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Developing Functional Fe(0)-based Nanoparticles for In Situ Degradation of DNAPL Chlorinated Organic Solvents


Project Information

Award Amount:$358,000.00
Dollars Leveraged:$0.00
Start-End Dates:5/1/03-4/30/07
URL: http://cfpub.epa.gov/ncer_abstracts/index.cfm/fuseaction/dis...
Description:Groundwater contamination by chlorinated organic solvents poses a significant health hazard. Dense Non-Aqueous Phase Liquid (DNAPL) present at these sites acts as a long-term source, making cleanup difficult and costly. Nanotechnology has the potential to reduce the health risk and financial burden of these sites, as recently demonstrated by the use of Pd-Fe(0) nanoparticles to degrade dissolved phase TCE in situ. This project will develop and test "smart" nanoparticle assemblies that are transportable in water-saturated porous media and capable of targeting and degrading DNAPL in the subsurface. Delivering reactive nanoparticles directly to the DNAPL-water interface can significantly improve the efficiency of in situ groundwater remediation.

Products/Reports

  • 2003 Progress Report: Developing Functional Fe(0)-based Nanoparticles for In Situ Degradation of DNAPL Chlorinated Organic Solvents
    The premise of this research project is that the surfaces of zero-valent iron (Fe0) reactive nanoparticles can be modified to be transportable in water through a porous matrix, to partition preferentially at a dense nonaqueous phase liquid (DNAPL)-water interface, and to degrade DNAPL to nontoxic products. The specific objectives of the research project are to: (1) demonstrate the ability to provide targeted delivery of reactive nanoparticles to the DNAPL-water interface in saturated porous media; (2) increase the DNAPL degradation efficiency relative to unmodified particles; and (3) retain reactive particles at the DNAPL-water interface long enough to be utilized fully.
  • 2004 Progress Report: Developing Functional Fe(0)-based Nanoparticles for In Situ Degradation of DNAPL Chlorinated Organic Solvents
    The project premise is that the surfaces of reactive Fe0 nanoparticles can be modified by amphiphilic block copolymers to be transportable in water through a porous matrix, to preferentially partition at a dense nonaqueous phase liquid (DNAPL)-water interface, and to degrade DNAPL to non-toxic products. Specific project objectives are to: (1) demonstrate the ability to provide targeted delivery of reactive nanoparticles to the DNAPL-water interface in saturated porous media; (2) increase the DNAPL degradation efficiency relative to unmodified particles; and (3) retain reactive particles at the DNAPL-water interface long enough to be fully utilized.
  • 2005 Progress Report: Developing Functional Fe(0)-based Nanoparticles for In Situ Degradation of DNAPL Chlorinated Organic Solvents
    The project premise is that the surfaces of reactive Fe0 nanoparticles can be modified by amphiphilic block copolymers to be transportable in water through a porous matrix, to preferentially partition at a dense nonaqueous phase liquid (DNAPL)-water interface and to degrade DNAPL to nontoxic products. The specific objectives of this research project are to: (1) demonstrate the ability to provide targeted delivery of reactive nanoparticles to the DNAPL-water interface in saturated porous media; (2) determine the optimal properties of zero-valent iron nanoparticles and increase the DNAPL degradation efficiency relative to unmodified particles; and (3) retain reactive particles at the DNAPL-water interface long enough to be fully utilized.

Funding Organizations

Below is a list of organizations with individual contacts that are funding this project.

U.S. EPA Headquarters - Primary Contact

U.S. EPA Headquarters 8722R
1200 Pennsylvania Avenue, N. W.
Washington, District of Columbia 20460
p: 202-343-9858
Individual Contacts


Organizations Receiving Funding

Below is a list of organizations with individual contacts that are receiving funding for this project.

Carnegie Mellon University - Partner

5000 Forbes Ave
Pittsburgh, Pennsylvania 15213
Individual Contacts

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