Inorganic Extraction Studies on the System between Tri-n-butyl Phosphate and Hydrochloric Acid

Measurement of achievable plutonium decontamination from gallium by means of PUREX solvent extraction

“…Although this supports the proposition that gallium is well behaved and essentially inextractable in the HNO 3 -TBP system, another publication by the same authors shows that gallium is extractable in the HCl-TBP system, with a K d of about 10 3 in 2-10 M HCl, but decreasing to about 1 in low-acid conditions. 11 Kraus and Nelson report similar behavior in low and moderate HCl concentrations but even larger K d values above 6 M HCl, in the ≥10 4 range. 12 These references demonstrate that decontamination from gallium should present no unusual problem in PUREX separations with reasonably pure systems (HNO 3 -TBP).…”

Adsorption Behaviour of Some Actinides on Zirconium Phosphate from Mineral Acid-Alcohol Media

“…The isotopes 234Th, ^^^Pa, zsau, ass^p, and 23»Pu were used for tracing thorium IV, protactinium V, uranium VI, neptunium IV and plutonium IV. ^'^Th was isolated from stored uranyl nitrate by tri-n-butyl phosphate extraction [5]. was separated from irradiated thorium nitrate by tri-noctylamine extraction [6].…”

THERMODYNAMIC STUDY OF THE EXTRACTION OF INDIUM(III) AND CADMIUM(II) BY CYANEX 301 FROM CONCENTRATED HCl MEDIA

“…During the pyrometallurgical processes, indium accumulates in different solid phases which can be dissolved in sulfuric acid or hydrochloric acid solutions. The resulting aqueous phases are highly acidic (typically [H+] = 5 M) and can be further processed by liquid-liquid extraction [1][2][3][4][5][6][7][8][9][10]. Indeed, indium(III) can be easily extracted from hydrochloric acid or sulfuric acid environments by using Cyanex 301 (bis (2,4,4-trimethylpentyl) dithiophosphinic acid) as an extractant [11,12].…”