Radiation Damage to TBP/Kerosene Solvent

Journal Article · Thu Dec 31 23:00:00 EST 1959 · Nippon Genshiryoku Gakkai-Shi

DOI:https://doi.org/10.3327/jaesj.2.659· OSTI ID:4100959

ISHIHARA, Takehiko; TSUJINO, Takeshi; YAMAMOTO, Yutaka

Radiation damage to 30 vol. % TBP(tributyl phosphate)/ kerosene solvent was investigated to study the behavior changes of fission products and nitric acid in extraction and in stripping with 0.01 N nitric acid at 25 deg C. In these extraction-stripping experiments, three types of solvent were used; namely, Co⁶⁰ gamma -ray irradiated (10/sup 4/ to 10⁸r) solvent, non- irradiated solvent, and synthetic "damaged solvent," or DBP (dibutyl phosphate)- MBP (monobutyl phosphate), butanol, or pyrophosphoric acid added to TBP/Kerosene. It was found that Zr⁹⁵ --Nb⁹⁵ is extremely affected in extraction- stripping with radiation damaged and synthetic damaged solvent compared with Ru¹⁰⁶--Rh¹⁰⁶ I¹³¹, Ce¹⁴⁴-- Pr¹⁴⁴, and gross fission produ cts, and that its behavior change depends mainly on the formation of DBPWBP, but not on that of butanol or pyrophosphate. Ru¹⁰⁶Rh¹⁰⁶ is hardly affected in extraction with damaged solvent and is affected only in stripping from damaged solvent. Neither Ce¹⁴⁴--Pr¹⁴⁴ nor nitric acid is influenced by ra diation damage to the solvent. I¹³¹ behavior change is different from others. Emulsion formation was observed only in Zr⁹⁵--Nb⁹⁵ extraction with 10⁷r or more irradiated and DBP-MBP added solvent (0.01 g or more/l-solvent). Settling time or phase separation time changes may not affect the process significantly except in the case of emulsion formation.

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-006059
• OSTI ID: 4100959
• Journal Information: Nippon Genshiryoku Gakkai-Shi, Journal Name: Nippon Genshiryoku Gakkai-Shi Journal Issue: 11 Vol. 2; ISSN 0004-7120
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
BEHAVIOR
BUTANOL
BUTYL PHOSPHATES
CERIUM 144
COBALT 60
EMULSIONS
FISSION PRODUCTS
IODINE 131
IRRADIATION
KEROSENE
NIOBIUM 95
NITRIC ACID
PHOSPHORIC ACID
PRASEODYMIUM 144
RADIATION EFFECTS
RHODIUM 106
RUTHENIUM 106
SOLVENT EXTRACTION
SOLVENTS
TBP
ZIRCONIUM 95