SZIDONIA-KATALIN TANCZOS, IRINA CHICAN, ALEXANDRA RALUCA MIRON, DOINA ANTONETA RADU, ANDREEA RADUCU, AURELIA CRISTINA NECHIFOR<br>Emulsion Membranes Iodine Separation I. Preparation of organic phase membrane <br>emulsion / receiving aqueous solution

SZIDONIA-KATALIN TANCZOS, IRINA CHICAN, ALEXANDRA RALUCA MIRON, DOINA ANTONETA RADU, ANDREEA RADUCU, AURELIA CRISTINA NECHIFOR
Emulsion Membranes Iodine Separation I. Preparation of organic phase membrane
emulsion / receiving aqueous solution

Abstract:

One of the major obstacles in membranes achievement is represented by the difficulty of determining the emulsion stability domain, in correlation with flow regime. The main parameters which are taken into account in this case are: feed solution droplet size, the density of the two phases, organic and respectively, aqueous , the nature of surfactants and working temperature. In this paper are established the conditions for obtaining the receiving aqueous solution/organic solvent primary emulsions (RP / M) necessary in the separation of iodine from poor sources. Basically, the aqueous receiving phase is dispersed, in the presence of a surfactant in the organic phase which constitutes the membrane. In order to obtain emulsions of water in the organic phase, the aqueous receiving phase is dispersed under vigorous stirring in the organic phase.The emulsions stability was monitored over time, depending on the: pH of the receiving phase, aqueous/organic phase volumetric ratio, nature and concentration of the surfactant.The time at which the occurrence of single-phase system first layer is observed represents the emulsion life time. Keywords: iodine separation, emulsion membranes, emulsion stability, recuperative separation

Issue: 2014, Volume 65, Issue 6

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