Trapping of deuterium dissolved in fluidized Li by Y

•Recovery of deuterium is experimentally proved in liquid Li forced convection flow by Y metal trap.•10ppm D as the target concentration is successfully removed from Li flow.•H2O or HNO3 dissolution technique is developed to analyze D concentration in Li or Y. Recovery of D dissolved in a liquid Li...

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Bibliographic Details
Published in:Fusion engineering and design 2014-10, Vol.89 (7-8), p.1346-1350
Main Authors: Fukada, Satoshi, Hiromoto, Tetsushi, Shigeharu, Satoshi, Sugie, Kunihiro, Edao, Yuki
Format: Article
Language:English
Subjects:
Depletion
Deuterium
Dissolution
Dissolution analysis
Fluidizing
Isotopes
Liquids
Lithium
Trapping
Tubes
Yttrium
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Summary:•Recovery of deuterium is experimentally proved in liquid Li forced convection flow by Y metal trap.•10ppm D as the target concentration is successfully removed from Li flow.•H2O or HNO3 dissolution technique is developed to analyze D concentration in Li or Y. Recovery of D dissolved in a liquid Li flow at low D concentration is experimentally investigated using a Y metal absorber under the two fluidized conditions: (a) in a vertical cylindrical tube and (b) in an agitated vessel. The target concentration is 1appm in Li around at 300°C. The two concentrations of D remaining in Li and recovered by Y are detected by a dissolution method using H2O with depleted-D and HNO3. The main released species is HD. A small amount of HDO released is reduced to HD by a Mg particle bed. It is found that HF-treated Y can absorb H isotopes at the target temperature and concentration. The chemical dissolution technique is found to be useful to specify the two absolute concentrations of D recovered by Y and D remaining in Li.
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2014.02.030