Post-UVO effect on Polyvinyl Chloride membranes for removal of oilpollution from aquatic environment

In the present study, polyvinyl chloride (PVC) membranes were made using the nonsolvent-inducedphase separation (NIPS) method. These membranes were modified by ultraviolet ozone (UVO)treatment at different times. With UVO modification, hydrophilic groups entered the membranesurface and the hydrophilicity of it improved. The morphology of surface and cross-section of themembranes investigated by field emission scanning electron microscopy (FESEM). The surfacechemical composition was analyzed using Fourier transform infrared spectroscopy (FTIR). The purewater flux and water/oil emulsion flux also were evaluated. The results showed that treated PVCmembranes have higher fluxes (up to ۹۶ L/m۲.h) for pure water and oil/water emulsion. In addition,the turbidity measurement of the oil/water emulsion permeate showed that UVO treatment waseffective on the performance of PVC membranes for oil rejection. Therefore, the present treatmentcan pave the way to achieve cost-effective membranes for water and oil separation.

کلیدواژه ها:

NIPS ، PVC membrane ، UVO treatment ، oil/water emulsion