Жарияланымдар / Публикации
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- Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Features of the extraction of yttrium and lanthanum with an intergel systembased on hydrogels of polyacrylic acid and poly-4-vinylpyridine(2020-03-30); ; ; ; Talkybek JumadilovFeatures of the extraction of yttrium and lanthanum with an intergel system based on hydrogels of polyacrylic acid and poly-4-vinylpyridineTo predict the sorption activity and selectivity of hydrogels, the effect of mutual activation of polymer networks in the intergel system was studied.The intergel system of the hydrogel of polyacrylic acid ((hPAA)) and the hydrogel of poly-4-vinylpyridine (hP4VP), which was studied at a distance through the volume of the solvent in the absence of direct contact between the polymer networks, were chosen as the object of study.Intergel systems have been investigated using methods for measuring electrical conductivity, pH, and gravimetry.The mutual activation of La 3+ and Y 3+ ions with the intergel system in an aqueous medium was also studied.It has been established that as a result of the remote interaction of the studied hydrogels, their mutual activation occurs, leading to a significant change in their electrochemical and conformational properties.At certain ratios of acidic and basic hydrogels, a significant increase in the sorption of lanthanum and yttrium ions is observed in comparison with the initial hydrogels.These results indicate the appearance of ionized structures with optimal conformation, providing an optimal ligand environment around lanthanum and yttrium ions.Цитирования (OpenAlex) 5Цитирования (OpenCitations) 2 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, SELECTIVITY OF INTERPOLYMER SYSTEMS WITH RESPECT TO LANTHANUM IONS(2021-03-14); ; ; The paper deals with the sorption of lanthanum ions by an interpolymer system consisting of sulfonic cation exchanger KU2-8 and anion exchanger AV-17-8. To predict the sorption activity of the intergel system, the mutual activation of the KU2-8 sulfonic cationite with the AV-17-8 anionite in the aqueous medium was initially studied. Due to the mutual activation of hydrogels in the course of their remote interaction, the polymer macromolecules pass into a highly ionized state, which leads to a significant increase in the degree of extraction of lanthanum ions from polymer hydrogels in intergel vapors as compared to the initial polymers. We calculated the degree of extraction of lanthanum ions by the interpolymer system KU2-8: AV-17-8, the degree of binding of the polymer chain (in relation to lanthanum ions) with the initial ion exchangers and the interpolymer system KU2-8: AV-17-8. Based on the data obtained, a comparative analysis of the sorption of lanthanum ions by individual sorbents and an interpolymer system was carried out within the limits of the ratio KU2-8: AV-17-8 = 5: 1–1: 5. It has been established that the maximum degree of sorption of lanthanum ions by the KU2-8: AV-17-8 interpolymer system is observed within the ratio KU2-8: AV-17-8 = 2: 4 at 48 hours of remote interaction of the interpolymer system and is 54.73 mol. %, at which the degree of binding of the polymer chain is 6.15% - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Ion Exchange Dynamics in Cerium Nitrate Solution Regulated by Remotely Activated Industrial Ion Exchangers(Multidisciplinary Digital Publishing Institute, 2021-06-23); Цитирования (OpenAlex) 21Цитирования (OpenCitations) 21 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Effective Sorption of Europium Ions by Interpolymer System Based on Industrial Ion-Exchanger Resins Amberlite IR120 and AB-17-8(Multidisciplinary Digital Publishing Institute, 2021-07-09); Kondaurov Ruslan GennadievichThe research is aimed at checking the impact of a remote interaction phenomenon on growth of sorption properties of ion-exchange resins during sorption of europium ions. Industrial ion exchangers Amberlite IR120 and AB-17-8 were selected as objects for the study. Investigation was undertaken using the following physico-chemical methods of analysis: conductometry, pH-metry, colorimetry, Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and atomic emission spectroscopy. Remote interaction of the initial ion exchangers in the interpolymer system leads to their transition into highly ionized state due to formation of optimal conformation. Found that high ionization areas of Amberlite IR120 and AB-17-8 are the molar ratios Amberlite IR120:AB-17-8 = 4:2 and 1:5. The remote interaction effect provides significant increase of the following sorption properties: sorption degree, polymer chain binding degree, effective dynamic exchange capacity. A strong increase of the sorption properties (average increase for all time of remote interaction is over 50%) in the interpolymer system Amberlite IR120-AB-17-8 was observed with individual polymer structures of Amberlite IR120 and AB-17-8. The remote interaction phenomenon can be successfully used for effective modification of industrial ion exchangers for sorption of rare-earth metals.Цитирования (OpenAlex) 7Цитирования (OpenCitations) 6 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Specific features of praseodymium extraction by intergel system based on polyacrylic acid and poly-4-vinylpyridine hydrogels(2021-09-27); ; А. М. ImangazySome technological solutions contain valuable components and can become an additional source of rare-earth elements to satisfy the current production demands. This research provides the study on using a combination of polyacrylic acid hydrogel (hPAA) and hydrogel of poly-4-vinylpyridine (hP4VP) in different molar ratios for praseodymium ions sorption from its nitrate solution. The mutual activation of the hydrogels in an aqueous medium provides their transformation into a highly ionized state by the conformational and electrochemical changes in properties during their remote interaction. The electrochemical properties of solutions were studied by the methods of electrical conductivity, and pH measurements of the solutions. The research showed that the maximum activation of hydrogels was revealed within the molar ratio of hPAA:hP4VP equal to 1:5. Moreover, the total praseodymium ions sorption degree after 24 hours of sorption by individual hPAA and hP4VP was 54 % and 47 %, respectively, whereas the praseodymium ions sorption degree by the hPAA–hP4VP intergel system in the molar ratio 1:5 became 62 %. A slight increase in the sorption degree of praseodymium ions by the intergel system in comparison with individual hydrogels can be explained by the achievement of a higher ionization degree of hydrogels being activated in the hPAA–hP4VP interpolymer system by the remote interaction effect.Цитирования (OpenAlex) 9Цитирования (OpenCitations) 9 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Impact of Neodymium and Scandium Ionic Radii on Sorption Dynamics of Amberlite IR120 and AB-17-8 Remote Interaction(Multidisciplinary Digital Publishing Institute, 2021-09-18); ; Цитирования (OpenAlex) 14Цитирования (OpenCitations) 9 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Anomalous Sorption of Neodymium and Praseodymium Ions by Intergel System Polyacrylic Acid Hydrogel – Poly-4-Vinylpyridine Hydrogel(Lviv Polytechnic National University, 2022-02-10)Цитирования (OpenAlex) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Comparative Characteristics of Polymethacrylic Acid Hydrogel Sorption Activity in Relation to Lanthanum Ions in Different Intergel Systems(Lviv Polytechnic National University, 2022-09-30); ; Цитирования (OpenAlex) 2Цитирования (OpenCitations) 4 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Anomalous Sorption of Yttrium Ions by the Mutual Activated Hydrogels in the Interpolymer System of Poly(Methacrylic Acid) and Poly(4-Vinylpyridine)(Lviv Polytechnic National University, 2023-03-26); Цитирования (OpenAlex) 8Цитирования (OpenCitations) 5 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, FEATURES OF SORPTION OF CERIUM IONS BY THE INTERPOLYMER SYSTEM BASED ON AMBERLITE IR120 AND AB-17–8 ION-EXCHANGE RESINS(National Academy of Sciences of the Republic of Kazakhstan, 2023-03-31); Many technological solutions contain valuable components as waste and can become an additional source of rare earth elements to meet the needs of modern production. The development of technologies based on commercially available and cheap sorbents opens up the possibility of extracting rare earth elements from various solutions. The aim of this work is to study the effect on the process of sorption of cerium ions from the corresponding sulfates by individual Amberlite IR120, AB-17-8 ion exchangers and an interpolymer system based on them. The experiments were carried out using the following physicochemical methods of analysis: conductometry, pH-metry, colorimetry, and atomic emission spectroscopy. Ion exchangers in the interpolymer system undergo remote interaction with a further transition to a highly ionized state. An optimal conformation is formed in the structure of the initial ion exchangers. A significant increase in the ionization of ion exchange resins occurs at a molar ratio of Amberlite IR120:AB-17-8 = 3:3. With this ratio, a significant increase in sorption properties is observed due to the mutual activation of ion exchangers. The average increase in the sorption properties of cerium ions in the Amberlite IR120:AB-17-8 = 3:3 interpolymer system is more than 85% compared to Amberlite IR120 and almost 70% compared to AB-17-8. A possible reason for the high sorption is the maximum correspondence between the globes of the interlayer chain of Amberlite IR120 and AB-17-8 bond ions after their mutual activation in an aqueous medium.