Wendy J Davis-Hoover

US Patent:

6489157, Dec 3, 2002

Filed:

Apr 17, 2000

Appl. No.:

09/550613

Inventors:

Harry J. Guttman - Silversprings MD
James A. Ryan - Cincinnati OH
Wendy Jo Davis-Hoover - Wyoming OH

Assignee:

The Government of the United States of America as represented by the Administrator of the U.S. Environmental Protection Agency - Washington DC

International Classification:

C12N 120

US Classification:

4352536, 4352525

Abstract:

A medium for culturing microorganisms in the presence of Pb uses as a phosphate component, an O-phosphate-L-amino acid, to provide a source of phosphate for the microorganisms so as to avoid precipitating lead.

US Patent:

7252986, Aug 7, 2007

Filed:

Mar 25, 2003

Appl. No.:

10/395893

Inventors:

Wendy Jo Davis-Hoover - Wyoming OH, US
Stephen J. Vesper - Kettering OH, US

Assignee:

U. S. Environmental Protection Agency - Washington DC

International Classification:

C12S 13/00

US Classification:

4352625, 4051285, 210610, 210747, 166246

Abstract:

A bioremediation of subsurface soil formations contaminated with hazardous wastes is achieved by hydraulic fracturing of the subsurface soil formation with simultaneous introduction of sodium percarbonate coated with polyvinylidene chloride as a solid oxygen source (SOS) for establishing colonies of the biodegrading bacteria within the fractures of the soil formation.

US Patent:

20020015986, Feb 7, 2002

Filed:

Oct 5, 2001

Appl. No.:

09/970643

Inventors:

Wendy Davis-Hoover - Wyoming OH, US
Stephen Vesper - Kettering OH, US

International Classification:

C12N011/08
C12N001/00
C12N001/20

US Classification:

435/180000, 435/875000, 435/262500

Abstract:

Bioavailability of lead and other heavy metals in the environment may be reduced by addition of microorganisms which sequester lead from the environment in the presence of phosphate. The microorganisms are highly mobile and are, therefore, capable of scavenging a material for lead, which they then sequester. The method basically consists of reducing bioavailability of lead in the environment by addition of strain CHL004 to said environment in the presence of phosphate which contains at least stoichiometric equivalent amounts of phosphate to lead.

US Patent:

20030134405, Jul 17, 2003

Filed:

Nov 14, 2002

Appl. No.:

10/293362

Inventors:

Harry Guttman - Silversprings MD, US
James Ryan - Cincinnati OH, US
Wendy Davis-Hoover - Wyoming OH, US

International Classification:

C12N001/20
B09B003/00

US Classification:

435/244000, 435/253600, 435/262500

Abstract:

A medium for culturing microorganisms includes at least one compound which can be used as a source of phosphorus for microorganisms but which at least one compound will not precipitate Pb ions, so that the medium does not form a precipitate in the presence of up to about 25 mM Pb ions. Preferred compounds are O-phospho-L-amino acids. A buffer may be included in the medium. The medium is particularly well suited for remediating lead contaminated site by bioremediation.

US Patent:

20080096188, Apr 24, 2008

Filed:

Oct 19, 2006

Appl. No.:

11/583055

Inventors:

Wendy Jo Davis-Hoover - Wyoming OH, US

Assignee:

U.S. Environmental Protection Agency EPA - Washington DC

International Classification:

C12Q 1/70
C12Q 1/68

US Classification:

435 5, 435 6

Abstract:

Determining when a landfill is stabilized by comparing the biological signature of a landfill over a predetermined time period with that of a known stabilized landfill.

US Patent:

63001217, Oct 9, 2001

Filed:

Apr 26, 1999

Appl. No.:

9/297235

Inventors:

Wendy J. Davis-Hoover - West Chester OH
Stephen J. Vesper - Kettering OH

Assignee:

The United States of America as represented by the Administrator of the
United States Environmental Protection Agency - Washington DC

International Classification:

B09B 300
C12N 120

US Classification:

4352625

Abstract:

Bioavailability of lead and other heavy metals in the environment may be reduced by addition of microorganisms which sequester lead from the environment in the presence of phosphate. The microorganisms are highly mobile and are, therefore, capable of scavenging a material for lead, which they then sequester. The method basically consists of reducing bioavailability of lead in the environment by addition of Pseudomonas aeruginosa strain CHL004 (ATCC 55937) to said environment in the presence of phosphate which contains at least stoichiometric equivalent amounts of phosphate to lead.

US Patent:

58587632, Jan 12, 1999

Filed:

Apr 25, 1997

Appl. No.:

8/847507

Inventors:

Wendy J. Davis-Hoover - West Chester OH
Stephen J. Vesper - Kettering OH

Assignee:

The United States of America as represented by the Administrator of the
Environmental Protection Agency - Washington DC
University of Cincinnati - OH

International Classification:

C12N 120
C12N 900
C12N 924
C12P 104

US Classification:

4352524

Abstract:

The invention is a consortium of thermophilic methanotrophic organisms in culture medium containing said consortium reproduced at temperatures of 50. degree. C. to 80. degree. C. , said consortium being comprised primarily of ovoid or rod-shaped organisms. The consortium can be instilled into soil or water to degrade pollutants, especially hydrocarbons and substituted hydrocarbons.