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1. (WO2009133074) METHOD FOR PURIFYING AQUEOUS COMPOSITIONS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/133074    International Application No.:    PCT/EP2009/055073
Publication Date: 05.11.2009 International Filing Date: 27.04.2009
IPC:
C02F 1/60 (2006.01), C02F 1/52 (2006.01), C02F 1/66 (2006.01), C02F 9/00 (2006.01)
Applicants: SOLVAY (Société Anonyme) [BE/BE]; Rue du Prince Albert, 33 B-1050 Bruxelles (BE) (For All Designated States Except US).
PASTACALDI, Alessandra [IT/IT]; (IT) (For US Only)
Inventors: PASTACALDI, Alessandra; (IT)
Agent: VANDE GUCHT, Anne; (BE)
Priority Data:
0852897 29.04.2008 FR
Title (EN) METHOD FOR PURIFYING AQUEOUS COMPOSITIONS
(FR) PROCÉDÉ POUR PURIFIER DES COMPOSITIONS AQUEUSES
Abstract: front page image
(EN)Method for purifying an aqueous composition by removing silicon therefrom, according to which a compound comprising aluminium is added to the aqueous composition in order to obtain a molar aluminium content greater than the molar silicon content in said composition, the pH of the composition is controlled and maintained at a value higher than or equal to 8 and lower than or equal to 10, and the precipitate formed is separated from the aqueous suspension obtained.
(FR)L'invention porte sur un procédé pour purifier une composition aqueuse par le retrait de silicium de celle-ci. Selon le procédé, un composé contenant de l'aluminium est ajouté à la composition aqueuse afin d'obtenir une teneur en aluminium molaire supérieure à la teneur en silicium molaire dans ladite composition, le pH de la composition étant régulé et maintenu à une valeur supérieure ou égale à 8 et inférieure ou égale à 10, et le précipité formé est séparé de la suspension aqueuse obtenue.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)