SciELO - Scientific Electronic Library Online

vol.23 número7Pterodon pubescens benth: stability study of microencapsulated extract and isolated compounds monitored by antinociceptive assaysGuanabara bay sedimentation rates based on 210Pb dating: reviewing the existing data and adding new data índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados


Journal of the Brazilian Chemical Society

versión impresa ISSN 0103-5053


KIM, Chul-Joo et al. Solvent extraction studies on uranium using amine based extractants and recovery from low grade ore leach liquors. J. Braz. Chem. Soc. [online]. 2012, vol.23, n.7, pp.1254-1264. ISSN 0103-5053.

In this study, amine based extractants (Alamine 336, Alamine 308, Alamine 304 and Aliquat 336) diluted in kerosene were used as promising extractants for uranium extraction and separation from other associated elements. Alamine 336 was the best extractant for uranium extraction process from sulfate solutions when compared with other amine based extractants, Alamine 308, Alamine 304 and Aliquat 336. Synergistic extraction behavior was studied with amines as extractants as well as synergists and organophosphorus reagents used as synergist mixed with amines. Synergistic extraction studies with amines were not suitable with each other for better extraction efficiency. However, amines mixed with organophosphorus extractants gave positive synergetic behavior with the highest synergistic coefficient 0.567 calculated from results obtained. The developed methodology was applied to uranium low grade ore processing and 99.83% of uranium was recovered without the interferences of other metals.

Palabras clave : uranium; extraction; separation; amine based extractants.

        · resumen en Portugués     · texto en Inglés     · Inglés ( pdf epdf )


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons