Radiolytic degradation of a crown ether for extractability of strontium

Journal Article · Mon Nov 01 04:00:00 EST 1999 · Solvent Extraction and Ion Exchange

DOI:https://doi.org/10.1080/07366299908934658· OSTI ID:20019003

Takagi, Noriaki; Izumi, Yoshinobu; Ema, Kimiko; Yamamoto, Tadashi; Nishizawa, Kazushige

Dicyclohexano-18-crown-6 (DC18C6), dissolved in chloroform, 1-octanol, toluene or cyclohexane, was irradiated by {sup 60}Co {gamma}-rays. Radiolytic destruction of DC18C6, measured by gas chromatography, decreased in the order: chloroform > cyclohexane > 1-octanol > toluene. Distribution coefficients in the solvent extraction of strontium from nitric acid solution were measured. These distribution coefficients were minimally affected by {gamma}-irradiation in toluene solution, but decreased with the absorbed dose in chloroform solution. It was suggested that the distribution coefficient for the liquid-liquid extraction system was influenced by radiolytic products. The effect of radiolytic products on the distribution coefficients was evaluated by considering DC18C6 remaining in the organic phase after irradiation. The distribution coefficient measured for the organic phase with radiolytic products was larger than that without radiolytic products. The radiolytic products were thus shown to contribute to the increase in the distribution coefficient.

• Research Organization: Osaka Univ., Suita (JP)
• OSTI ID: 20019003
• Journal Information: Solvent Extraction and Ion Exchange, Journal Name: Solvent Extraction and Ion Exchange Journal Issue: 6 Vol. 17; ISSN 0736-6299; ISSN SEIEDB
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
COBALT 60
CROWN ETHERS
GAMMA RADIATION
ORGANIC SOLVENTS
RADIOACTIVE WASTE PROCESSING
RADIOLYSIS
SOLVENT EXTRACTION
STRONTIUM