(19)

(11)

EP 2 152 382 A2

(12)

(88) Date of publication A3: 04.12.2008 (43) Date of publication: 17.02.2010 Bulletin 2010/07 (21) Application number: 08737189.4 (22) Date of filing: 16.04.2008

(51) International Patent Classification (IPC):  B01D 39/16(2006.01) (86) International application number: PCT/GB2008/050264 (87) International publication number: WO 2008/125885 (23.10.2008 Gazette 2008/43)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 16.04.2007 GB 0707283 (71) Applicant: PSI Global Ltd Bowburn, Durham DH6 5AD (GB)	(72) Inventor: WALTL, Hans, Gunter, Alexander Richmond North Yorkshire DL10 6DN (GB) (74) Representative: Lucas, Brian Ronald  Lucas & Co. 135 Westhall Road Warlingham Surrey CR6 9HJ Warlingham Surrey CR6 9HJ (GB)