Title:
【発明の名称】化石燃料の脱硫化用の改良された微生物触媒
Document Type and Number:
Japanese Patent JP2002522098
Kind Code:
A
Abstract:
Sulfur is removed from fossil fuels containing sulfur by incubation of the fuel with microbes isolated and purified from soil or water that selectively extract the sulfur without apparently utilizing the fuel as a carbon or energy source. Preferred biodesulfurization microbes remove at least about 20% of the sulfur. The microbes are obtained in a multi-step screen that first selects microorganisms that utilize dibenzothiophene (DBT) as a sole source of sulfur, and then tests these in incubations with fossil fuels; organisms that desulfurize DBT without metabolizing the DBT phenyl ring structures and desulfurize fuels only when a second carbon source devoid of sulfur is present are identified and employed in desulfurization processes. Two cultures, CDT-4 and CDT-4b, were particularly efficacious in the desulfurization of liquid fossil fuels.
Inventors:
Olson, Gregory Jay
Application Number:
JP2000565195A
Publication Date:
July 23, 2002
Filing Date:
August 10, 1999
Export Citation:
Assignee:
Clean Diesel Technologies, Inc.
International Classes:
C12Q1/02; C10G32/00; C12N1/20; C12P1/04; C12P3/00; C12P5/00; C12P7/22; C12S1/02; C12R1/365; (IPC1-7): C12N1/20; C10G32/00; C12Q1/02
Attorney, Agent or Firm:
Takehiko Saito (1 outside)