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Using Zero-Valent Metal Nanoparticles to Remediate Organic Contaminants

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Abstract: The transport of organic contaminants down the soil profile constitutes a serious threat to the quality of ground water. Zero-valent metals are considered innocuous abiotic agents capable of mediating decontamination processes in terrestrial systems. In this investigation, zero-valent Fe, Ni-Fe, and Pd-Fe were assessed for their ability to reduce the chlorinated solvent trichloroethylene (TCE) and the dinitroaniline herbicide trifluralin. TCE treated with metal nanoparticles was reduced to saturated hydrocarbons via hydrodechlorination. Trifluralin was transformed to amino derivatives that formed stable complexes with quinone moieties of fulvic acid as a result of nucleophilic addition. In view of these results, zero-valent metals emerge as an efficient tool for neutralizing a host of environmental contaminants. However, since the later frequently reside in hard to reach locations within the soil profile, it is necessary to develop tools for transporting the zero-valent metals to the target sites.

The work described in this paper was not funded by the U.S. Environmental Protection Agency, and therefore, the contents do not necessarily reflect the views of the Agency and no official endorsement should be inferred.
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Citation:Strynar, M. J., B. Schrick, B. N. Will, J. Dec, T. E. Mallouk, and J. M. Bollag. Using Zero-Valent Metal Nanoparticles to Remediate Organic Contaminants. Presented at 225th American Chemical Society National Meeting, New Orleans, LA, March 23-27, 2003.
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Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
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Division: Human Exposure & Atmospheric Sciences Division
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Branch: Methods Development & Application Branch
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Product Type: Abstrct/Oral
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Presented: 03/24/2003
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Related Entries:
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Bullet Item Xenobiotic Methods Development for Human Exposure Assessment Research
spacer Relationship Reason:   A Project of the Product
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Last Updated on Monday, October 22, 2007
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