 | 2.8 | 3.5 |
10 | 0.044 | 0.56 | 2.9 | 3.4 | ||
100 | 0.016 | 0.62 | 3.7 | 3.1 | ||
3 | Gel | 1 | 0.045 | 0.58 | 2.8 | 3.3 |
10 | 0.016 | 0.57 | 3.6 | 3.3 | ||
4 | MWT Xerogel | 1 | 0.141 | 0.73 | 2.6 | 2.6 |
10 | 0.034 | 0.49 | 2.7 | 3.9 | ||
100 | 0.076 | 0.78 | 3.1 | 2.5 | ||
5 | MWT gel | 1 | 0.029 | 0.38 | 2.1 | 5.0 |
10 | 0.029 | 0.55 | 3.1 | 3.5 | ||
6 | MChT gel | 1 | 0.011 | 0.36 | 3.1 | 5.3 |
10 | 0.006 | 0.62 | 4.4 | 3.1 |
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Janusz, W.; Skwarek, E.; Sydorchuk, V.; Khalameida, S. Adsorption of Ag (I) Ions at the Zirconium Phosphate/KNO3 Aqueous Solution Interface. Materials 2022, 15, 5050. https://doi.org/10.3390/ma15145050
Janusz W, Skwarek E, Sydorchuk V, Khalameida S. Adsorption of Ag (I) Ions at the Zirconium Phosphate/KNO3 Aqueous Solution Interface. Materials. 2022; 15(14):5050. https://doi.org/10.3390/ma15145050
Chicago/Turabian StyleJanusz, Władysław, Ewa Skwarek, Volodymyr Sydorchuk, and Svitlana Khalameida. 2022. "Adsorption of Ag (I) Ions at the Zirconium Phosphate/KNO3 Aqueous Solution Interface" Materials 15, no. 14: 5050. https://doi.org/10.3390/ma15145050