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Citation: WEI Feng-Yu, XIAO Xiang. Demulsification of Oil-in-Water Emulsions Through Hydrophilic Cellulose Ester Membranes[J]. Chinese Journal of Applied Chemistry, ;2006, 23(8): 881-885. shu

Demulsification of Oil-in-Water Emulsions Through Hydrophilic Cellulose Ester Membranes

WEI Feng-Yu ^, ,
XIAO Xiang

1.
School of Chemical Engineering, Hefei University of Technology, Hefei 230009

Corresponding author: WEI Feng-Yu,
Received Date: 18 July 2005
Available Online: 28 October 2005
Fund Project: 合肥工业大学科学研究发展基金(030602F) (030602F)

Hydrophilic cellulose ester membranes were used to demulsify oil-in-water emulsions.The results indicate that a hydrophilic membrane can be used for the demulsification of oil-in-water(O/W) emulsions,and the demulsification efficiency can reach 67% at a transmembrane pressure of 0.3 MPa,a membrane pore size of 0.45 μm and a volumetric ratio of aqueous phase to internal oil phase of 4:1.Correspondingly,the effects of membrane fouling and cleaning were discussed,and about 80% flow resistance can be eliminated with a chemical abluent and compressed air.A demulsification mechanism was proposed.
- O/W emulsion,
- demulsification mechanism,
- membrane fouling and cleaning,
- hydrophilic cellulose ester membrane
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