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Machine translation
1. (WO1996006677) PROCESS FOR REDUCING THE CONCENTRATION OF MULTIVALENT CATIONS IN AQUEOUS SOLUTIONS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1996/006677    International Application No.:    PCT/FR1995/001063
Publication Date: 07.03.1996 International Filing Date: 08.08.1995
Chapter 2 Demand Filed:    02.02.1996    
IPC:
B01J 47/10 (2006.01), C02F 1/28 (2006.01), C23C 18/16 (2006.01), C25D 21/22 (2006.01)
Applicants: ELF ATOCHEM S.A. [FR/FR]; 4/8, cours Michelet, F-92800 Puteaux (FR) (For All Designated States Except US).
BIVER, Claudine [FR/FR]; (FR) (For US Only).
CUER, Jean-Pierre [FR/FR]; (FR) (For US Only).
DELMAS, François [FR/FR]; (FR) (For US Only).
GARCIA, François [FR/FR]; (FR) (For US Only)
Inventors: BIVER, Claudine; (FR).
CUER, Jean-Pierre; (FR).
DELMAS, François; (FR).
GARCIA, François; (FR)
Agent: HAICOUR, Philippe; Elf Atochem S.A., Dépt. Propriété Industrielle, Cours Michelet - La Défense 10, F-92091 Paris-La Défense Cédex (FR)
Priority Data:
94/10318 26.08.1994 FR
Title (EN) PROCESS FOR REDUCING THE CONCENTRATION OF MULTIVALENT CATIONS IN AQUEOUS SOLUTIONS
(FR) PROCEDE POUR ABAISSER LA TENEUR EN CATIONS MULTIVALENTS DE SOLUTIONS AQUEUSES
Abstract: front page image
(EN)The process comprises the circulation through a column of the liquid to be purified and a superabsorbent, preferably of the polyacrylic type, the rising speed of the liquid being selected so that, in the column, a superabsorbent simply swollen is in a stationary dynamic condition, while the superabsorbent charged with multivalent ions forms sediments at the base of the column. Application to the treatment of water used for rinsing parts which have been subjected to a nickeling treatment.
(FR)Le procédé consiste à faire transiter dans une colonne le liquide à épurer et un superabsorbant, de préférence de type polyacrylique, la vitesse ascensionnelle du liquide étant choisie de façon telle que dans la colonne, le superabsorbant simplement gonflé soit en régime de dynamique stationnaire, tandis que le superabsorbant chargé d'ions multivalents sédimente au pied de colonne. Application au traitement des eaux de rinçage des pièces ayant subi un traitement de nickelage.
Designated States: AM, AU, BB, BG, BR, BY, CA, CN, CZ, EE, FI, GE, HU, JP, KG, KP, KR, KZ, LK, LR, LT, LV, MD, MG, MN, MX, NO, NZ, PL, RO, RU, SI, SK, TJ, TT, UA, US, UZ, VN.
African Regional Intellectual Property Organization (KE, MW, SD, SZ, UG)
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: French (FR)
Filing Language: French (FR)