Manipulating subsurface colloids to enhance cleanups of DOE waste sites. 1998 annual progress report

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'This project seeks to increase the effectiveness of pump and treat systems for removal of pollutants from sandy aquifers. Pollutants which sorb strongly to aquifer solids are not efficiently remediated using pump and treat technologies. However, if the sorbents most active in immobilizing pollutants (e.g., clays, humics, and iron oxides) were dispersed into colloidal size particles (colloid mobilization), these colloids and their associated pollutants might be pumped from aquifers. At a chromium contaminated sandy aquifer, this project seeks to: (1) understand the forces which stabilize colloidal particles in the aquifer, (2) devise solutions which will disrupt these colloid stabilizing forces, ... continued below

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3 pages

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Gschwend, P.M. June 1, 1998.

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Description

'This project seeks to increase the effectiveness of pump and treat systems for removal of pollutants from sandy aquifers. Pollutants which sorb strongly to aquifer solids are not efficiently remediated using pump and treat technologies. However, if the sorbents most active in immobilizing pollutants (e.g., clays, humics, and iron oxides) were dispersed into colloidal size particles (colloid mobilization), these colloids and their associated pollutants might be pumped from aquifers. At a chromium contaminated sandy aquifer, this project seeks to: (1) understand the forces which stabilize colloidal particles in the aquifer, (2) devise solutions which will disrupt these colloid stabilizing forces, and (3) demonstrate the effectiveness of colloid mobilization as a remediation technique for removing sorbed chromium from the aquifer. This progress report summarizes work completed after 1 1/2 years of a three-year project. The efforts have focused on remediation of a chromium contaminated aquifer located on the property of National Chromium in northeastern Connecticut. Work to date may be divided into three areas: (1) site characterization; (2) identification of colloid binding forces and development of an effective colloid dispersion treatment; and (3) field testing of the aquifer remediation strategy.'

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3 pages

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  • Other: DE00013533
  • Report No.: EMSP-54888--98
  • Grant Number: NONE
  • DOI: 10.2172/13533 | External Link
  • Office of Scientific & Technical Information Report Number: 13533
  • Archival Resource Key: ark:/67531/metadc621007

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 1998

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 20, 2017, 1:47 p.m.

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Gschwend, P.M. Manipulating subsurface colloids to enhance cleanups of DOE waste sites. 1998 annual progress report, report, June 1, 1998; Cambridge, Massachusetts. (digital.library.unt.edu/ark:/67531/metadc621007/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.