Journal
CHEMPLUSCHEM
Volume 88, Issue 5, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.202300103
Keywords
catecholamides; chelation; resins; sorbent polymers; uranium extraction
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This study reports the synthesis of formo-phenolic resins with catecholamide moieties for selective extraction of U(VI) from seawater. The synthesized materials showed good sorbent properties and a pronounced selectivity for uranium, even under saline conditions. Thermodynamic and kinetic adsorption data were determined for the best resin using the Langmuir adsorption model and pseudo-second order model.
This work reports the synthesis of formo-phenolic resins containing four catecholamide (CAM) moieties with admixture of phenol, catechol or resorcinol. These chelating resins have been developed to selectively extract U(VI) from seawater. This media is a challenging environment due to a pH around 8.2 and a large excess of alkaline and earth-alkaline cations. From the various sorption experiments investigated, the results indicate that the synthesized material exhibit good sorbent properties for U(VI) with uptake capacity about 50 mg/g for the more promising resins with a pronounced selectivity for uranium even under saline conditions. Thermodynamic and kinetic adsorption data were determined for the best resin (Langmuir adsorption model and pseudo-second order model).
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