Electrokinetic demonstration at Sandia National Laboratories: Use of transference numbers for site characterization and process evaluation

Lindgren, E R; Mattson, E D

Title: Electrokinetic demonstration at Sandia National Laboratories: Use of transference numbers for site characterization and process evaluation

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Abstract

Electrokinetic remediation is generally an in situ method using direct current electric potentials to move ionic contaminants and/or water to collection electrodes. The method has been extensively studied for application in saturated clayey soils. Over the past few years, an electrokinetic extraction method specific for sandy, unsaturated soils has been developed and patented by Sandia National Laboratories. A RCRA RD&D permitted demonstration of this technology for the in situ removal of chromate contamination from unsaturated soils in a former chromic acid disposal pit was operated during the summer and fall of 1996. This large scale field test represents the first use of electrokinetics for the removal of heavy metal contamination from unsaturated soils in the United States and is part of the US EPA Superfund Innovative Technology Evaluation (SITE) Program. Guidelines for characterizing a site for electrokinetic remediation are lacking, especially for applications in unsaturated soil. The transference number of an ion is the fraction of the current carried by that ion in an electric field and represents the best measure of contaminant removal efficiency in most electrokinetic remediation processes. In this paper we compare the transference number of chromate initially present in the contaminated unsaturated soil, with the transferencemore »« less

Authors:

Lindgren, E R ^[1]; Mattson, E D ^[2]

Sandia National Labs, Environmental Restoration Technologies, Albuquerque, NM (United States)
SAT-UNSAT, Inc., Albuquerque, NM (United States)

Publication Date:: Sat Mar 01 00:00:00 EST 1997

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)

OSTI Identifier:: 459804

Report Number(s):: SAND-97-0281C; CONF-970335-14
ON: DE97003005; TRN: 97:006727

DOE Contract Number:: AC04-94AL85000

Resource Type:: Conference

Resource Relation:: Conference: Waste Management `97, Tucson, AZ (United States), 2-7 Mar 1997; Other Information: PBD: [1997]

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; 05 NUCLEAR FUELS; SOILS; REMEDIAL ACTION; METALS; REMOVAL; ELECTRIC POTENTIAL; ELECTRODYNAMICS; CONTAMINATION; CLAYS; EXTRACTION; PLUMES; CHROMATES

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                    Lindgren, E R, and Mattson, E D. Electrokinetic demonstration at Sandia National Laboratories: Use of transference numbers for site characterization and process evaluation.  United States: N. p., 1997. 
        Web.

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                    Lindgren, E R, & Mattson, E D. Electrokinetic demonstration at Sandia National Laboratories: Use of transference numbers for site characterization and process evaluation.  United States.

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                    Lindgren, E R, and Mattson, E D. 1997.  
        "Electrokinetic demonstration at Sandia National Laboratories: Use of transference numbers for site characterization and process evaluation".  United States.  https://www.osti.gov/servlets/purl/459804.

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@article{osti_459804,

  title        = {Electrokinetic demonstration at Sandia National Laboratories: Use of transference numbers for site characterization and process evaluation},

  author       = {Lindgren, E R and Mattson, E D},

  abstractNote = {Electrokinetic remediation is generally an in situ method using direct current electric potentials to move ionic contaminants and/or water to collection electrodes. The method has been extensively studied for application in saturated clayey soils. Over the past few years, an electrokinetic extraction method specific for sandy, unsaturated soils has been developed and patented by Sandia National Laboratories. A RCRA RD&D permitted demonstration of this technology for the in situ removal of chromate contamination from unsaturated soils in a former chromic acid disposal pit was operated during the summer and fall of 1996. This large scale field test represents the first use of electrokinetics for the removal of heavy metal contamination from unsaturated soils in the United States and is part of the US EPA Superfund Innovative Technology Evaluation (SITE) Program. Guidelines for characterizing a site for electrokinetic remediation are lacking, especially for applications in unsaturated soil. The transference number of an ion is the fraction of the current carried by that ion in an electric field and represents the best measure of contaminant removal efficiency in most electrokinetic remediation processes. In this paper we compare the transference number of chromate initially present in the contaminated unsaturated soil, with the transference number in the electrokinetic process effluent to demonstrate the utility of evaluating this parameter.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/459804},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Mar 01 00:00:00 EST 1997},

  month        = {Sat Mar 01 00:00:00 EST 1997}

}

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