AP26195783 «Scientific foundations for developing highly selective polymer systems and sorbents for the recovery of various ions from technological solutions»

Name of the Project with IRN number

AP26195783 «Scientific foundations for developing highly selective polymer systems and sorbents for the recovery of various ions from technological solutions»

Relevance/Abstract

The project aims to establish the scientific foundations for developing highly selective polymer sorbents designed to extract ions of various types from technological solutions. This advancement will enhance the processing of multicomponent hydrometallurgical solutions. The initiative addresses the challenge of inadequate efficiency in existing methods for extracting rare earth and other valuable metals, which often results in component losses and diminished processing effectiveness. A primary concern is the low selectivity and efficiency of traditional sorbents currently employed in hydrometallurgy. These materials necessitate significant enhancements to achieve selective extraction of metal ions from multicomponent solutions. The project focuses on leveraging the phenomenon of "remote interaction" among polymers to improve the sorption activity and selectivity of materials by inducing spatial changes in the structure of polymer chains.

Purpose (according to application)

The development of scientific foundations for highly selective polymer sorbents for effective ion extraction from technological solutions depends on studying sorption mechanisms and polymer structure. Selectivity and efficiency are enhanced through the «remote interaction» effect, in which polymer polymer chains are activated by mutual action, which contributes to the necessary spatial distribution of functional groups in polymers and optimization of their structure for selective binding of target ions. This approach will not only improve the sorption characteristics of materials, but also increase the efficiency of the extraction of valuable components, reducing their losses during the processing of technological solutions.

Expected results

The electrochemical and volumetric-hydrodynamic properties of crosslinked polyelectrolytes will be investigated depending on their molecular characteristics during remote interaction in an aqueous medium. The effect of molar ratios of components on the electrochemical properties of crosslinked polyelectrolytes will be studied. The key factors influencing the charge of ionites and their ability to interact with ions of various natures will be determined. The effect of time on the conformational state of the interstitial chains of crosslinked polyelectrolytes will be investigated. Optimal synthesis conditions for the formation of structures with high sorption selectivity will be determined. The structures of activated polyelectrolytes will be determined when external conditions change (temperature, concentration of solutions, ionic strength of the medium, the presence of impurities and other factors). The sorption characteristics of polyelectrolytes in interaction with ions of various natures will be investigated. Gravimetric and sorption characteristics of polyelectrolytes will be investigated and the influence of their composition and conformation of polymer chains on the ion sorption process will be evaluated. The effect of the ionic strength of the solution on the sorption properties of polyelectrolytes and activated ionites will be studied. Optimal conditions for maximum sorption efficiency will be determined. Thermodynamic characteristics of sorption processes will be determined. The sorption equilibrium and kinetics of polymer-ion interaction will be studied, and the thermodynamic parameters characterizing the energy costs of sorption will be evaluated.Modified sorbents with increased selectivity and sorption capacity will be developed for the effective extraction of ions of various natures from solutions. The influence of the degree of crosslinking of polyelectrolytes on their sorption characteristics will be investigated. The relationship between the degree of crosslinking and the selectivity of sorbents will be evaluated. The effect of polyelectrolyte activation on the sorption mechanism of low molecular weight ions will be studied. The optimal degree of activation will be determined to increase the sorption efficiency. The effect of the mixing rate of solutions on the sorption properties of polyelectrolytes will be determined. Dynamic and static modes will be investigated to improve the efficiency of sorption processes.

List of full names of research team members with their identifiers (Scopus Author ID, Researcher ID, ORCID, if available) and links to relevant profiles

1. Jumadilov Talkybek

Researcher ID: K-3034-2019; ORCID: https://orcid.org/0000-0001-9505-3719; Scopus Author ID: 57192254176

2. Imangazy Aldan

Researcher ID: N-5318-2016; ORCID: https://orcid.org/0000-0001-7834-1022; Scopus Author ID: 57207618185

3. Khimersen Khuangul

Researcher ID: AAM-3877-2021; ORCID: https://orcid.org/0000-0002-5138-5997; Scopus Author ID: 57226158003

4. Kabulova Madina

ORCID: https://orcid.org/0009-0007-7059-5635

5. Gali Gulbakyt

ORCID: https://orcid.org/0009-0006-5981-5871