Extraction Behaviour of Gadolinium into the Binary Mixture of Tri-n-Butyl Phosphate and n-Dodecane
DOI:
https://doi.org/10.53555/bp.v2i2.152Keywords:
Gadolinium, Solvent extraction,, Distribution coefficient,, fuel reprocessing, Soluble neutron poisonAbstract
The present paper describes, the systematic study of extraction behaviour of gadolinium has been investigated with (0.36-1.1M) TBP in n-dodecane diluent from different concentration of nitric (1-16M) acid medium. The effect of temperature and uranium loading on the extraction of Gd(III) also been examined. The DGd increases when the TBP concentration increases from 0.0425 to 0.0626 and 0.366 M to 1.01 M respectively. And DGd also increases when the acidity of the medium increases from 0.0087 to 0.3121 and 0.97 M to 13.5 M respectively. But the study of effect of uranium loading and temperature in gadolinium extraction showed that the DGd decreases down to 0.0253 when 90 g/L uranium loading and DGd decreases down to 0.0184 when 53oC temperature respectively. The obtained results clearly indicates that the decontamination factors obtained for Gd is sufficiently high as its distribution in 30% TBP is pretty low under typical PUREX process conditions.
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