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Title: 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.:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
207047
Patent Number(s):
-US-A8186065
Application Number:
ON: DE96005187; PAN: 8-186,065; TRN: 96:009210
Assignee:
Dept. of Energy SRS; SCA: 054000; 540220; 420200; PA: EDB-96:063713; NTS-96:012159; SN: 96001529439
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}
}