Colloid-Chemical Properties of Surfactant–Nitric Acid–Water Systems
Электронный научный архив УРФУ
Информация об архиве | Просмотр оригинала| Поле | Значение | |
| Заглавие |
Colloid-Chemical Properties of Surfactant–Nitric Acid–Water Systems
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| Автор |
Danilin, L. M.
Lugovitskaya, T. N. Kolmachikhina, E. B. Rogozhnikov, D. A. |
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| Тематика |
NITRIC ACID
SURFACTANTS SURFACE TENSION MICELLIZATION LEACHING |
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| Описание |
The surfactants (Tween 80, SaS, Alkyl betaine) used in our work are suitable and very promising additives for intensifying atmospheric nitric acid leaching of hard-to-process ores.
The proposed surfactants demonstrate an increase in surface activity in a nitric acid environment. Received: 05.10.23. Revised: 29.10.23. Accepted: 30.10.23. Available online: 03.11.23. The behavior of the surfactants Tween 80, SaS and alkyl betaine in aqueous and nitric acid environments as promising additives for nitrate leaching of hard-to-process ore concentrates of non-ferrous metals was studied. The influence of surfactant concentration (0.04–1.28 g/dm3), nitric acid concentration (0.1–10 g/dm3) and temperature (295–343 K) on the surface tension, critical micelle concentration (CMC), pH and optical density of aqueous surfactant solutions and surfactant–HNO3–H2O systems was found. The critical micelle concentration of the surfactants used was estimated. A positive effect of nitric acid on the surface activity of surfactants was discovered, which manifests itself in a decrease in both the CMC and the surface tension at the liquid–gas interface. The values of surface activity and Gibbs energy of surfactant micelle formation in aqueous and nitric acid media were calculated. Associative processes in the solutions and compositions were confirmed by measuring the optical density of the systems under study. The study was carried out within the framework of the Russian Science Foundation (Project No. 22-79-10290), https://www.rscf.ru/project/22-79-10290/. The analytical studies were carried out with financial support of the State Task of the Russian Federation under Grant No. 075-03-2021-051/5 (FEUZ-2021-0017). |
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| Дата |
2024-01-18T12:45:22Z
2024-01-18T12:45:22Z 2023 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
Colloid-Chemical Properties of Surfactant–Nitric Acid–Water Systems / L. M. Danilin, T. N. Lugovitskaya, E. B. Kolmachikhina, D. A. Rogozhnikov // Chimica Techno Acta. — 2023. — Vol. 10, No. 4. — № 202310408.
2411-1414 http://elar.urfu.ru/handle/10995/129326 https://www.elibrary.ru/item.asp?id=60040548 10.15826/chimtech.2023.10.4.08 |
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| Язык |
en
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| Связанные ресурсы |
Chimica Techno Acta. 2023. Vol. 10. № 4
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| Формат |
application/pdf
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| Издатель |
Уральский федеральный университет
Ural Federal University |
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