(19)

(11)

EP 0 636 109 A1

(12)

(43) Date of publication: 01.02.1995 Bulletin 1995/05 (21) Application number: 93908169.0 (22) Date of filing: 16.04.1993

(51) International Patent Classification (IPC):  B01J 47/ 00( . ) C02F 1/ 42( . ) B01J 47/ 10( . ) (86) International application number: PCT/NL1993/000082 (87) International publication number: WO 1993/021114 (28.10.1993 Gazette 1993/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL PT SE (30) Priority: 16.04.1992 NL 19920000707 (71) Applicants: ENVIMAG B.V. NL-6531 JC NIJMEGEN (NL) TAUW MILIEU B.V. NL-7417 DE Deventer (NL)

(72) Inventors: DE REUVER, Johannes, Laurentius NL-6523 RB Nijmegen (NL) VAN VELSEN, Aloysius, Fredericus, Maria NL-6704 AG Wageningen (NL) KOK, Jan, Bart NL-6708 LN Wageningen (NL) URLINGS, Leonardus, Gerardus, Catherina, Mathias NL-3871 TB Hoevelaken (NL) (74) Representative: Eveleens Maarse, Pieter, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 NL-2517 GK Den Haag NL-2517 GK Den Haag (NL)