Photocatalytic filter with fiber glass mat carrier

Details Photocatalytic filter with fiber glass mat carrier Photocatalytic filter with fiber glass mat carrier

B - Operations, Transporting

01

J

B01J 35/02 (2006.01) B01J 19/12 (2006.01) B01J 32/00 (2006.01) B01J 35/00 (2006.01) B01J 35/06 (2006.01)

Patent

CA 2349552

A matrix for use in a method of photocatalytically decomposing organic compounds in a fluid includes a fiber glass mat substrate carrying a photocatalytic material. The fiber glass mat is made of randomly oriented glass fibers that have been substantially filamentized and needled whereby the filaments are interlocked. Adhesion of the photocatalytic material to the substrate is provided without requiring heat cleaning of the fiber glass by controlling the organic content of the fiber glass mat to be less than 1.0 percent by weight as measured by loss on ignition. This is achieved by using sizing compositions that preferably have little or no film forming polymer content.

L'invention concerne une matrice pouvant être utilisée avec un procédé photocatalytique destiné à décomposer des composés organiques dans un fluide, qui comprend un substrat constitué d'un mat en fibres de verre portant un matériau photocatalytique. Le mat est formé de fibres de verre à orientation aléatoire, qui ont été sensiblement filamentées et aiguilletées de façon à entrecroiser lesdits filaments. L'adhésion du matériau photocatalytique sur le substrat ne nécessite pas de nettoyage thermique des fibres de verre et la teneur en matières organiques du mat est maintenue au-dessous de 1,0 % en poids, pourcentage obtenu par détermination des pertes à l'incinération. A cet effet, on utilise des compositions d'encollage ayant de préférence une teneur faible ou nulle en polymères filmogènes.

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