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1. (WO2018182441) MULTI-LAYERED MEMBRANE FOR OIL/WATER SEPARATION

Pub. No.:    WO/2018/182441    International Application No.:    PCT/QA2017/050001
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 31 01:59:59 CEST 2017
IPC:
Applicants: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENT
Inventors: LIU, Zhaoyang
WANG, Kui
SATHTHASIVAM, Jayaprakash
EL-MASRI, Dema
HILAL, Nidal
Title: MULTI-LAYERED MEMBRANE FOR OIL/WATER SEPARATION
Abstract:
The multi-layered membrane (100) for separating oil and water includes a porous top layer (110), a porous bottom layer (130), and a particulate middle layer (120) positioned between the top layer (110) and the bottom layer (130), the middle layer (120) being hydrophobic and adapted for adsorbing oil, such as trace amounts of oil, that may pass through the top layer (110). The top layer (110) and the bottom layer (130) are hydrophilic and oleophobic. While the membrane (100) does not require any external pressure other than the gravitational forces exerted on the oil/water mixture W to drive the filtration of the oil/water mixture W through the membrane (100), the filtration can be driven by a vacuum or other type of external pressure.