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- Title
Recovery of Zn(II) from Simulated Liquid Waste Using Poly(Vinyl Alcohol-Acrylamide) Synthesized by Gamma Radiolysis Method.
- Authors
Massoud, A.; Mahmoud, H. H.
- Abstract
The recovery of enriched Zn-68 is extremely important in the production of short-lived isotope (Ga-67) in the Cyclotron because of its high price. A high amount of Zn-68 is produced during the production of Ga-67 from its target (Zn-target) by a solvent extraction technique. In this investigation, we successfully prepared poly(vinyl alcohol-t-acrylamide), P(VA-t-AM) resin using the gamma radiolysis technique. The characterization of pristine PVA and synthesized P(VA-t-AM) was performed to confirm their structures. The produced polymer was tested for the elimination of Zn2+ ions from simulated liquid waste as produced during the production of the Ga-67. To get the highest uptake of Zn2+ ions on the polymer, various parameters such as solution pH, polymer weight, and contact time were applied. The loading Zn2+ ions were studied at optimum conditions of the Batch approach. Then, the retrieval of Zn2+ ions from the packed chromatographic column was tested using different parameters such as flow rates, bed depths, and initial concentration of Zn2+. The results indicated that the percentages of loaded Zn2+ ions on the packed column were 96.94% at the best operational conditions. Moreover, different eluents were applied to the retrieval of Zn2+ ions from the P(VA-t-AM) column, and the data confirmed that the retrieval percentage of Zn2+ ions from P(VA-t-AM) was 98.43% at the optimum. The reusability of the working polymer was examined for eight cycles. This paper recommended that the synthesized P(VA-t-AM) can be utilized for the retrieval of Zn2+ ions from the spent Zn-68 target in the Cyclotron.
- Subjects
LIQUID waste; RADIOLYSIS; PACKED towers (Chemical engineering); SOLVENT extraction; POLYMER testing
- Publication
Journal of Polymers & the Environment, 2023, Vol 31, Issue 11, p4960
- ISSN
1566-2543
- Publication type
Article
- DOI
10.1007/s10924-023-02910-1