(19)

(11)

EP 1 874 460 A1

(12)

(43) Date of publication: 09.01.2008 Bulletin 2008/02 (21) Application number: 05735636.2 (22) Date of filing: 18.04.2005

(51) International Patent Classification (IPC):  B01J 20/28(2006.01) B01D 17/00(2006.01) B01D 15/00(2006.01) C02F 1/40(2006.01) (86) International application number: PCT/CA2005/000585 (87) International publication number: WO 2006/110972 (26.10.2006 Gazette 2006/43)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR (71) Applicant: TORR Canada Inc. Montréal QC H3C 1V9 (CA)	(72) Inventors: PRUD'HOMME, Raymond St-Laurent, Québec H4R 3E4 (CA) FRASER, Serge Boucherville, Québec J4B 6T1 (CA) SAAD, Marc Montréal, Québec H3A 1S2 (CA)