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1. (WO2009137708) RECOVERY OF ORGANIC ACIDS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/137708    International Application No.:    PCT/US2009/043188
Publication Date: 12.11.2009 International Filing Date: 07.05.2009
IPC:
C12P 7/54 (2006.01)
Applicants: ZEACHEM INC. [US/US]; 1490 O'Brien Drive Menlo Park, CA 94025 (US) (For All Designated States Except US).
MARIANSKY, Gal [US/US]; (US) (For US Only).
CARLIN, Kevin [US/US]; (US) (For US Only).
VERSER, Dan, W. [US/US]; (US) (For US Only)
Inventors: MARIANSKY, Gal; (US).
CARLIN, Kevin; (US).
VERSER, Dan, W.; (US)
Agent: CONNELL, Gary, J.; (US)
Priority Data:
61/051,243 07.05.2008 US
Title (EN) RECOVERY OF ORGANIC ACIDS
(FR) RÉCUPÉRATION D'ACIDES ORGANIQUES
Abstract: front page image
(EN)A method is disclosed for the recovery of an organic acid from a dilute salt solution in which the cation of the salt forms an insoluble carbonate salt. An amine and CO2 are introduced to the solution to form the insoluble carbonate salt and a complex between the acid and the amine. The acid/amine complex is thermally dissociated, or "cracked", in the presence of a water immiscible solvent in which the amine is selectively soluble and in which the acid is not appreciably soluble. The organic acid may then be recovered from the water by any suitable means such as distillation, reactive distillation, extraction, or reactive extraction.
(FR)L'invention concerne un procédé pour la récupération d'un acide organique à partir d'une solution de sel dilué dans lequel le cation du sel forme un sel carbonate insoluble. Une amine et du CO2 sont introduits dans la solution pour former le sel carbonate insoluble et un complexe entre l'acide et l'amine. Le complexe acide/amine est thermiquement dissocié, ou « craqué », en présence d'un solvant immiscible dans l'eau dans lequel l'amine est sélectivement soluble et dans lequel l'acide n'est pas sensiblement soluble. L'acide organique peut ensuite être récupéré de l'eau par tout moyen approprié tel que la distillation, la distillation réactive, l'extraction ou l'extraction réactive.
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)