Title: VIABILITY OF THE LIQUID-LIQUID SEPARATION OF CADMIUM FROM PHOSPHORIC ACID USING ALIQUAT 336 AS EXTRACTANT
Abstract: In this work it is presented the viability of the application of the liquid-liquid extraction to the separation of cadmium from wet phosphoric acid using a new technology, non-dispersive liquid-liquid extraction (NDSX), as separation technique. Preliminary batch tests were carried out in order to select the most adequate cadmium extractant. Kinetic experiments with coupled extraction-stripping steps were performed in two hollow fibre modules working with industrial phosphoric acid and an ammonium quaternary salt, ALIQUAT 336, as selective extractant diluted in kerosene. A high cadmium separation efficiency, better than 95%, was obtained with a feed phase flow rate equal to 2 ml/min. The cadmium concentration in the stripping phase was increasing with the cadmium loading of the organic phase.
Publication Year: 1997
Publication Date: 1997-01-01
Language: en
Type: article
Indexed In: ['crossref']
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