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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2018.28.5.361

Preparation and Performance of Low Pressure PVDF Nano-composite Hollow Fiber Membrane Using Hydrophilic Polymer  

Park, Cheol Oh (Department of Advanced Materials and Chemical Engineering, Hannam University)
Rhim, Ji Won (Department of Advanced Materials and Chemical Engineering, Hannam University)
Publication Information
Membrane Journal / v.28, no.5, 2018 , pp. 361-367 More about this Journal
Abstract
In this study, the nanofiltration (NF) composite membranes for the low pressure use were prepared using polyvinylidene fluoride (PVDF) hollow fiber membrane as a supporter. Poly styrene sulfonic acid (PSSA) and polyethyleneimine (PEI) were coated onto the PVDF membrane by both layer-by-layer and salting-out methods. To characterize the prepared NF membranes in terms of the flux and salt rejection, 100 mg/L feed solutions of NaCl, $MgCl_2$, and $CaSO_4$ were used at the flow rate of 1 L/min and the operating pressure of 2 bar at room temperature. The NF membranes coated with 20,000 ppm PSSA (ionic strength 1.0) solution for 3 minutes and then 30,000 ppm (ionic strength 0.1) solution for 1 minute were observed the best performance. The permeability and salt rejection were 38.5 LMH, 57.1% for NaCl, 37.9 LMH and 90.2% for $MgCl_2$ and 32.4 LMH and 54.6% for $CaSO_4$, respectively.
Keywords
polyvinylidene fluoride (PVDF); hollow fiber membrane; nanofiltration; salting-out effect; layer-by-layer;
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Times Cited By KSCI : 1  (Citation Analysis)
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