Apparatus and method for phosphate-accelerated bioremediation
Abstract
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 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 and provides for the use of a passive delivery system. 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.
- Inventors:
-
- Aiken, SC
- Knoxville, TN
- Augusta, GA
- Seattle, WA
- Issue Date:
- Research Org.:
- WESTINGHOUSE SAVANNAH RIVER CO
- OSTI Identifier:
- 871554
- Patent Number(s):
- 5753109
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B09 - DISPOSAL OF SOLID WASTE B09C - RECLAMATION OF CONTAMINATED SOIL
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; method; phosphate-accelerated; bioremediation; supplying; vapor-phase; nutrient; contaminated; soil; situ; housing; adapted; containing; quantity; liquid; conduit; communication; interior; means; causing; gas; flow; contacting; portion; evaporates; mixes; mixture; vapor; delivered; site; via; injection; extraction; configured; provides; passive; delivery; partial; pressure; vaporized; desired; heated; increase; concentration; preferably; volatile; substantially; nontoxic; nonflammable; organic; phosphate; environmental; temperatures; triethyl; tributyl; housing adapted; contaminated soil; tributyl phosphate; vapor pressure; partial pressure; organic phosphate; situ bioremediation; contaminated site; vapor-phase nutrient; environmental temperature; phosphate-accelerated bioremediation; liquid nutrient; /210/166/405/
Citation Formats
Looney, Brian B, Pfiffner, Susan M, Phelps, Tommy J, Lombard, Kenneth H, Hazen, Terry C, and Borthen, James W. Apparatus and method for phosphate-accelerated bioremediation. United States: N. p., 1998.
Web.
Looney, Brian B, Pfiffner, Susan M, Phelps, Tommy J, Lombard, Kenneth H, Hazen, Terry C, & Borthen, James W. Apparatus and method for phosphate-accelerated bioremediation. United States.
Looney, Brian B, Pfiffner, Susan M, Phelps, Tommy J, Lombard, Kenneth H, Hazen, Terry C, and Borthen, James W. Thu .
"Apparatus and method for phosphate-accelerated bioremediation". United States. https://www.osti.gov/servlets/purl/871554.
@article{osti_871554,
title = {Apparatus and method for phosphate-accelerated bioremediation},
author = {Looney, Brian B and Pfiffner, Susan M and Phelps, Tommy J and Lombard, Kenneth H and Hazen, Terry C and Borthen, James W},
abstractNote = {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 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 and provides for the use of a passive delivery system. 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}