A1 Refereed original research article in a scientific journal
Recycling of O-18 enriched water used in F-18 cyclotron production
Authors: Todorov B, Belovezhdova I, Alanen O, Airaksinen AJ, Djingova R
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication year: 2019
Journal: Applied Radiation and Isotopes
Journal name in source: APPLIED RADIATION AND ISOTOPES
Journal acronym: APPL RADIAT ISOTOPES
Volume: 145
First page : 109
Last page: 115
Number of pages: 7
ISSN: 0969-8043
DOI: https://doi.org/10.1016/j.apradiso.2018.12.013
Abstract
A simple, effective, easy-handling and reliable method for recycling of [O-18]H2O from fluorine-18 production, was developed based on co-precipitation, co-crystallization and distillation. Preliminary experiments with normal H2O were used to determine the optimal purification conditions, which were tested for purification of used [O-18]H2O from a scientific and commercial F-18-production facility. The obtained recycled [O-18]H2O had comparable quality to commercially available 180 enriched water. The loss of weight for enriched water was about only 7% and losses of 180 enrichment about 1.3% +/- 0.2%. The method ensures elimination of radioisotopes (99.7% +/- 0.1%), organic compounds (99.5% +/- 0.1%) and trace metals (99.8% +/- 0.1%) with special attention on radiation safety with dosimetry control checks and in total 1000 times mass reduction of the initial radioactive waste.
A simple, effective, easy-handling and reliable method for recycling of [O-18]H2O from fluorine-18 production, was developed based on co-precipitation, co-crystallization and distillation. Preliminary experiments with normal H2O were used to determine the optimal purification conditions, which were tested for purification of used [O-18]H2O from a scientific and commercial F-18-production facility. The obtained recycled [O-18]H2O had comparable quality to commercially available 180 enriched water. The loss of weight for enriched water was about only 7% and losses of 180 enrichment about 1.3% +/- 0.2%. The method ensures elimination of radioisotopes (99.7% +/- 0.1%), organic compounds (99.5% +/- 0.1%) and trace metals (99.8% +/- 0.1%) with special attention on radiation safety with dosimetry control checks and in total 1000 times mass reduction of the initial radioactive waste.
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