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Determination of Conditions for Selective Sorption of Silver(I) on Thiocarbamoylated Polyethylene

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1. Title Title of document Determination of Conditions for Selective Sorption of Silver(I) on Thiocarbamoylated Polyethylene
2. Creator Author's name, affiliation, country E. A. Melnik; UNIIM – Affiliated Branch of the D. I. Mendeleyev Institute for Metrology; Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU); Russian Federation
2. Creator Author's name, affiliation, country Y. S. Petrova; UNIIM – Affiliated Branch of the D. I. Mendeleyev Institute for Metrology; Russian Federation
2. Creator Author's name, affiliation, country L. К. Neudachina; Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU); Russian Federation
2. Creator Author's name, affiliation, country A. V. Pestov; Ural Federal University named after the first President of Russia B.N. Yeltsin (UrFU); I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the Russian Academy of Sciences; Russian Federation
2. Creator Author's name, affiliation, country V. A. Osipova; I.Ya. Postovsky Institute of Organic Synthesis of the Ural Branch of the Russian Academy of Sciences; Russian Federation
3. Subject Discipline(s)
3. Subject Keyword(s) solid-phase extraction; selective extraction; polyethylene; thiourea, silver
4. Description Abstract

Sorption properties of thiocarbamoylated polyethylene with respect to silver(I) from multicomponent solutions have been studied. It was found that the synthesized sorbent is characterized by a high sorption capacity and selectivity with respect to silver ions. In the static sorption mode, quantitative extraction is possible from solutions with a concentration of Ag(I) 1 · 10–4 mol/dm3 in the pH range from 1 to 7, with concomitant Ca(II), Mg(II), Cu(II), Fe(III), Zn(II), Cd(II), Ni(II), Mn(II), Co(II), Pb(II) have no effect on the degree of extraction of silver ions. The high selectivity of sorption is maintained under dynamic conditions in the presence of excessive amounts of base metal ions at pH 2. The total dynamic sorption capacity for silver is 0.35 mmol/g (solution transmission rate 2 cm3/min, pH 2, sorbent weight 0.1 g, C = 1 · 10–4 mol/dm3). The composition of the eluents providing the highest values of the degree of desorption of silver from the surface of the sorbent has been determined. It was found that during sorption using a sorbent after the sorption-desorption stage, its silver capacity decreases slightly.

5. Publisher Organizing agency, location The Russian Academy of Sciences
6. Contributor Sponsor(s) Ministry of Science and Higher Education of the Russian Federation
7. Date (DD-MM-YYYY) 15.06.2024
8. Type Status & genre Peer-reviewed Article
8. Type Type Research Article
9. Format File format
10. Identifier Uniform Resource Identifier https://rjonco.com/0044-457X/article/view/666500
10. Identifier Digital Object Identifier (DOI) 10.31857/S0044457X24060116
10. Identifier eLIBRARY Document Number (EDN) XTDEGO
11. Source Title; vol., no. (year) Žurnal neorganičeskoj himii; Vol 69, No 6 (2024)
12. Language English=en ru
13. Relation Supp. Files Supplement (222KB)
Fig. 1. The effect of the acidity of the medium on the sorption of silver ions from a multicomponent system. 1 – C = = 1 × 10-4 mol/l, C = 4 × 10-4 mol/L; 2 – C = = 1 × 10-4 mol/L, C = 1 × 10-4 mol/l; msorbent = = 0.0100 g, d < 0.071 mm. (67KB)
Fig. 2. Silver sorption isotherm(I) – and the results of its processing by mathematical models. C = 1 × × 10-4 mol/l; msorbent = 0.0100 g, d < 0.071 mm, pH 2. (215KB)
3. Dynamic output curves of metal ion sorption on thiocarbamoylated polyethylene: msorbent = = 0.1000 g (1), 0.0500 g (2); 0.0100 g (3); C = 1 × 10-4 mol/l; C = 8 × 10-4 mol/l; 0.125 mm > d > 0.100 mm, the transmission rate of the model solution is 2 cm3/min, pH 2. (171KB)
Fig. 4. Dependence of the degree of silver extraction(I) on the volume of the passed solution, sorbent = 0.1 g (a), 0.05 g (b). 1 – the first sorption cycle; 2 – the second sorption cycle; 3 – the third sorption cycle. C = 1 × 10-4 mol/l; C = 8 × × 10-4 mol/l; 0.125 mm > d > 0.100 mm, the transmission rate of the model solution is 2 cm3/min, pH 2. (282KB)
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
15. Rights Copyright and permissions Copyright (c) 2024 Russian Academy of Sciences