Acid stable membranes for nanofiltration

Details Acid stable membranes for nanofiltration Acid stable membranes for nanofiltration

B - Operations, Transporting

01

D

B01D 61/00 (2006.01) B01D 61/02 (2006.01) B01D 69/02 (2006.01) B01D 69/12 (2006.01) B01D 71/56 (2006.01) B01D 71/66 (2006.01) B01D 71/68 (2006.01) C08G 75/30 (2006.01) C08L 81/10 (2006.01) C22B 3/22 (2006.01) C22B 15/00 (2006.01)

Patent

CA 2409605

Semi-permeable membranes are described that allow for the efficent processing of many liquid based feed solutions, particularly those that contain acids. The membranes of this invention are able to process such feeds with high permeate rates while maintaining excellent retention of dissolved metals, cations, and organic compounds, even in the presence of hot concentrated acids. The semi-permeable membranes of this invention are able to conduct such separations for a useful period of time due to their chemical stability towards acids and their ability to permeate acids.

L'invention porte sur des membranes semi-perméables qui permettent de traiter efficacement de nombreuses solutions de charges liquides, notamment celles contenant des acides. Ces membranes sont capables de traiter ces charges qui ont des débits de perméation élevés tout en conservant une excellente rétention des métaux dissous, des cations et des composés organiques, même en présence d'acides concentrés à chaud. Les membranes semi-perméables de cette invention sont capables d'effectuer ces séparations sur une durée utile du fait de leur stabilité chimique aux acides et de leur capacité à filtrer les acides.

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