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Updated: Jun 11, 2025

Synthesis of High Purity Nonsymmetric Dialkylphosphinic Acid Extractants
Published on: October 19, 2017
Carbon materials for effective purification of aqueous solutions from tributyl phosphate
Tamuna Bakhiia1, Andrey Toropov1, Iurii Nevolin2
1Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow, 119991, Russia. romanchukay@my.msu.ru.
Abstract:
This study investigates various sorbents for the effective sorption of dissolved organic substances, using tributyl phosphate (TBP) as a model compound. TBP is one of the most commonly used extractants in the nuclear industry. Four different carbon materials with high specific surface areas (2000-3000 m2 g-1) were selected for evaluation. The sorption of TBP from nitric acid solutions was examined over a wide range of concentrations. The samples with the largest specific surface areas showed the highest sorption capacity for organic matter. To enable repeated use, a purification scheme was developed to restore the sorbents' original properties. The samples were subjected to various treatments, analyzed using X-ray photoelectron spectroscopy, and used in subsequent sorption experiments.
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