Determination of Tribromo-neopentyl Alcohol Micelle Distribution Coefficients in Single and Mixture Solutions for Evaluation of Micellar Enhanced Ultrafiltration Feas... Academic Article uri icon


  • To evaluate the potential of micellar enhanced ultrafiltration (MEUF) for treating groundwater contaminated with organics in northern Negev, Israel, the partition coefficient, K TBNPA, of tribromo-neopentyl alcohol (TBNPA) between aqueous and micellar phases was determined for nonionic surfactants. Two methods were used for the determination: the MEUF method using centrifugal UF equipped with 10 kDa MWCO regenerated cellulose and the solid phase matrix extraction (SPME) method using gas chromatography (GC) analysis. The distribution coefficient of TBNPA for nonionic surfactant Brij 58 (C16EO20) was∼ 630 M− 1 and fairly constant over a wide range of loadings (mole fraction of TBNPA in micelle from 0.07− 0.45) when determined by centrifugal MEUF; but is was only∼ 340− 400 M− 1 when determined by SPME. This difference is attributed to concentration polarization of …

publication date

  • May 28, 2009