Deodorization of sewage sludge-derived oils

Details Deodorization of sewage sludge-derived oils Deodorization of sewage sludge-derived oils

1991-12-13

1993-07-06

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Deodorizing

554205, 210756, 210916, 208190, 208223, 208240, 208254R, 208348, 208362, C10G 1700, C10G 1708

Patent

active

052251594

ABSTRACT:
A method is provided for treating a sewage sludge-derived oil having a particular chemical composition, to reduce its odor. The method includes the first step of distilling the sewage sludge-derived oil to 150.degree. C. to remove water and volatile organic components, and then the essential step of circulating a gas consisting essentially of carbon dioxide gas therethrough.

REFERENCES:
patent: 1999041 (1935-04-01), Dunstan
patent: 3977972 (1976-08-01), Bloch
patent: 3992285 (1976-11-01), Hutchins
patent: 4406778 (1983-09-01), Borza et al.
patent: 4518489 (1985-05-01), Hitzman
patent: 4522707 (1985-06-01), Kriegel et al.
L. Hartman and Daniela Reimann as described in "Preparation of Medium Chain Triglycerides, With the Use of Physical Refining" in Fett Wissenshaft and Technologie, 1989, 91 (81 p. 324).

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