Enhancement of in situ microbial remediation of aquifers

Patent · Fri Jan 01 04:00:00 EST 1993

OSTI ID:869035

Fredrickson, James K ^[1]; Brockman, Fred J ^[1]; Streile, Gary P ^[2]; Cary, John W ^[2]; McBride, John F ^[3]

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1. Kennewick, WA
2. both or Richland, WA
3. Carrboro, NC

Methods are provided for remediating subsurface areas contaminated by toxic organic compounds. An innocuous oil, such as vegetable oil, mineral oil, or other immiscible organic liquid, is introduced into the contaminated area and permitted to move therethrough. The oil concentrates or strips the organic contaminants, such that the concentration of the contaminants is reduced and such contaminants are available to be either pumped out of the subsurface area or metabolized by microorganisms. Microorganisms may be introduced into the contaminated area to effect bioremediation of the contamination. The methods may be adapted to deliver microorganisms, enzymes, nutrients and electron donors to subsurface zones contaminated by nitrate in order to stimulate or enhance denitrification.

• Research Organization: BATTELLE MEMORIAL INSTITUTE
• DOE Contract Number: AC06-76RL01830
• Assignee: Battelle Memorial Institute (Richland, WA)
• Patent Number(s): US 5265674
• OSTI ID: 869035
• Country of Publication: United States
• Language: English

Related Subjects

/166/
adapted
aquifers
available
bioremediation
compounds
concentrates
concentration
contaminants
contaminated
contamination
deliver
deliver microorganisms
denitrification
donors
effect
electron
electron donor
enhance
enhancement
enzymes
immiscible
immiscible organic
innocuous
introduced
liquid
metabolized
methods
microbial
microbial remediation
microorganisms
mineral
mineral oil
move
nitrate
nutrients
oil
organic
organic compound
organic compounds
organic contaminant
organic contaminants
organic liquid
permitted
provided
pumped
reduced
remediating
remediation
situ
situ microbial
stimulate
strips
subsurface
subsurface zones
surface zone
therethrough
toxic
toxic organic
vegetable
zones