Statics of uranium adsorption from chloride-fluoride solutions by aminocarboxylic polyampholytes

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6330206

Pakholkov, V S; Denisova, L A; Rychkov, V N

The adsorption of uranium from UO/sub 2/Cl/sub 2/ solutions containing HCl, NH/sub 4/Cl, and HF using polyampholytes ANCB-1, ANCB-7, and ANCB-10, which were synthesized from the corresponding anion-exchange resins AN-31, AV-16D, and AN-61, has been investigated under static conditions. For pure chloride solutions, in a moderate HCl (or NH/sub 4/Cl) concentration range, adsorption occurs via a cation exchange mechanism. Anionic exchange is the main adsorption process for chloride-fluoride solutions containing HCl concentrations up to 2 M. These conclusions have been verified by IR spectroscopic data. The experimental results obtained for mixed chloride-fluoride solutions can be approximated using the following regression equations: (A/sub (0-3)/ = -0.83 + 0.13C/sub HF/ + 0.18C/sub HCl/ + 40.7C/sub U/ + 0.22C/sub HF/ x C/sub HCl/ - 10C/sub HCl/ x C/sub U/ + 30C/sub HF/ x C/sub U/ - 20C/sub HF/ x C/sub HCl/ x C/sub U/ (for the concentration range of HCl from 0 to 3.0 M); and A/sub (3-6)/ = -0.81 + 0.135C/sub HCl/ + 22C/sub U/ (for the HCl concentration range from 3.0 to 6.0 M). The variable A in these equations stands for the adsorptivity in mmole U/g.

• OSTI ID: 6330206
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 29:4; ISSN SVRDA
• Country of Publication: United States
• Language: English

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ACTINIDE COMPOUNDS
ADSORPTION
AMINO ACIDS
AMMONIUM CHLORIDES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HYDROCHLORIC ACID
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INFRARED SPECTRA
INORGANIC ACIDS
ION EXCHANGE
ION EXCHANGE MATERIALS
MATERIALS
MATHEMATICS
MEMBRANES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
QUANTITY RATIO
REGRESSION ANALYSIS
RESINS
SORPTION
SORPTIVE PROPERTIES
SPECTRA
STATISTICS
SURFACE PROPERTIES
URANIUM COMPOUNDS
URANYL CHLORIDES
URANYL COMPOUNDS
VALENCE