Synthesis of porous resorcinol-formaldehyde resins and study of their sorption characteristics toward Cs in highly mineralized alkaline media
-
Andrei Egorin
,
Eduard Tokar
Abstract
The present work was devoted to study of sorption parameters of resorcinol-formaldehyde resins synthesized through introduction of an inorganic filler (in amounts of 10 and 25 wt.%) with its subsequent leaching. The surface morphology and composition of ion-exchange resins have been investigated by means of the method of scanning electron microscopy. The effect of internal diffusion on the peculiarities of the ion-exchange process has been determined. It has been revealed that the ion-exchangers destruction upon a prolonged contact with highly alkaline solutions is followed by the decrease of internal diffusion coefficients and selectivity toward Cs-137 micro-quantities. The sorption properties of resins under dynamic conditions at high solution feeding rates have been studied. A sample with the highest efficiency of Cs-137 removal from highly mineralized solutions has been identified.
Acknowledgements
The devices of the Center of Collective Use of Scientific Equipment “Far Eastern Center of Structural Investigations” was used in the present work. This work was supported by Russian Science Foundation (project No. 18-73-10066).
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©2019 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Dependence of UO2 surface morphology on processing history within a single synthetic route
- Novel diamide ligands with a central carbonyl group and their comparative evaluation with the diglycolamide ligand: synthesis, extraction, DFT and chromatographic studies
- Synthesis of porous resorcinol-formaldehyde resins and study of their sorption characteristics toward Cs in highly mineralized alkaline media
- Leaching of 137Cs from Chernobyl fuel debris: corium and “lava”
- Retention behavior of anionic radionuclides using metal hydroxide sludge
- Synthesis, thermogravimetric analysis and enthalpy determination of lanthanide β-diketonates
- 99mTc(I) carbonyl-radiolabeled lipid based drug carriers for temozolomide delivery and bioevaluation by in vitro and in vivo
- FLUKA simulation yields in a comparison with theoretical and experimental yields relevant to 89Zr produced in the 89Y(p,n) reaction
- Rapid Communication
- 225Ac/213Bi generator based on inorganic sorbents
Artikel in diesem Heft
- Frontmatter
- Dependence of UO2 surface morphology on processing history within a single synthetic route
- Novel diamide ligands with a central carbonyl group and their comparative evaluation with the diglycolamide ligand: synthesis, extraction, DFT and chromatographic studies
- Synthesis of porous resorcinol-formaldehyde resins and study of their sorption characteristics toward Cs in highly mineralized alkaline media
- Leaching of 137Cs from Chernobyl fuel debris: corium and “lava”
- Retention behavior of anionic radionuclides using metal hydroxide sludge
- Synthesis, thermogravimetric analysis and enthalpy determination of lanthanide β-diketonates
- 99mTc(I) carbonyl-radiolabeled lipid based drug carriers for temozolomide delivery and bioevaluation by in vitro and in vivo
- FLUKA simulation yields in a comparison with theoretical and experimental yields relevant to 89Zr produced in the 89Y(p,n) reaction
- Rapid Communication
- 225Ac/213Bi generator based on inorganic sorbents
