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Title: In-situ chemical barrier and method of making

Abstract

A chemical barrier is formed by injecting a suspension of solid particles or colloids into the subsurface. First, a stable colloid suspension is made including a surfactant and a non-Newtonian fluid. This stable colloid suspension is characterized by colloid concentration, colloid size, colloid material, solution ionic strength, and chemical composition. A second step involves injecting the optimized stable colloid suspension at a sufficiently high flow rate to move the colloids through the subsurface sediment, but not at such a high rate so as to induce resuspending indigenous soil particles in the aquifer. While injecting the stable colloid suspension, a withdrawal well may be used to draw the injected colloids in a direction perpendicular to the flow path of a contaminant plume. The withdrawal well, may then be used as an injection well, and a third well, in line with the first two wells, may then be used as a withdrawal well, thereby increasing the length of the colloid barrier. This process would continue until emplacement of the colloid barrier is complete.

Inventors:
 [1];  [2]
  1. (West Richland, WA)
  2. (Richland, WA)
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA
OSTI Identifier:
872086
Patent Number(s):
US 5857810
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
in-situ; chemical; barrier; method; formed; injecting; suspension; solid; particles; colloids; subsurface; stable; colloid; including; surfactant; non-newtonian; fluid; characterized; concentration; size; material; solution; ionic; strength; composition; step; involves; optimized; sufficiently; flow; rate; move; sediment; induce; resuspending; indigenous; soil; aquifer; withdrawal; draw; injected; direction; perpendicular; path; contaminant; plume; injection; third; line; increasing; length; process; emplacement; complete; direction perpendicular; chemical composition; solid particles; flow rate; flow path; solid particle; soil particles; chemical barrier; newtonian fluid; in-situ chemical; subsurface sediment; involves injecting; /405/588/

Citation Formats

Cantrell, Kirk J., and Kaplan, Daniel I. In-situ chemical barrier and method of making. United States: N. p., 1999. Web.
Cantrell, Kirk J., & Kaplan, Daniel I. In-situ chemical barrier and method of making. United States.
Cantrell, Kirk J., and Kaplan, Daniel I. Fri . "In-situ chemical barrier and method of making". United States. https://www.osti.gov/servlets/purl/872086.
@article{osti_872086,
title = {In-situ chemical barrier and method of making},
author = {Cantrell, Kirk J. and Kaplan, Daniel I.},
abstractNote = {A chemical barrier is formed by injecting a suspension of solid particles or colloids into the subsurface. First, a stable colloid suspension is made including a surfactant and a non-Newtonian fluid. This stable colloid suspension is characterized by colloid concentration, colloid size, colloid material, solution ionic strength, and chemical composition. A second step involves injecting the optimized stable colloid suspension at a sufficiently high flow rate to move the colloids through the subsurface sediment, but not at such a high rate so as to induce resuspending indigenous soil particles in the aquifer. While injecting the stable colloid suspension, a withdrawal well may be used to draw the injected colloids in a direction perpendicular to the flow path of a contaminant plume. The withdrawal well, may then be used as an injection well, and a third well, in line with the first two wells, may then be used as a withdrawal well, thereby increasing the length of the colloid barrier. This process would continue until emplacement of the colloid barrier is complete.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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