Deployment of an innovative thermally enhanced soil mixing process augmented with zero-valent iron.

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An innovative in-situ soil treatment process, referred to as soil mixing/thermally enhanced soil vapor extraction (SM/TESVE), was used to remediate the 317 Area of Argonne National Laboratory-East (i.e., Argonne), which is contaminated with volatile organic compounds (VOCs). Following the initial soil treatment, polishing was required to reduce residual concentrations of contaminants. A study of polishing methods was conducted. It determined that injecting metallic iron particles into the soil, in conjunction with soil mixing, would reduce residual VOC concentrations more effectively than the original conventional soil ventilation approach. After the effectiveness of iron injection was verified, it replaced the soil ventilation ... continued below

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Lynch, P. L. January 15, 1999.

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An innovative in-situ soil treatment process, referred to as soil mixing/thermally enhanced soil vapor extraction (SM/TESVE), was used to remediate the 317 Area of Argonne National Laboratory-East (i.e., Argonne), which is contaminated with volatile organic compounds (VOCs). Following the initial soil treatment, polishing was required to reduce residual concentrations of contaminants. A study of polishing methods was conducted. It determined that injecting metallic iron particles into the soil, in conjunction with soil mixing, would reduce residual VOC concentrations more effectively than the original conventional soil ventilation approach. After the effectiveness of iron injection was verified, it replaced the soil ventilation step. The modified process involved mixing the soil while hot air and steam were injected into it. Off-gases were captured in a hood over the treatment area. During this process, an iron slurry, consisting of up to 50% iron particles in water with guar gum added as a thickening agent, was injected and mixed into the soil by the mixing equipment. Approximately 6,246 m{sup 3} (8, 170 yd{sup 3}) of soil was treated during this project. Confirmatory samples were then collected. In these samples, VOC concentrations were usually reduced by more than 80%.

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Medium: P; Size: vp.

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OSTI as DE00012389

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  • 10th National Technology Information Exchange (TIE) Workshop, Willowbrook, IL (US), 10/27/1998--10/29/1998

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  • Report No.: ANL/ESH/CP-98215
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 12389
  • Archival Resource Key: ark:/67531/metadc622833

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Office of Scientific & Technical Information Technical Reports

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  • January 15, 1999

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  • June 16, 2015, 7:43 a.m.

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  • March 24, 2016, 6:49 p.m.

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Lynch, P. L. Deployment of an innovative thermally enhanced soil mixing process augmented with zero-valent iron., article, January 15, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc622833/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.