One column operation for (90)Sr/(90)Y separation by using a functionalized-silica.
Organo-ceramic hybrid materials have been developed as the separation media for a (90)Sr/(90)Y generator system. Currently available (90)Y is generally extracted from a mother solution by a solvent extraction or a successive column operation. Both processes are successfully applied to produce (90)Y with a high quality standard. However, such processes are highly dependent on what kind of extracting materials are employed. Hence, some of the previously developed technologies are not adequate for a (90)Y production because of a waste generation or leaching of radiolytic end-products from the extracting materials. In this study, high performance organo-ceramic hybrid materials have been applied for the extraction of (90)Y. The hybrid materials have properties of both a ceramic and a solvent extractant by molecularly implanting the extracting molecules on to the ceramic surfaces. In this study, organo-phosphorus functionalized hybrid materials are synthesized and tested as the separation media for the (90)Y/(90)Sr generator system. An adsorptive extraction with a small Sep-Pak type column can recover more than 92% of (90)Y with a contamination ratio of (90)Sr/(90)Y=1.2x10(-5) from the mother solution and 70% with 5x10(-7).
Lee
Jun Sig
JS
Korea Atomic Energy Research Institute, 1045 Daedeuk-daero, Deukjin-dong, Yuseong-gu, Daejeon, South Korea. jlee15@kaeri.re.kr
Park
Ul-Jae
UJ
Son
Kwang-Jae
KJ
Han
Hyon-Soo
HS
D000327:Adsorption; D002516:Ceramics; D002845:Chromatography / Q000379:methods*; D054802:Molecular Imprinting; D009943:Organophosphorus Compounds; D011876:Radionuclide Generators; D012822:Silicon Dioxide / Q000737:chemistry*; D013326:Strontium Radioisotopes / Q000302:isolation & purification*; D015021:Yttrium Radioisotopes / Q000302:isolation & purification*
D009943:Organophosphorus Compounds; D013326:Strontium Radioisotopes; D015021:Yttrium Radioisotopes; D012822:Silicon Dioxide