Effect of anions in commercial phosphoric acid on the extraction of uranium by DEHPA /TOPO
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Tartalom: https://pp.bme.hu/ch/article/view/163
Archívum: PP Chemical Engineering
Gyűjtemény: Articles
Cím:
Effect of anions in commercial phosphoric acid on the extraction of uranium by DEHPA /TOPO
Létrehozó:
Kherfan, Sadeddin
Shadood, Gassan
Koudsi, Yahia
Kiadó:
Periodica Polytechnica Chemical Engineering
Dátum:
2011-01-01
Téma:
Extraction; uranium ; DEHPA/TOPO ; anions; phosphoric acid
Tartalmi leírás:
Extraction of uranium from commercial phosphoric acid by DEHPA/TOPO process is a well-developed process on the commercial and pilot plant scale. Commercial phosphoric acid contains certain anions such as Cl^-, F^- and SO_4^2- in varying concentrations. The presence of such anions could have a negative effect on the extraction process. This paper investigated the effect of Cl^-, F^- and SO_4^2- anions present in commercial wet phosphoric acid on the uranium extraction process. The effect of adding SiO_2 which complexes with F^- and other anions was also studied. The results obtained showed that these anions formed complexes with UO_2^2+ and therefore had a negative influence on the extraction of uranium from laboratory and commercial phosphoric acids. This effect was strong in the case of F^- followed by SO_4^2- and much less for Cl^-. Addition of SiO_2 was found to negate the effect of F^- and other anions and to exert a positive effect on uranium extraction.
Nyelv:
angol
Típus:
info:eu-repo/semantics/article
Peer-reviewed Article
info:eu-repo/semantics/publishedVersion
Formátum:
application/pdf
Azonosító:
10.3311/pp.ch.2011-1.05
Forrás:
Periodica Polytechnica Chemical Engineering; Vol. 55, No. 1 (2011); 27-30
Kapcsolat:
Létrehozó:
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