Field-scale model for air sparging performance assessment and design

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Air sparging has been used as an in situ technique to remove VOCs from contaminated groundwater: air is injected into the groundwater from an injection well, and the VOC partitions into the air phase and rises to the unsaturated zone, where another technique, such as soil vapor extraction, is used to remove the gases from the vadose zone. A computer model that accurately describes the process is needed. This project comprises model development and laboratory experiments, conducted independently. The model will be tested using the laboratory data. Only preliminary results are available. Preliminary laboratory column tests have been conducted along ... continued below

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27 p.

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Hein, G; Hutzler; Gierke, J. & Falta, R. December 31, 1996.

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Description

Air sparging has been used as an in situ technique to remove VOCs from contaminated groundwater: air is injected into the groundwater from an injection well, and the VOC partitions into the air phase and rises to the unsaturated zone, where another technique, such as soil vapor extraction, is used to remove the gases from the vadose zone. A computer model that accurately describes the process is needed. This project comprises model development and laboratory experiments, conducted independently. The model will be tested using the laboratory data. Only preliminary results are available. Preliminary laboratory column tests have been conducted along with some modeling to simulate the removal of a single VOC from a soil column. Comparison show that a finite element code is able to predict removal of methane and TCE. To determine if the air flow pattern in air sparging is predictable, experiments were done in a large-scale reactor and compared to numerical simulations.

Physical Description

27 p.

Notes

INIS; OSTI as DE97052265

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  • Conference on industry partnerships to deploy environmental technology, Morgantown, WV (United States), 22-24 Oct 1996

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  • Other: DE97052265
  • Report No.: DOE/MC/33082--97/C0825
  • Report No.: CONF-9610231--23
  • Grant Number: AR21-96MC33082
  • Office of Scientific & Technical Information Report Number: 491836
  • Archival Resource Key: ark:/67531/metadc681564

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • June 14, 2016, 5:40 p.m.

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Hein, G; Hutzler; Gierke, J. & Falta, R. Field-scale model for air sparging performance assessment and design, article, December 31, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc681564/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.