Gamma Radiolysis of Biphasic Acetohydroxamic Acid (AHA) Solvent Systems

Conference · Wed Aug 11 04:00:00 EDT 2021

OSTI ID:1812875

Umpleby, Rachel Elaine ^[1]; Horne, Gregory P ^[1]; Conrad, Jacy Kathleen ^[1]

---

1. Idaho National Laboratory

Acetohydroxamic acid (AHA) has been proposed as a substitute for uranium(IV) and hydrazine as a plutonium complexant and neptunium reductant for simplified, single-cycle used nuclear fuel reprocessing flowsheets. However, the chemical behavior of AHA in an intense multi-component radiation field is poorly understood, especially under representative biphasic reprocessing solvent system conditions. In response to this critical knowledge gap, this study has investigated the gamma radiolytic integrity of AHA in aqueous nitric solutions in contact with an organic phase, comprising current and future reprocessing ligands (TBP, DEHBA, and DEHiBA) dissolved in n-dodecane diluent. Our data show negligible effect of the organic phase on the radiolytic behavior of AHA compared to complementary single-phase experiments.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1812875
• Report Number(s): INL/EXP-21-63705-Rev000
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
DEHBA
DEHiBA
TBP
acetohydroxamic acid
gamma radiolysis