Intergel systems: Highly effective instruments for rare earth elements extraction from industrial solutions

In the present study, a novel functionalized silica composite was prepared by adsorption of poly[8 oxyquinoline methacrylate] on the surface of silica gel. Immobilization of poly[8 oxyquinoline methacrylate] on the silica gel surface was confirmed using IR spectroscopy and thermogravimetric analysis combined with mass spectrometry. Scanning electron microscopy revealed that the polymer almost completely covers the surface of the silica gel in the form of agglomerates of different geometric shapes. The processes of sorption of Cu(II), Cd(II), Pb(II), and Fe(III) ions on the surface of the synthesized composite in the static mode have been studied.

Section: The Methodology Of Yttrium Ions Determinationmentioning

confidence: 99%

Synthesis, Sorption Properties, and Evaluation of Silica Gel with Adsorbed Poly[8-Oxyquinoline Methacrylate] as a Sorbent for Cu(II), Cd(II), Pb(II) and Fe(III) Ions

Savchenko¹,

Yanovska²,

Sternik³

et al. 2023

“…Methodology of erbium ions determination based on formation of colored complexed compound of organic analytic reagent Arsenazo III with erbium ions [13].…”

Section: Methodology Of Erbium Ions Determinationmentioning

confidence: 99%

“…Interactions between different types of hydrogels are much less investigated than hydrogels themselves; one can find only individual reports on this research [9,13]. Besides, cited articles [9,13] are devoted to contact interactions of hydrogels. Now we report about sufficiently new phenomena, which demonstrate possibility of electrochemical interactions between samples placed at quite long distance from each other.…”

mentioning

confidence: 99%

Phenomenon of Remote Interaction and Sorption Ability of Rare Cross-linked Hydrogels of Polymethacrylic Acid and Poly-4-vinylpyridine in Relation to Erbium Ions

Jumadilov¹,

Kondaurov²,

Imangazy³

et al. 2019

1 Phenomenon of the long-range effect of poly(methacrylic acid) hydrogelpoly(4-vinylpyridine) hydrogel (gPMAA-gP4VP intergel system) оn erbium ions sorption was studied. It was established that the structure of the basic hydrogel had a significant impact on the self-organization of the PMAA hydrogel. The mutual activation of hydrogels was investigated in an aqueous medium. Dependencies of swelling coefficient, specific electric conductivity and pH of aqueous solutions were determined. Individual PMAA and P4VP hydrogels showed the erbium ions extraction degree of about 44 % and 17 %, respectively. At the ratios 5:1 (83 % of gPMAA-17 % gP4VP) and 4:2 (67 % gMPAA-33 % gP4VP), 56 % and 53 % of erbium ions were recovered, respectively. After 48 h the PMAA and P4VP hydrogels had the polymer chain binding degree of 70 %. The obtained results point to the evidence that at these ratios there are significant changes in electrochemical and conformational degrees of initial macromolecules in gPMAA-gP4VP intergel system.

“…The result is an increased sorption capacity in the comparison with individual hydrogels. [34][35][36] Intergel system is represented in Fig. 1.…”

Section: +mentioning

confidence: 99%

Comparative Characteristics of Polymethacrylic Acid Hydrogel Sorption Activity in Relation to Lanthanum Ions in Different Intergel Systems

Jumadilov¹,

Malimbayeva²,

Yskak³

et al. 2022

Phenomena of remote interaction in intergel systems polymethacrylic acid hydrogel – poly-4-vinylpyridine hydrogel (hPMAA-hP4VP) and polymethacrylic acid hydrogel – poly-2-methyl-5-vinylpyridine hydrogel (hPMAA-hP2M5VP) have been studied. It was found that there is a decrease of specific electric conductivity, pH and swelling degree of PMAA, P4VP, P2M5VP hydrogels during lanthanum ions sorption by the intergel systems. Significant increase of sorption properties (up to 30 %) in intergel systems comparatively with individual hydrogels of PMAA, P4VP, P2M5VP points to the fact of high ionization during mutual activation of the polymers. Maximum sorption of lanthanum ions occurs at the ratios of 17%hPMAA:83%hP4VP and 50%hPMAA:50%hP2M5VP. Data on obtained IR spectra evidence to the sorption of the rare-earth metal by these intergel systems. The obtained results show a significant importance of possible application of intregel systems based on rare-crosslinked polymer hydrogels of acid and basic nature for creation of new innovative sorption technologies in hydrometallurgy.