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Title: Chemical tailoring of steam to remediate underground mixed waste contaminents

Abstract

A method to simultaneously remediate mixed-waste underground contamination, such as organic liquids, metals, and radionuclides involves chemical tailoring of steam for underground injection. Gases or chemicals are injected into a high pressure steam flow being injected via one or more injection wells to contaminated soil located beyond a depth where excavation is possible. The injection of the steam with gases or chemicals mobilizes contaminants, such as metals and organics, as the steam pushes the waste through the ground toward an extraction well having subatmospheric pressure (vacuum). The steam and mobilized contaminants are drawn in a substantially horizontal direction to the extraction well and withdrawn to a treatment point above ground. The heat and boiling action of the front of the steam flow enhance the mobilizing effects of the chemical or gas additives. The method may also be utilized for immobilization of metals by using an additive in the steam which causes precipitation of the metals into clusters large enough to limit their future migration, while removing any organic contaminants.

Inventors:
 [1];  [2];  [1];  [3]
  1. (Livermore, CA)
  2. (Berkeley, CA)
  3. (Tracy, CA)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872673
Patent Number(s):
US 5986159
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
chemical; tailoring; steam; remediate; underground; mixed; waste; contaminents; method; simultaneously; mixed-waste; contamination; organic; liquids; metals; radionuclides; involves; injection; gases; chemicals; injected; pressure; flow; via; contaminated; soil; located; depth; excavation; mobilizes; contaminants; organics; pushes; ground; extraction; subatmospheric; vacuum; mobilized; drawn; substantially; horizontal; direction; withdrawn; treatment; heat; boiling; action; front; enhance; mobilizing; effects; gas; additives; utilized; immobilization; additive; causes; precipitation; clusters; limit; future; migration; removing; substantially horizontal; organic liquids; pressure steam; contaminated soil; mixed waste; organic contaminant; atmospheric pressure; organic liquid; organic contaminants; subatmospheric pressure; steam flow; underground contamination; horizontal direction; chemical tailoring; /588/134/405/

Citation Formats

Aines, Roger D., Udell, Kent S., Bruton, Carol J., and Carrigan, Charles R. Chemical tailoring of steam to remediate underground mixed waste contaminents. United States: N. p., 1999. Web.
Aines, Roger D., Udell, Kent S., Bruton, Carol J., & Carrigan, Charles R. Chemical tailoring of steam to remediate underground mixed waste contaminents. United States.
Aines, Roger D., Udell, Kent S., Bruton, Carol J., and Carrigan, Charles R. Fri . "Chemical tailoring of steam to remediate underground mixed waste contaminents". United States. doi:. https://www.osti.gov/servlets/purl/872673.
@article{osti_872673,
title = {Chemical tailoring of steam to remediate underground mixed waste contaminents},
author = {Aines, Roger D. and Udell, Kent S. and Bruton, Carol J. and Carrigan, Charles R.},
abstractNote = {A method to simultaneously remediate mixed-waste underground contamination, such as organic liquids, metals, and radionuclides involves chemical tailoring of steam for underground injection. Gases or chemicals are injected into a high pressure steam flow being injected via one or more injection wells to contaminated soil located beyond a depth where excavation is possible. The injection of the steam with gases or chemicals mobilizes contaminants, such as metals and organics, as the steam pushes the waste through the ground toward an extraction well having subatmospheric pressure (vacuum). The steam and mobilized contaminants are drawn in a substantially horizontal direction to the extraction well and withdrawn to a treatment point above ground. The heat and boiling action of the front of the steam flow enhance the mobilizing effects of the chemical or gas additives. The method may also be utilized for immobilization of metals by using an additive in the steam which causes precipitation of the metals into clusters large enough to limit their future migration, while removing any organic contaminants.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}

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