Thesis (M.A.Sc.) -- University of Toronto, 2000.
|Series||Canadian theses = -- Thèses canadiennes|
|The Physical Object|
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Technical Report for Surfactant-Enhanced DNAPL Removal at S Marine Corps Base Camp Lejeune, North Carolina The CROW hot-water injection technology was demonstrated at the Brodhead Creek Superfund site in Stroudsburg, PA, over a month period. and investigations revealed that a seasonal high water table contacted sorbed residual Full-Scale Removal of DNAPL Constituents Using Steam-Enhanced Extraction and Electrical Resistance Heating G. Heron, S. Carroll, and S. Nielsen. Ground Water Monitoring & Remediation, Vol 25 No 4, p , Discusses the full-scale remediation of Area A of the Northeast Site at the Young-Rainey STAR Center, Largo, :// Once DNAPL is identified below the water table, slow dissolution and pumping of the contaminated water is the baseline cleanup strategy. New cleanup approaches based on enhanced removal by surfactants and/or alcohols have been proposed and tested at the pilot ://metadc/m2/1/high_res_d/pdf. Remediation of DNAPL-contaminated sites with surfactants involves injection of a solution of water plus surfactant into the source zone and removal of the DNAPL through a combination of dissolution and displacement (see Figure ). The relative importance of dissolution compared to displacement can be controlled by formulation of the
The issues important for this technique to succeed in the field are (i) biodegradability and cost effectiveness of the surfactants, (ii) surfactant loss due to adsorption, (iii) vertical migration of residual DNAPL due to low interfacial tension, (iv) ease of separation of organics from water above ground before re-injection of :// Enhanced Treatment of DNAPLs Contaminated Soils and Groundwater Using Biosurfactants: In-Situ Bioremediation EPA Grant Number: RC Subproject: this is subproject number , established and managed by the Center Director under grant R (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center). ITRC - DNAPL Source Reduction Facing the Challenge April In Situ Chemical Flushing. In situ chemical flushing describes an approach to enhanced DNAPL removal involving the injection and subsequent extraction of chemicals to solubilize and/or mobilize DNAPLs. The chemicals are injected into a system of wells designed to "sweep" the DNAPL zone The steam enhanced removal of VOCs and SVOCs prior to stabilization reduces both long term risk and overall cement dosing requirements, while at the same time documenting the mass of removal of contaminants. Overviews of the technology applied at two sites (LNAPL and DNAPL) will be ://
DNAPL removal from a heterogeneous alluvial aquifer by surfactant-enhanced aquifer remediation. Ground Water Monit Remediation 21(4) Crossref, Google Scholar; Lunn SRD, Kueper BH. Manipulation of density and viscosity for the optimization of DNAPL recovery by alcohol flooding. J Contam Hydrol Crossref, Google Scholar Progress 10/01/98 to 09/30/04 Outputs Many soils and aquifers in the country are contaminated with dense non-aqueous phase liquids (DNAPLs) such as chlorinated hydrocarbons, many of which are classified as carcinogens. These liquids have a density greater than and are immiscible with water, i.e., they co-exist as two separate liquids. Upon entrance into the soil and/or aquifers, these Characterization and removal of DNAPL from sand and clay layered media after flushing the original PCE out of the column with alcohol followed by water. The residual saturation for the clay-mix media ranged from 12% to 17%. F.J. Holzmer, G.A. Pope, L. YehSurfactant-enhanced aquifer remediation of PCE-DNAPL in low permeability sands. G.B Big Data and Machine Learning in Water Sciences: Recent Progress and Their Use in Advancing Science; Early Results: Juno at Jupiter; Atmosphere-ice-ocean-ecosystem processes in a thinner Arctic sea ice regime: the Norwegian young sea ICE cruise (N-ICE) A Census of Atmospheric Variability from Seconds to Decades