Title:
PRODUCTION OF ORGANIC ACID FROM ORGANIC WASTE
Document Type and Number:
Japanese Patent JP3644842
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To efficiently produce valuable sources comprising org. acids such as lactic acid, fatty acids, amino acids, EPA and DHA by treating organic wastes such as marine products such as fish waste and marine processed products with supercritical water or subcritical water.
SOLUTION: Treatment with supercritical water is carried out under the conditions of at about ≥375°C, at about ≥22.1 MPa and for about 1 to 10 min reaction time. The conditions vary depending on the kinds of the objective org. wastes, their states, treating amts. or the like and more properly, for example, to make the conditions at about 375 to 400°C and at about 22.1 to 24.0 MPa is taken into consideration. The treatment with subcritical water is carried out under conditions of at about 200 to 300°C and at about 1.5 to 15 MPa. More properly, for example, at about 230 to 280°C and at about 1.9 to 5.9 MPa. After the treatment, the solid content such as residual bones is separated by filtering, and the liquefied org. material is separated into an oil contents, fatty acids, lactic acid or the like.
Inventors:
Hiroyuki Yoshida
Application Number:
JP9032899A
Publication Date:
May 11, 2005
Filing Date:
March 30, 1999
Export Citation:
Assignee:
Japan Science and Technology Agency
International Classes:
C07B61/00; C07C51/16; C07C53/02; C07C53/08; C07C55/10; C07C59/08; C07C59/265; C07C229/00; C11B13/00; B09B3/00; (IPC1-7): B09B3/00; C07B61/00; C07C51/16; C07C53/02; C07C53/08; C07C55/10; C07C59/08; C07C59/265; C07C229/00; C11B13/00
Domestic Patent References:
| JP9268166A | ||||
| JP551586A | ||||
| JP9122629A |
Attorney, Agent or Firm:
Toshio Nishizawa