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    STUDIA CHEMIA - Issue no. 4, Tom I / 2017  
         
  Article:   POLIMERIC MEMBRANES PREPARED WITH SURFACTANTS USED FOR ULTRAFILTRATION OF AQUEOUS SOLUTIONS OF FOOD DYE.

Authors:  GEORGE ALEXANDRU POPA, GHEORGHE NECHIFOR, DANIELA FLORENTINA ENACHE (POPA), SZIDONIA-KATALIN TANCZOS, ADRIAN CIOCANEA. 		 
       
         
  Abstract:  The experiments carried out in this paper tested the effectiveness of the polysulfone-dimethyldioctodecylammonium bromide (PSU-DMOA) and polysulfone-Tween 80 in dead-end facilities. The efficiency of these membranes has been proved by determining the permeate flow and the retention coefficient. Analyzing the experimental data, it was found that for the polysulfone-dimethyldioctodecylammonium bromide composite membrane the retention rate is higher than for the polysulfone-Tween 80 composite membrane, the t values being obtained for the highest pressure used in the system.

Keywords: composite membranes, ultrafiltration, surfactants, food dye 		 
         
     
         
         
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