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Effect of Membrane Materials on Membrane Fouling and Membrane Washing  

Shim, Hyun-Sool (Division of Construction Engineering, Pukyong National University)
Jung, Chul-Woo (Ulsan Regional Innovation Agency, Ulsan Industry Promotion Techno Park)
Son, Hee-Jong (Water Quality Research Institute, Waterworks Headquarter)
Sohn, In-Shik (Division of Construction Engineering, Pukyong National University)
Publication Information
Korean Chemical Engineering Research / v.45, no.5, 2007 , pp. 500-505 More about this Journal
Abstract
The objectives of this research were to (1) identify the membrane fouling potential due to different fractions of NOM (2) correlate the physicochemical properties of NOM and membranes with the adsorption of humic substances on membrane (4) find out the effect of membrane physical and chemical washing according to membrane material. The static adsorption test and adsorption test showed that hydrophobic organics adsorbed much more quickly than hydrophilic organics. In case of the effect of membrane properties on the adsorption of organic fractions, the adsorption rate ratio(a) of hydrophobic membrane (0.016, 0.077) was greater than that of hydrophilic membrane (0.010, 0.033) regardless of the kind of organic fractions. This suggests that the UF membrane fouling were occurred mainly by internal pore size decreasing due to adsorption of organic into pore surface for hydrophobic membrane, and by sieving of organics and forming a gel layer on the membrane surface for hydrophilic membrane. In conclusion, the decrease in the pore volume, which was caused by the organic adsorption into the internal pore, was greater with the hydrophobic membrane than with the hydrophilic membrane. In case of the effect of membrane properties on permeate flux, the rate of flux decline for the hydrophobic membrane was significantly greater than that for the hydrophilic membrane.
Keywords
Membrane Fouling; Hydrophilic; Hydrophobic; Membrane Adsorption; Flux;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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