The application of poorly crystalline silicotitanate in production of 225Ac
- Brookhaven National Lab. (BNL), Upton, NY (United States). Collider-Accelerator Division, Medical Isotope Research & Production Lab.
- Stony Brook Univ., Stony Brook, NY (United States). Chemistry Dept.
- Stony Brook Univ., Stony Brook, NY (United States). Biochemistry Dept.
Actinium-225 (225Ac) can be produced from a Thorium-229/Radium-225 (229Th/225Ra) generator, from high/low energy proton irradiated natural Thorium or Radium-226 target. Titanium based ion exchanger were evaluated for purification of 225Ac. Poorly crystalline silicotitanate (PCST) ion exchanger had high selectivity for Ba, Ag and Th. 225Ac was received with trace amounts of 227Ac, 227Th and 223Ra, and the solution was used to evaluate the retention of the isotopes on PCST ion exchanger. Over 90% of the 225Ac was recovered from PCST, and the radiopurity was >99% (calculated based on 225Ac, 227Th, and 223Ra). The capacity of the PCST inorganic ion exchange for Barium and 232Th was determined to be 24.19 mg/mL for Barium and 5.05 mg/mL for Thorium. PCST ion exchanger could separate 225Ac from isotopes of Ra and Th, and the process represents an interesting one step separation that could be used in an 225Ac generator from 225Ra and/or 229Th. Capacity studies indicated PCST could be used to separate 225Ac produced on small 226Ra targets (0.3–1 g), but PCST did not have a high enough capacity for production scale Th targets (50–100 g).
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1547020
- Report Number(s):
- BNL-211944-2019-JAAM
- Journal Information:
- Scientific Reports, Vol. 9, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Metal Oxide Sorbents for the Separation of Radium and Actinium
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journal | November 2020 |
Guest Edited Collection: Radioisotopes and radiochemistry in health science
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journal | January 2020 |
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