In situ thermally enhanced biodegradation of petroleum fuel hydrocarbons and halogenated organic solvents

Patent · Wed Dec 31 23:00:00 EST 1997

OSTI ID:871555

Taylor, Robert T ^[1]; Jackson, Kenneth J ^[2]; Duba, Alfred G ^[1]; Chen, Ching-I ^[3]

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1. Livermore, CA
2. San Leandro, CA
3. Danville, CA

An in situ thermally enhanced microbial remediation strategy and a method for the biodegradation of toxic petroleum fuel hydrocarbon and halogenated organic solvent contaminants. The method utilizes nonpathogenic, thermophilic bacteria for the thermal biodegradation of toxic and carcinogenic contaminants, such as benzene, toluene, ethylbenzene and xylenes, from fuel leaks and the chlorinated ethenes, such as trichloroethylene, chlorinated ethanes, such as 1,1,1-trichloroethane, and chlorinated methanes, such as chloroform, from past solvent cleaning practices. The method relies on and takes advantage of the pre-existing heated conditions and the array of delivery/recovery wells that are created and in place following primary subsurface contaminant volatilization efforts via thermal approaches, such as dynamic underground steam-electrical heating.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5753122
• OSTI ID: 871555
• Country of Publication: United States
• Language: English

Related Subjects

/210/166/405/435/
1-trichloroethane
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array
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benzene
biodegradation
carcinogenic
chlorinated
chloroform
cleaning
conditions
contaminant
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created
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dynamic
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organic solvents
past
petroleum
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practices
pre-existing
primary
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relies
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situ
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solvent
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subsurface
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takes
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toluene
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