(19)

(11)

EP 0 843 651 A1

(12)

(43) Date of publication: 27.05.1998 Bulletin 1998/22 (21) Application number: 96926265.0 (22) Date of filing: 12.08.1996

(51) International Patent Classification (IPC):  B01D 39/ 02( . ) C02F 3/ 10( . ) B01J 19/ 30( . ) (86) International application number: PCT/AU1996/000504 (87) International publication number: WO 1997/007063 (27.02.1997 Gazette 1997/10)

(84) Designated Contracting States: GB (30) Priority: 11.08.1995 AU 1995PN04747 (71) Applicant: Berg Bennett And Associates Pty. Ltd. Birchgrove, NSW 2041 (AU)	(72) Inventor: BERG, Keith, Edward Birchgrove, NSW 2041 (AU) (74) Representative: Kennedy, David Anthony  Kennedy & Co., Station House, 34 St. Enoch Square Glasgow G1 4DF Glasgow G1 4DF (GB)