TY - GEN
T1 - Effects of aqueous phase radiolysis on organic complexants used for trivalent actinide/lanthanide separations
AU - Martin, Leigh R.
AU - Mincher, Bruce J.
AU - Mezyk, Stephen P.
AU - Tillotson, Richard D.
PY - 2009
Y1 - 2009
N2 - Understanding the radiolytic degradation behavior of organic molecules involved in new or existing schemes for the recycling of used nuclear fuels is of significant interest for sustaining a closed nuclear fuel cycle. The high radiation fields that exist in dissolved nuclear fuels, and raffinates from processed fuel, produce a variety of transient and long-lived species which react with the reagents that facilitate these separations. The TALSPEAK process (Trivalent Actinide Lanthanide Separations by Phosphorus-reagent Extraction from Aqueous Komplexes) for the separation of the trivalent lanthanide and actinide elements is one process that has been receiving increased attention in recent years. However, there is little information available on the radiation resistance of the aqueous phase complexants lactic acid and diethylenetriamine-N,N,N′,N″,N″-pentaacetic acid (DTPA) used to accomplish the separation. This paper will discuss the results of our initial investigations into the radiolytic degradation of TALSPEAK aqueous phases and the resulting effects on the trivalent actinide/lanthanide separation.
AB - Understanding the radiolytic degradation behavior of organic molecules involved in new or existing schemes for the recycling of used nuclear fuels is of significant interest for sustaining a closed nuclear fuel cycle. The high radiation fields that exist in dissolved nuclear fuels, and raffinates from processed fuel, produce a variety of transient and long-lived species which react with the reagents that facilitate these separations. The TALSPEAK process (Trivalent Actinide Lanthanide Separations by Phosphorus-reagent Extraction from Aqueous Komplexes) for the separation of the trivalent lanthanide and actinide elements is one process that has been receiving increased attention in recent years. However, there is little information available on the radiation resistance of the aqueous phase complexants lactic acid and diethylenetriamine-N,N,N′,N″,N″-pentaacetic acid (DTPA) used to accomplish the separation. This paper will discuss the results of our initial investigations into the radiolytic degradation of TALSPEAK aqueous phases and the resulting effects on the trivalent actinide/lanthanide separation.
UR - http://www.scopus.com/inward/record.url?scp=78649776717&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78649776717
SN - 9780841200050
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
T2 - 238th National Meeting and Exposition of the American Chemical Society, ACS 2009
Y2 - 16 August 2009 through 20 August 2009
ER -