The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 1978
Filed:
Aug. 04, 1977
Applicant:
Inventors:
Teh F Yen, Altadena, CA (US);
John E Findley, San Gabriel, CA (US);
Assignee:
University of Southern California, Los Angeles, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
C02C / ;
U.S. Cl.
CPC ...
210 16 ; 210-2 ; 210 11 ; 210 15 ; 195-2 ;
Abstract
Anaerobic bacteria, e.g., of the Desulfovibrio family, are added to oil shale retort water producing an increase in cell biomass and reducing sulfate ions present to sulfide. The cell biomass is aggregated into a flocculent mass and removed. The sulfide can be oxidized and recycled to neutralize the retort water. Oxidation of sulfide to sulfate can be accomplished by addition of aerobic bacteria, e.g., of the Thiobacillus family.