IP Library › Granted Patent US 7,473,546
Granted Patent B2
US 7,473,546 · App. 10/712,491 · Granted Jan 6, 2009

Surfactant biocatalyst for remediation of recalcitrant organics and heavy metals

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Quick Facts
Patent No.
US 7,473,546
App. No.
10/712,491
Granted
Jan 6, 2009
Kind
B2
Abstract

Novel strains of isolated and purified bacteria have been identified which have the ability to degrade petroleum hydrocarbons including a variety of PAHs. Several isolates also exhibit the ability to produce a biosurfactant. The combination of the biosurfactant-producing ability along with the ability to degrade PAHs enhances the efficiency with which PAHs may be degraded. Additionally, the biosurfactant also provides an additional ability to bind heavy metal ions for removal from a soil or aquatic environment.

Claims (3)

1. A biologically pure bacterial strain for bioremediation of petroleum hydrocarbons, said strain selected from the group consisting of ATCC accession numbers Flexibacter cf. sancti srs, PTA-5570; Pseudomonas fredriksbergensis srs, PTA-5571; Staphylococcus warneri . Img 19417 srs, PTA-5572 ; Sphingomonas srs, PTA-5573 ; Sphingomonas sp. s37 srs, PTA-5574 ; Phylobacterium srs, PTA-5575 ; Serratia ficaria srs, PTA-5576 ; Agrobacterium tumefaciens srs, PTA-5577 ; Rhizobium sp. sdw045 srs, PTA-5578 ; Ralstonia pickettii srs, PTA-5579 ; Alcaligenes-piechaudii srs, PTA-5580; and Pseudomonas-putida biotype b srs, PTA-5581.

2. A biologically pure strain and mutants thereof, having all of the identifying characteristics of said strain, wherein said strain is capable of degrading petroleum hydrocarbons, said strain being selected from the group consisting of ATCC accession numbers Flexibacter cf. sancti srs, PTA-5570 ; Pseudomonas fredriksbergensis srs, PTA-5571 ; Staphylococcus warneri . Imp 19417 srs, PTA-5572 ; Sphingomonas srs, PTA-5573 ; Sphingomonas sp. s37 srs, PTA-5574 ; Phylobacterium srs, PTA-5575 ; Serratia ficaria srs, PTA-5576 ; Agrobacterium tumefaciens srs, PTA-5577 ; Rhizobium sp. sdw045 srs, PTA-5578 ; Ralstonia pickettii srs, PTA-5579 ; Alcaligenes-piechaudii srs, PTA-5580; and Pseudomonas-putida biotype b srs, PTA-5581.

3. A biologically pure strain according to claim 2 wherein said hydrocarbon is a polyaromatic hydrocarbon.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 14, 2022
From: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC
To: BATTELLE SAVANNAH RIVER ALLIANCE, LLC
Reel/Frame 062086/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 2, 2009
From: WASHINGTON SAVANNAH RIVER COMPANY LLC
To: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC
Reel/Frame 022043/0750 →
CHANGE OF NAME Recorded Jul 25, 2008
From: WESTINGHOUSE SAVANNAH RIVER COMPANY LLC
To: WASHINGTON SAVANNAH RIVER COMPANY LLC
Reel/Frame 021291/0431 →
CORRECTIVE ASSIGNMENT TO CORRECT THE LEGAL NAME OF COMPANY WHICH DID NOT INCLUDE THE DESIGNATION OF "LLC" PREVIOUSLY RECORDED ON REEL 014701 FRAME 0413. ASSIGNOR(S) HEREBY CONFIRMS THE LEGAL NAME OF ASSIGNEE IS WESTINGHOUSE SAVANNAH RIVER COMPANY LLC. Recorded Jun 28, 2007
From: BRIGMON, ROBIN; STORY, SANDRA; ALTMAN, DENIS; BERRY, CHRISTOPHER J.
To: WESTINGHOUSE SAVANNAH RIVER COMPANY LLC
Reel/Frame 019494/0815 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 13, 2003
From: BRIGMON, ROBIN; STORY, SANDRA; ALTMAN, DENIS; BERRY, CHRISTOPHER J.
To: WESTINGHOUSE SAVANNAH RIVER COMPANY
Reel/Frame 014701/0413 →