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1. (WO2008100610) WATER PURIFICATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2008/100610    International Application No.:    PCT/US2008/002092
Publication Date: 21.08.2008 International Filing Date: 14.02.2008
IPC:
C02F 1/52 (2006.01), C02F 1/26 (2006.01), B01D 11/04 (2006.01), B01D 17/02 (2006.01), B01D 21/24 (2006.01)
Applicants: BATTELLE MEMORIAL INSTITUTE [US/US]; 505 King Avenue, Columbus, OH 43201-2693 (US) (For All Designated States Except US).
MONZYK, Bruce, F. [US/US]; (US) (For US Only).
VON FAHNESTOCK, F., Michael [US/US]; (US) (For US Only).
ROSE, James, K. [US/US]; (US) (For US Only).
CONKLE, H. Nick [US/US]; (US) (For US Only).
WANG, Ming [US/US]; (US) (For US Only).
CHAUHAN, Satya, P. [US/US]; (US) (For US Only).
BRUCE, Ruey, K. [US/US]; (US) (For US Only).
HIGHSMITH, Tenisha [US/US]; (US) (For US Only)
Inventors: MONZYK, Bruce, F.; (US).
VON FAHNESTOCK, F., Michael; (US).
ROSE, James, K.; (US).
CONKLE, H. Nick; (US).
WANG, Ming; (US).
CHAUHAN, Satya, P.; (US).
BRUCE, Ruey, K.; (US).
HIGHSMITH, Tenisha; (US)
Agent: WIESMANN, Klaus, H.; Battelle Memorial Institute, 505 King Avenue, Columbus, OH 43201-2693 (US)
Priority Data:
60/901,624 14.02.2007 US
11/809,893 31.05.2007 US
Title (EN) WATER PURIFICATION
(FR) PURIFICATION DE L'EAU
Abstract: front page image
(EN)The invention provides an efficient method to purify an aqueous solution, typically mine drainage water, especially of anions and cations present in the aqueous solution as dissolved solids, the anions and cations are removed by treatment with a positively charged extractant having at least eight carbon atoms, whereby an unstable emulsion is formed; the unstable emulsion is allowed to break into an extract phase loaded with the anions and cations, and a water phase depleted in anions and cations; a floe inherently forms in the loaded extractant phase and then the loaded extractant phase and floe are separated from the purified water and treated to remove the anions and cations as concentrated useful products; the treated aqueous phase now reduced in anion and/or cation content is also separated from the emulsion as a purified aqueous solution. The extractant phase is preferably recycled. A continuous water purification process is provided.
(FR)L'invention concerne un procédé efficace pour purifier une solution aqueuse, spécifiquement l'eau de drainage minier, en particulier des anions et des cations présents dans la solution aqueuse en tant que solides dissous, les anions et les cations sont supprimés par un traitement avec un solvant d'extraction chargé positivement comportant au moins huit atomes de carbone, grâce auquel une émulsion instable se forme. L'émulsion instable est autorisée à pénétrer dans une phase d'extraction chargée d'anions et de cations et une phase aqueuse appauvrie en anions et cations; un floculat se forme de manière inhérente au cours de la phase d'extraction chargée et ensuite la phase d'extraction chargée et le floculat sont séparés de l'eau purifiée et traités pour supprimer les anions et les cations en tant que produits concentrés utiles; la phase aqueuse traitée réduite maintenant en un contenu d'anion et/ou de cation est également séparée de l'émulsion en tant solution aqueuse purifiée. La phase d'extraction est de préférence recyclée. Un processus continu de purification d'eau est fourni.
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, 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, 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)