chlorinated solvent contaminant Articles
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Case study - Dual-reagent ISCO “Fast-Tracks” cleanup of Orlando Brownfield
Description: A Brownfield property impacted with chlorinated solvents was the planned location for the home of the Orlando Magic basketball team. Contaminants: Chlorinated solvent contamination was present in soil and groundwater with PCE concentrations greater than 14,000 ug/L and potential presence of DNAPL. Remedial challenge: The City of Orlando was looking to obtain a pay-per-performance ...
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Using Cl-Out to Finish Remediation Following Chemical Oxidation
CL-Out was used to complete the remediation of ground water contaminated by chlorinated solvents from a former dry cleaning site in Rockville, Maryland. The ground water contamination had migrated from leaking sewer lines to underlying bedrock fractures. Fenton’s Reagent was first applied to the site, but the PCE concentrations increased due to desorption. Subsequently, sodium ...
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Blacks dry cleaner Tetrachloroethene remediation project Case Study
Background PCE source area in soil and groundwater at an active dry cleaner. Performed demonstration of Bioavailability Enhancement Technology (B.E. T.rM patent pending). B.E. T. is a source area bioremediation technology that enhances the dissolution of the chlorinated solvent contaminant and provides an electron donor for anaerobic reductive dechlorination (ARD). WIL CLEAR Sodium Lactate ...
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E-Z Trays selected for Large scale project - Case Study
A former industrial plant and top Superfund site in Sydney, Australia, had been in operation since the 1930s and contained chlorinated solvent contamination. Because of the size and scope of this project packed towers traditionally would have been the air stripping method of choice, but the client was concerned about the ability of workers having easy access to maintain and clean the units. They ...
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Project - Remediation of complex Chlorinated Solvent contamination - Itron gas meter factory, Manchester - Case Study
Client: Miller Homes Site Area: 3.03HA Location: Old Trafford, Greater Manchester Timeframe: 12 Months Challenge Design and delivery of a remediation strategy to treat extensive TCE-contaminated soil and groundwater, ready for development of 260 new homes. The derelict 3.03ha site had once been home to Manchester’s Itron gas meter factory, which opened its doors in 1933 before closing in ...
By Geostream UK
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Co‐occurrence of 1,4‐dioxane with trichloroethylene in chlorinated solvent groundwater plumes at US Air Force installations: Fact or fiction
Increasing regulatory attention to 1,4‐dioxane has prompted the United States Air Force (USAF) to evaluate potential environmental liabilities, primarily associated with legacy contamination, at an enterprise scale. Although accurately quantifying environmental liability is operationally difficult given limited historic environmental monitoring data, 1,4‐dioxane is a known constituent (i.e., ...
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Reclamation of unconventional water using nano zero–valent iron particles: an application for groundwater
Nano zero–valent iron (nZVI) is one of the most prominent examples of a rapidly emerging technology for the treatment of contaminated soil and groundwater. These particles were used successfully to absorb various heavy metals (e.g., Pb2+, Ba2+, As5+, As3+, Cr6+, Co2+, Cd2+, Cu2+), chlorinated organic contaminants (e.g., solvents, pesticides), nitrate and so on. nZVI particles have a large ...
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Moving beyond pump and treat toward enhanced attenuation and combined remedies: T-Area, Savannah River Site
Paper No: WSRC-STI-2008-00186, 8 pp, Apr 2008 [prepared for presentation at Battelle's Remediation of Chlorinated and Recalcitrant Compounds Conference, 2008)ABSTRACT: Ground water beneath T-Area, a former laboratory and semiworks operation at DOE's Savannah River facility, is contaminated by chlorinated solvents (cVOCs). Since the contamination was detected in the 1980s, the cVOCs at T-Area have ...
By Redox Tech
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Protocol for Enhanced In Situ Bioremediation Using Emulsified Edible Oil
An in-depth discussion of the EOS® patented technology and its usefulness for site remediation is presented. Details of how the technology works, design considerations as well as strengths and limitations of the technology are presented. 1.1 INTRODUCTION Management of groundwater contaminated with chlorinated solvents, perchlorate, and explosives is one of the Department of Defense’s ...
By Redox Tech
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The advantages and benefits of aerobic cometabolism
Aerobic metabolism yields the energy-transferring molecule TPA at a much higher rate than anaerobic metabolism. The higher energy yield produces a greater viable population. The oxygenase enzymes involved in the cometabolism of chlorinated solvents are not induced by the presence of contaminants, so a high microbial population has a proportionately high yield of oxygenase enzymes. Aerobic ...
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Bacterium Shows Promise in Groundwater Remediation
Dioxane contamination of groundwater is both common and hard to deal with, particularly when the molecule occurs concurrently with the compound 1,1-DCE. Microbe could prove an economical, environmentally sound method of addressing stubborn dioxane co-contamination A pair of industrial solvents associated with cosmetics and household cleaning products has been detected at thousands of aquifer ...
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CL#9 - In Situ BioLogix Application - Case Study
Site Information Soil and ground water contamination by chlorinated solvents was discovered at a former industrial chemical mixing facility that was to be redeveloped as a shopping center. The contamination had leached from the soil underlying a drum storage area into ground water and spread across the property. While the area of contamination was relatively small (5,000 square feet) and ...
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Case study – TCE contamination pilot study
Site: Pilot Study – Trap & Treat® BOS 100® Colorado Contaminant: Chlorinated Solvent (TCE) in soil and groundwater Soil Type: Silty, sandy clays Injection Cost: ~$10,000 (material & labor) Treatment Area: ~1500 sq. ft. Plume Thickness: ~10 feet (32 to 42 feet bgs) Date of Treatment: 11/3/04 Notes: The pilot study for this large project in Colorado was conducted in the ...
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Bioremediation: An Eco-Friendly Solution For Environmental Cleanup
Introduction Bioremediation is the use of microorganisms, or their enzymes to clean up environmental pollutants. It is a sustainable and cost-effective approach to clean up contaminated soil, water, and air. Bioremediation can be applied to a variety of pollutants, including petroleum, pesticides, and solvents. Bioremediation is a complex process that involves various biochemical reactions, ...
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Technical Bulletin: c-DCE stall out
Trichloroethene (TCE) and Perchloroethene (PCE) chlorinated solvents have been responsible for the serious contamination of soils and groundwater. The occurrence of cis-DCE “stall”, the condition of where it appears biodegradation beyond cis-DCE to vinyl chloride does not occur resulting in cis-DCE accumulation, is often misinterpreted. How do you know if your site has c-DCE “Stall”?1) Evaluate ...
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Groundwater contaminated with chlorinated solvents - Air force center for environmental excellence
LOCATION: Dover, DelawarePROJECT DATE: October 1999 to presentCLIENT: Air Force Center for Environmental Excellence (AFCEE) BACKGROUND: Groundwater contaminated with chlorinated solvents is a common problem to many US Air Force Bases. TSI in conjunction with Solutions Industrial & Environmental Services (Solutions-IES) of Raleigh, NC approached AFCEE with an innovative method utilizing ...
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In Situ Chemical Oxidation Remediation Pilot Study Of A Karst Bedrock Aquifer Contaminated With Chlorinated Solvents
ABSTRACT A pilot study to evaluate an innovative in situ treatment technology was implemented at Letterkenny Army Depot, Chambersburg, Pennsylvania, for a limestone bedrock aquifer contaminated with chlorinated solvents. This technology destroys VOCs in groundwater, utilizing a network of injection points to deliver a solution of hydrogen peroxide (50%), catalysts, and surfactants. The ...
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Enhanced Anaerobic Bioremediation of a TCE Source Area at the Tarheel Army Missile Plant using EOS®
Emulsified oil substrate (EOS®) is being used to remediate a trichloroethene (TCE) source area at the Tarheel Army Missile Plant (TAMP) in Burlington, North Carolina. 1. INTRODUCTIONEmulsified oil substrate (EOS®) is being used to remediate a trichloroethene (TCE) source area at the Tarheel Army Missile Plant (TAMP) in Burlington, North Carolina. TAMP is a government-owned, formerly ...
By Redox Tech
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AutoTracker Reduces Remediation Cost per Gallon by 59% - Case Study
AutoTracker™ (U.S. Patent Number 6,520,259) Floating Extraction Inlets were added to a DPE system at a remediation site in mid-Michigan following several years of operational problems caused by fluctuating water table levels. Installation was straightforward and system performance improved immediately, reducing on-site maintenance, labor and O&M costs and greatly improving groundwater ...
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Effective treatment of MtBE and breakdown products using C-Sparge and Perozone®
Ozone oxidation systems like C-SpargeTM (microbubble ozone) and Perozone® (peroxide-coated ozone) are used for treatment of a variety of contaminants. From non-volatile to volatile compounds, from saturated to unsaturated compounds. The most common contaminants treated are chlorinated solvents, petroleum products and PAHs. Engineered microbubble systems with ozone (C-SpargeTM) or a combination of ...
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