Enhancement of in situ microbial remediation of aquifers

Patent · Fri Jan 01 00:00:00 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]

---

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, Columbus, OH (United States)
• 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

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