Forward osmosis separation processes

Details Forward osmosis separation processes Forward osmosis separation processes

B - Operations, Transporting

01

D

B01D 61/02 (2006.01) C02F 1/44 (2006.01)

Patent

CA 2728503

Separation processes using engineered osmosis are disclosed generally involving the extraction of solvent from a first solution to concentrate solute by using a second concentrated solution to draw the solvent from the first solution across a semi-permeable membrane. One or both of the solute and solvent may be a desired product. Enhanced efficiency may result from using low grade waste heat from industrial or commercial sources.

L'invention porte sur des procédés de séparation faisant appel à une osmose artificielle, lesquels procédés consistent généralement à extraire un solvant d'une première solution afin de concentrer le soluté au moyen d'une seconde solution concentrée qui extrait le solvant de la première solution à travers une membrane semi-perméable. Le soluté et le solvant peuvent être l'un et/ou l'autre le produit désiré. On peut améliorer l'efficacité du procédé en utilisant la chaleur résiduelle de basse énergie de sources industrielles ou commerciales.

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