B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 69/10 (2006.01) B01D 61/36 (2006.01) B01D 69/12 (2006.01) B01D 71/08 (2006.01)
Patent
CA 2355437
A composite membrane is provided comprising a porous substrate membrane coated with a membrane comprising N-acetylated chitosan. The N-acetylated chitosan is characterized by a degree of N-acetylation greater than 50% and less than 90%. The porous substrate membrane includes any of polyvinylidene fluoride, polysulfone, and a ceramic. In this respect, composite membrane is provided comprising: a first layer including N-acetylated chitosan, and a second layer including a porous substrate membrane, wherein the first layer is coated upon the second layer. A method of forming a composite membrane is also provided comprising the steps of: forming a porous substrate membrane, depositing chitosan solution on the porous substrate membrane to form a first intermediate, drying the first intermediate to form an intermediate composite membrane including a chitosan membrane, and acetylating the chitosan membrane. A method for separating a liquid mixture including a polar liquid and a non- polar liquid is further provided, comprising the steps of: providing a composite membrane comprising a first layer including N-acetylated chitosan, and a second layer including a porous substrate membrane, wherein the first layer is deposited upon the second layer, and contacting the mixture with the first layer of the composite membrane.
Huang Robert Y.m.
Moon Go Young
Pal Rajinder
Gowling Lafleur Henderson Llp
University Of Waterloo
LandOfFree
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