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Critical flux

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Crossflow ultrafiltration of binary protein solutions was carried out using flux-stepping and constant flux experiments to identify the apparent critical flux where fouling is rapid. The contributions of individual protein species to the apparent critical flux were evaluated as well as th ...
Desalination 146 (2002)

... cohesion forces exist between particles, the aeration, even under weak flow rate, allows to avoid this deposit making. Keywords: Ultrafiltration; Critical flux; Air injection; Immersed membrane; Coagulation 1. Introduction Ultrafiltration systems (UF) are becoming an attractive alternative fo ...
Desalination 145 (2002)

... of microfiltration (MF) with a 0.1 µm pore Teflon membrane and of an ultrafiltration (UF) polyethersulfone-one with 150 kD cut-off. The critical flux for stable operation was investigated in MF by increasing the permeate flux in steps while monitoring the transmembrane pressure. It wa ...
Desalination 144 (2002)

If the notion of sustainable critical flux can be analysed in regards to hydrodynamics conditions imposed closed to a defined membrane surface taking into account the suspensio ...
Desalination 231 (2008)

This paper discusses fouling in reverse osmosis in terms of the critical flux of foulants and the fouling mechanisms based on hydraulic resistance and loss of driving force due to cake-enhanced osmotic pressure (CEOP).
Desalination 220 (2008)

The effect of solute size relative to membrane pore size on the critical flux during the ultrafiltration of protein solutions was investigated using the constant pressure method. Hydrophilic regenerated cellulos ...
Desalination 175 (2005)

... has been assessed in relation to the application of a cessation period followed by a gentle rinse. The work demonstrates the existence of a critical filtered volume below which the mass accumulated at the membrane’s surface is reversible and above which significant fouling occurs. Further,... of the relaxation time before rinsing on the irreversibility was demonstrated to increase the degree of reversibility attainable. The recovery in flux was found to be strongly linked to the operating pressure. The critical fouling conditions, defining a critical change in fouling irreversibility ...
Desalination 175 (2005)

... obstacle to efficient operation remains the deterioration of membrane permeability with time. One possible approach to the fouling issue is sub-critical flux operation. Other options are air sparging and backflushing. This study investigated the impact of air sparging and backflushing on flux ...
Desalination 175 (2005)

... such as flocculation and/or adsorption on the performance of crossflow microfiltration (CFMF). CFMF performance was studied in terms of critical flux. The results indicated that: (1) flocculation alone as a pretreatment could effectively remove the large molecular weight organic matter fro ...
Desalination 172 (2005)

... is fouling tendency. In this paper, three different submerged membranes were used for municipal wastewater treatment. The relationship between critical flux and mixed liquor suspended solid concentration was investigated. Information about the fouling tendency of the membranes was obtained b ...
Desalination 246 (2009)
 

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