화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.19, No.4, 1086-1091, July, 2013
DOI10.1016/j.jiec.2012.12.003  Export Citation
Modeling of facilitated transport of Cr(III) using (RNH3+HSO4-) ionic liquid and pseudo-emulsion hollow fiber strip dispersion (PEHFSD) technology
F.J. Alguacil†, I. Garcia-Diaz, and F.A. Lopez
  • Centro Nacional de Investigaciones Metalurgicas (CSIC), Avda. Gregorio del Amo 8, 28040 Madrid, Spain
E-mail:
The permeation of chromium (III) using PEHFSD technology and the ionic liquid (RNH3+HSO4-), formed by reaction of the primary amine PRIMENE JMT and sulphuric acid, dissolved in n-decane as mobile carrier has been investigated. The alkaline feed solution containing Cr(III) was passed through the tube side, and pseudo-emulsions of the ionic liquid + n-decane + n-decanol and sulphuric acid were passed through the shell side in counter-current mode and using a single hollow fiber module for extraction and stripping. In this advanced membrane technology, the aqueous acidic strip solution is dispersed in the organic membrane solution in a tank with an impeller stirrer to form a strip dispersion. The pseudoemulsion phase is circulated from the tank to the membrane module to provide a constant supply of the organic solution to the membrane micropores. Factors affecting chromium permeability, such as hydrodynamic conditions, carrier concentration in the organic phase, metal and NaOH concentrations in the feed phase, have been analyzed. A model is reported describing the transport mechanism, whereas the experimental data are quantitatively explained by mathematical equations describing the rate of transport. Different rate-controlling processes take place as long as the metal transport occurs.
Keywords:Chromium(III);Amine PJMT;Liquid membranes;Ionic liquids;Wastewater treatment
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