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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.5.440

Composite Membrane Preparation for Low Pressure Using Salting-Out Method and Its Application to Nanofiltration Process  

Jeon, Yi Seul (Department of Advanced Material and Chemical Engineering, Hannam University)
Rhim, Ji Won (Department of Advanced Material and Chemical Engineering, Hannam University)
Publication Information
Membrane Journal / v.25, no.5, 2015 , pp. 440-446 More about this Journal
Abstract
Nanofiltration composite membranes were prepared through the ion exchange polymers coating onto the porous microfiltration polyethylene (PE) membrane surfaces the salting-out and phase separated and pressurization (PSP) methods. The existence of coating on the surfaces was confirmed by the scanning electronic microscopy. The resulting membranes were characterized under the various conditions, such as the coating material, coating time, ionic strength etc., in terms of flux and rejection for NaCl 100 ppm solution. Under the same coating conditions of 10,000 ppm coating solution concentration and 3 atm coating pressure for both the coating materials of PEI and PSSA_MA, the flux 91.2 LMH and rejection 64.6% were obtained for PEI whereas 122.7 LMH and 38.1% were observed for PSSA_MA. From this study, it may be concluded that the composite membrane preparation is possible.
Keywords
nanofiltration membrane (NF); salting-out; phase separated and pressurization (PSP); polyethyleneimine (PEI); poly(4-styrene- sulfonic acid-co-maleic acid) (PSSA_MA);
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Times Cited By KSCI : 5  (Citation Analysis)
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