SONGGuo-cheng,DINGChun.Superhydrophilic Modification of Polyester Membrane and Its Oil-Water Separation Performance[J].China Water & Wastewater,2022,38(11):49-55.
Superhydrophilic Modification of Polyester Membrane and Its Oil-Water Separation Performance
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第11期
Page:
49-55
Column:
Date of publication:
2022-06-01
- Keywords:
- polyester membrane; anti-fouling; CaCO3; oil-water separation
- Abstract:
- To improve the anti-fouling performance of polyester membrane in filtration and separation, polyvinylpyrrolidone (PVP) was firstly deposited and cross-linked on the surface of the membrane, and then calcium carbonate mineral was deposited and coated on the surface of the membrane by dopaminine self-polymerization adsorption and alternating soaking mineralization technology. After the mineralized modification, mineral coating was deposited relatively uniformly on the membrane surface, and the composite membrane had superhydrophilic properties. The recovery ratio of water flux reached 89% and 88% respectively when the modified membrane was applied to filter and separate the starch solution and oil-water emulsion. The anti-fouling performance of the composite membrane was obviously improved compared with that before the modification, and its reutilization performance was good. On the whole, the polyester composite membrane with mineralization rate of 11.4% had the best modification performance.
Last Update:
2022-06-01