Papers Published

1. Lahoussine-Turcaud, Veronique and Wiesner, Mark R., Fouling in tangential-flow ultrafiltration. The effect of colloid size and coagulation pretreatment, Journal of Membrane Science, vol. 52 no. 2 (1990), pp. 173 - 190 [S0376-7388(00)80484-6] .
   (last updated on 2007/04/09)

   Abstract:
   The fouling characteristics of dispersions of dissolved organic materials and colloids are investigated in a series of ultrafiltration experiments. Dispersions of tannic acid, humic acid and kaolin are filtered using a cross-flow hollow fiber module. In some cases these materials are modified through the addition of a polymeric aluminum coagulant. The flux characteristics of these dispersions, ranging in particle size from several nanometer to several hundred micrometer, are in qualitative agreement with theory; particles near 0.2 μm in diameter produce rapid fouling, while particles greater than 3 μm in size have little effect on flux. Coagulation of the model dispersions is effective in maintaining membrane flux. However, coagulation pretreatment of Seine River water produced smaller improvements in membrane flux.

   Keywords:
   Acids - Dispersions;Adsorption;Water Treatment - Coagulation;