A Study on the Concentration Polarization Layer Resistance in Ultrafiltration of Macromolecular Solutions

고분자 용액의 한외여과에서 농도분극층 저항에 관한 연구

  • 염경호 (충북대학교 공과대학 공업화학과, 충북 청주시 개신동 산48)
  • Published : 1992.09.01


The experimental studies were carried out on ultrafiltration of PEG #6000 and dextran 70T macromole¬cules. using an asymmetric cellulose acetate membrane in a cross flow plane type cell. Effects of pressure difference. feed concentration were studied on permeate flux and observed rejection for both the macromole¬cules. and the concentration polarization layer resistance $R_{b1}$ on permeate flux was analysed. The concentration polarization layer resistance $R_{b1}$ was correlated with the average macromolecule concen¬tration $C_{b1}$ in polarization layer. The resulting dimensionless correlation was expressed as : $\frac{R_{b1}}{{R_m}}=\alpha[\frac{\rho_{b1}}{C_{b1}}]^\beta$



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