Filtration membrane and methods of use and manufacture thereof
AssigneeValorbec Societe en Commandite
InventorsElnazsadat Ale Ebrahim, Christian Moreau, Ali Dolatabadi, Md. Saifur Rahaman, Fariba Tarasi
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Abstract
A filtration membrane is provided. It comprises a porous support substrate and a porous active layer on top of the support substrate, wherein the active layer is formed of a network of interconnected, randomly arranged ceramic splats with ceramic particles occupying interstices between the splats, and wherein free spaces between the particles define a network of interconnected pores extending through the thickness of the active layer. There are also provided a method of filtering a feed using the membrane and a method of manufacturing the membrane by suspension plasma spraying.
Claims20
A filtration membrane comprising a porous support substrate and a porous active layer on top of the support substrate,
- wherein the active layer is formed of a network of interconnected, randomly arranged ceramic splats with ceramic particles occupying interstices between the splats, and
- wherein free spaces between the particles define a network of interconnected pores extending through the thickness of the active layer,
- wherein the splats are thin lamellae and the particles are spheroidal,
- wherein the splats are between about 50 nm and about 1 μm thick and between about 0.2 μm and about 5 μm in width and length,
- wherein the particles have an average particle size between about 0.02 μm and about 5 μm,
- wherein the splats and the particles are made of a same material, and
- wherein a splats:particles weight ratio in the active layer is about 30:70 and about 70:30.
Dependencies are inferred from the claim text.