Separation of Ag and Cu from Their Aqueous Thiosulfate Complexes by UV-C Irradiation
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Procedure
2.3. Analytical Methods
3. Results and Discussions
3.1. Photosensitivity of Ag Thiosulfate Complexes
3.1.1. Photolysis of Ag–Thiosulfate Complexes by UV-C Irradiation
3.1.2. The Characterization of Ag–Thiosulfate Complexes Photoproducts
3.2. Photosensitivity of Cu Thiosulfate Complexes
3.2.1. Photolysis of Cu–Thiosulfate Complexes by UV-C Irradiation
3.2.2. The Characterization of Cu–Thiosulfate Complexes Photoproducts
3.3. Separation of Ag and Cu by UV-C Irradiation
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Methods | Research Target | Results | Advantages | Disadvantages | Ref. |
---|---|---|---|---|---|
Solvent extraction (extractant: LIX 63 and Alamine 336; stripping agent: HCl) | Chloride leach solution of anode slimes | Above 99% of Cu(II) and most of Ag(I) extracted | Highly selective and easy to industrialize | Limited to cation system, needs stripping | [11] |
Ion exchange removal (ion exchange synthesized by Purolite UK) | Thiosulfate complex solution | Purolite A530 has the best properties towards Ag and Au | With regeneration capacity and simple device | Limited to purified exchange capacity | [12] |
Emulsion liquid membrane system (Cyanex 302) | Liquid photographic waste | Almost complete recovery of silver | High selectivity, simultaneous extraction and separation | Liquid membrane instability | [13] |
Silver Concentration/mg/L | k/min−1 | Goodness of Fit |
---|---|---|
100 | 0.00210 | 0.99305 |
300 | 0.00176 | 0.99864 |
500 | 0.00141 | 0.99679 |
Copper Concentration/mg/L | k/min−1 | Goodness of Fit |
---|---|---|
50 | 0.00149 | 0.985 |
75 | 0.00130 | 0.997 |
100 | 0.00101 | 0.986 |
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Han, C.; Wang, G.; Zou, M.; Shi, C. Separation of Ag and Cu from Their Aqueous Thiosulfate Complexes by UV-C Irradiation. Metals 2019, 9, 1178. https://doi.org/10.3390/met9111178
Han C, Wang G, Zou M, Shi C. Separation of Ag and Cu from Their Aqueous Thiosulfate Complexes by UV-C Irradiation. Metals. 2019; 9(11):1178. https://doi.org/10.3390/met9111178
Chicago/Turabian StyleHan, Chao, Guangxin Wang, Mingjin Zou, and Chaoyang Shi. 2019. "Separation of Ag and Cu from Their Aqueous Thiosulfate Complexes by UV-C Irradiation" Metals 9, no. 11: 1178. https://doi.org/10.3390/met9111178
APA StyleHan, C., Wang, G., Zou, M., & Shi, C. (2019). Separation of Ag and Cu from Their Aqueous Thiosulfate Complexes by UV-C Irradiation. Metals, 9(11), 1178. https://doi.org/10.3390/met9111178