Patent ID: 7569192

Claim:
A system for producing bismuth-213, comprising: a dissolver unit; a precipitation tank configured to receive a dissolved thorium material from the dissolver unit; a salt source configured to deliver one or more salt species to the precipitation tank; a separator configured to receive a liquid fraction comprising a thorium decay product including at least one of actinium-225 and bismuth-213 from the precipitation tank; at least one chromatography column configured to receive the thorium decay product including at least one of actinium-225 and bismuth-213 from the separator; a collector configured to receive and retain at least one of actinium-225 and bismuth-213 from the at least one chromatography column; at least one recycle pathway configured to deliver thorium recovered from the at least one chromatography column to the precipitation tank; and a pathway for delivering a supernatant from the precipitation tank to a storage.