Extração liquido-liquido por fase unica : estudo do comportamento de Cr, Mn, Fe, Co, Ni, e Ci no sistema agua-acetona-benzeno, com acetilacetona

AUTOR(ES)
DATA DE PUBLICAÇÃO

1978

RESUMO

Liquid-liquid Single-Phase extractions, in the system water-acetone-benzene, in nitric acid media, were studied with acetyl-acetone (ACAC) for the metals Cr, Mn, Fe, Co, Ni and Cu. Fe showed extraction yelds near 98%. Cu, Ni and Co are not well extracted by this technique. However Mn, which is not extrated by the conventional (two phases) extraction technique, can be extracted by the Single-Phase system. The spectroscopic study (320 - 600 nm) of the Fe-ACAC chelate in the Single-Phase extraction solution and also in the organic phase, at several concentrations of the chelate, showed that lower complexes are also present. The spectra were stable for up to 5 hours.

ASSUNTO(S)

extração (quimica)

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