Colloid-chemical properties of surfactant–nitric acid–water systems
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 concentr...
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| Format: | Article |
| Language: | English |
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Ural Federal University
2023-11-01
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| Series: | Chimica Techno Acta |
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| Online Access: | https://chimicatechnoacta.ru/article/view/7121 |
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| _version_ | 1850238077170089984 |
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| author | Lev Danilin Tatyana Lugovitskaya Elvira Kolmachikhina Denis Rogozhnikov |
| author_facet | Lev Danilin Tatyana Lugovitskaya Elvira Kolmachikhina Denis Rogozhnikov |
| author_sort | Lev Danilin |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-313c7fe7732846478584a85c641fec9c |
| institution | OA Journals |
| issn | 2411-1414 |
| language | English |
| publishDate | 2023-11-01 |
| publisher | Ural Federal University |
| record_format | Article |
| series | Chimica Techno Acta |
| spelling | doaj-art-313c7fe7732846478584a85c641fec9c2025-08-20T02:01:34ZengUral Federal UniversityChimica Techno Acta2411-14142023-11-0110410.15826/chimtech.2023.10.4.085058Colloid-chemical properties of surfactant–nitric acid–water systemsLev Danilin0Tatyana Lugovitskaya1Elvira Kolmachikhina2Denis Rogozhnikov3Ural Federal UniversityUral Federal UniversityUral Federal UniversityUral Federal UniversityThe 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.https://chimicatechnoacta.ru/article/view/7121nitric acidsurfactantssurface tensionmicellizationleaching |
| spellingShingle | Lev Danilin Tatyana Lugovitskaya Elvira Kolmachikhina Denis Rogozhnikov Colloid-chemical properties of surfactant–nitric acid–water systems Chimica Techno Acta nitric acid surfactants surface tension micellization leaching |
| title | Colloid-chemical properties of surfactant–nitric acid–water systems |
| title_full | Colloid-chemical properties of surfactant–nitric acid–water systems |
| title_fullStr | Colloid-chemical properties of surfactant–nitric acid–water systems |
| title_full_unstemmed | Colloid-chemical properties of surfactant–nitric acid–water systems |
| title_short | Colloid-chemical properties of surfactant–nitric acid–water systems |
| title_sort | colloid chemical properties of surfactant nitric acid water systems |
| topic | nitric acid surfactants surface tension micellization leaching |
| url | https://chimicatechnoacta.ru/article/view/7121 |
| work_keys_str_mv | AT levdanilin colloidchemicalpropertiesofsurfactantnitricacidwatersystems AT tatyanalugovitskaya colloidchemicalpropertiesofsurfactantnitricacidwatersystems AT elvirakolmachikhina colloidchemicalpropertiesofsurfactantnitricacidwatersystems AT denisrogozhnikov colloidchemicalpropertiesofsurfactantnitricacidwatersystems |