Colloidal fouling of microfiltration membranes during the treatment of aqueous feed streams

Industrial wastewater treatment in a membrane bioreactor: A review

“…These results show a difference that originates simultaneously from the substrate used (milk containing synthetic substrate), the biomass, the methods used to separate sludge, the membranes, and the application or not of a chemical washing. However, the lack of any pH measurements is prejudicial; actually, Wakeman and Tarleton [42] noted a strong influence of pH on the colloidal membrane fouling, which could indicate some divergences in the previous studies. However, according to Tardieu et al [30], it seems that both the characteristics of the bacterial suspension and the quantity of soluble and colloidal compounds are responsible for membrane fouling.…”

A new normalization method for determination of colloidal fouling potential in membrane processes

“…Over the past two decades, extensive experimental and theoretical investigations have been conducted to study the rate of colloidal fouling in various membrane processes [1,[3][4][5][6][7][8][9][10][11][12] and this topic remains one of the key interests in the current research on membrane technology. The rate of colloidal fouling is affected by both operational parameters of the membrane system, such as the membrane resistance and the driving pressure, and the properties of the feed water, usually indicated by fouling tendency or potential.…”

In situ filtration of Anchusa officinalis culture in a cell-retention stirred tank bioreactor

“…The et&t of particle packing selectivity was found to be more profound for the larger particles than the smaller ones. For instance, for calcite of mean particle size 27.5 pm, an increase in cross-flow velocity led to a decrease in filtrate flux whereas for a mean size of 2.7 ~.un, the opposite occurred (Wakeman and Tarleton, 1991). Cultured plant cells are quite large in size (10 to 100 pm in diameter), and more so they are usually present as cell aggregates.…”