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Porous Resorcinol-Formaldehyde Resins

1
Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, 690022 Vladivostok, Russia
2
Far Eastern Federal University, Sukhanova str., 8, 690000 Vladivostok, Russia
*
Author to whom correspondence should be addressed.
Colloids Interfaces 2019, 3(1), 7; https://doi.org/10.3390/colloids3010007
Received: 10 November 2018 / Revised: 24 December 2018 / Accepted: 24 December 2018 / Published: 30 December 2018
Porous ion-exchanging resorcinol-formaldehyde resins were prepared by removing an inorganic template (CaCO3) and by polymerization of a highly concentrated emulsion with toluene as a dispersing phase. As compared to original resorcinol-formaldehyde resins, the porous one is characterized with higher values of internal diffusion, providing exceptional purification coefficients. However, the amounts of the introduced CaCO3 and toluene have to be below 10 wt.% and 25 wt.%, respectively, to avoid fast degradation of the ion-exchanger. Under dynamic conditions, average purification coefficients in the model solution of Cs-137 are twice higher than those of the non-porous sample. The prepared porous ion-exchange resin can be used in cases when high Cs-137 uptake from liquid media should be realized at increased rates of solution percolation. View Full-Text
Keywords: Resorcinol-formaldehyde resin; polycondensation; sorption; liquid radioactive wastes; radionuclides; Cs-137 Resorcinol-formaldehyde resin; polycondensation; sorption; liquid radioactive wastes; radionuclides; Cs-137
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Egorin, A.; Tokar, E.; Tutov, M.; Portnyagin, A. Porous Resorcinol-Formaldehyde Resins. Colloids Interfaces 2019, 3, 7.

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