| US 7,364,880 B2 | ||
| Integration of at least two processes to re-use acid | ||
| Charles David Ray, Ottumwa, Iowa (US); John A. Bohlmann, Ottumwa, Iowa (US); Don Grunig, Oskaloosa, Iowa (US); James R. Trinkle, Bussey, Iowa (US); and Michael Brandon Bassett, Sparks, Nev. (US) | ||
| Assigned to Cargill, Incorporated, Wayzata, Minn. (US) | ||
| Appl. No. 10/503,018 PCT Filed Jan. 31, 2003, PCT No. PCT/US03/02970 § 371(c)(1), (2), (4) Date Jul. 28, 2004, PCT Pub. No. WO03/066186, PCT Pub. Date Aug. 14, 2003. |
||
| Claims priority of provisional application 60/353718, filed on Feb. 01, 2002. | ||
| Prior Publication US 2005/0148052 A1, Jul. 07, 2005 | ||
| Int. Cl. C12P 19/28 (2006.01); C12P 7/48 (2006.01); C12M 1/00 (2006.01) | ||
| U.S. Cl. 435—84 [435/144; 435/289.1] | 10 Claims |
| 1. A method for combining methods to re-use an acid, the method comprising:
(a) forming glucosamine by contacting a chitin-containing biomass with a first acid;
(b) collecting acid remaining after the first acid contacts the chitin-containing biomass;
(c) separating the collected acid of (b) from glucosamine present therein;
(d) providing a spent ion-exchange resin; and
(e) regenerating the spent ion-exchange resin using the acid separated from the glucosamine.
|