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Title: Site remediation via dispersion by chemical reaction (DCR)
Authors: Construction Productivity Advancement Research Program (U.S.)
Marion, Giles M. (Giles Michael)
Payne, James R.
Brar, Gurdarshan S.
Keywords: Chemical stabilization
Contaminated soils
DCR technology
Site remediation
Chemical reactions
Soil remediation
Dispersion by Chemical Reaction
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 97-18.
Description: Special Report
Abstract: The DCR (Dispersion by Chemical Reaction) technologies are a group of patented waste treatment processes using CaO (quicklime) for the immobilization of heavily oiled sludges, oil-contaminated soils, acid-tars, and heavy metals in Ca(OH)2 and CaCO3 matrices. The objectives of this project were to 1) evaluate the DCR process for remediating soils contaminated with pesticides, petroleum hydrocarbons (oils and fuels), and heavy metals in cold regions and 2) evaluate DCR-treated oil-contaminated soil as a non-frost-susceptible (NFS) construction material. Three major studies evaluated the DCR process to remediate 1) hydrocarbons at Eareckson Air Force Station on Shemya in the Aleutians, 2) pesticide-contaminated soils from Rocky Mt. Arsenal, and 3) heavy-metal contaminated soils from a former zinc smelter site at Palmerton, Pennsylvania. The DCR process was successful in stabilizing liquid organics and heavy metals in contaminated soils. The chemical properties of soils contaminated by solid organics (asphalt tar and pesticides) were not generally improved by the DCR process, but even in these cases, the physical properties were improved for potential reuse as construction materials. Following laboratory verification for a specific waste, we can recommend the DCR process for the field remediation of liquid organics and heavy-metal-contaminated materials.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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