Apparatus and method for phosphate-accelerated bioremediation

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Description

An apparatus and method for supplying a vapor-phase nutrient to contaminated soil for in situ bioremediation. The apparatus includes a housing adapted for containing a quantity of the liquid nutrient, a conduit in fluid communication with the interior of the housing, means for causing a gas to flow through the conduit, and means for contacting the gas with the liquid so that a portion thereof evaporates and mixes with the gas. The mixture of gas and nutrient vapor is delivered to the contaminated site via a system of injection and extraction wells configured to the site. The mixture has a ... continued below

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29 p.

Creation Information

Looney, B. B.; Phelps, T. J.; Hazen, T. C.; Pfiffner, S. M.; Lombard, K. H. & Borthen, J. W. January 1994.

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Description

An apparatus and method for supplying a vapor-phase nutrient to contaminated soil for in situ bioremediation. The apparatus includes a housing adapted for containing a quantity of the liquid nutrient, a conduit in fluid communication with the interior of the housing, means for causing a gas to flow through the conduit, and means for contacting the gas with the liquid so that a portion thereof evaporates and mixes with the gas. The mixture of gas and nutrient vapor is delivered to the contaminated site via a system of injection and extraction wells configured to the site. The mixture has a partial pressure of vaporized nutrient that is no greater than the vapor pressure of the liquid. If desired, the nutrient and/or the gas may be heated to increase the vapor pressure and the nutrient concentration of the mixture. Preferably, the nutrient is a volatile, substantially nontoxic and nonflammable organic phosphate that is a liquid at environmental temperatures, such as triethyl phosphate or tributyl phosphate.

Physical Description

29 p.

Notes

INIS; OSTI as DE96005187

Source

  • Other Information: PBD: 1994

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  • Other: DE96005187
  • Report No.: PATENTS-US--A8186065
  • Grant Number: AC09-89SR18035
  • Office of Scientific & Technical Information Report Number: 207047
  • Archival Resource Key: ark:/67531/metadc673324

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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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Creation Date

  • January 1994

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 9, 2016, 4:45 p.m.

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Looney, B. B.; Phelps, T. J.; Hazen, T. C.; Pfiffner, S. M.; Lombard, K. H. & Borthen, J. W. Apparatus and method for phosphate-accelerated bioremediation, text, January 1994; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc673324/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.