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 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.
- Inventors:
- Issue Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 207047
- Patent Number(s):
- 8186065
- Application Number:
- ON: DE96005187; PAN: 8-186,065; TRN: 96:009210
- Assignee:
- Dept. of Energy
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B26 - HAND CUTTING TOOLS B26B - HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- DOE Contract Number:
- AC09-89SR18035
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 1994
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 05 NUCLEAR FUELS; 54 ENVIRONMENTAL SCIENCES; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; SOILS; REMEDIAL ACTION; HYDROCARBONS; BIODEGRADATION; CONTAMINATION; DESIGN; EQUIPMENT
Citation Formats
Looney, B B, Phelps, T J, Hazen, T C, Pfiffner, S M, Lombard, K H, and Borthen, J W. Apparatus and method for phosphate-accelerated bioremediation. United States: N. p., 1994.
Web.
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. United States.
Looney, B B, Phelps, T J, Hazen, T C, Pfiffner, S M, Lombard, K H, and Borthen, J W. Sat .
"Apparatus and method for phosphate-accelerated bioremediation". United States. https://www.osti.gov/servlets/purl/207047.
@article{osti_207047,
title = {Apparatus and method for phosphate-accelerated bioremediation},
author = {Looney, B B and Phelps, T J and Hazen, T C and Pfiffner, S M and Lombard, K H and Borthen, J 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 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}