33 Articles found
EOS Remediation Articles
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Prevent Stagnation Zones during Injection to Improve Contact Efficiency
When injecting into multiple wells simultaneously, stagnation zones can develop preventing effective reagent delivery. Figure 1 shows the simulated EOS Pro distribution in a homogeneous aquifer when EOS Pro is injected into all the wells ...
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Emulsified Oil Injection: Is smaller always better?
Many professionals assume that the smallest oil droplets will transport the farthest during subsurface substrate injection. However, this is not always true. Water treatment engineers have studied particle (and droplet) removal in sand ...
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Sulfate-Enhanced bioremediation of BTEX - Case Study
Problem A former gas station in North Carolina contaminated groundwater with BTEX from a UST basin. The site is now in the median of a busy four-lane highway. Residents within 250 feet of the site use an irrigation well, prompting the need to ...
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Using CoBupH MG to adjust aquifer pH - Case Study
Problem A US Government site had elevated TCE. Low aquifer pH stalled in situ bioremediation. Project Goal Inject organic substrate in the aquifer to enable naturally-occuring bacteria to effect in situ anaerobic reductive dechlorination ...
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Enhanced Anaerobic Bioremediation of a TCE Source at the Tarheel Army Missile Plant Using EOS
EOS, or emulsified oil substrate, was used to stimulate anaerobic biodegradation of trichloroethene (TCE) and tetrachloroethene (PCE) at a former Army-owned manufacturing facility located in the Piedmont area of North Carolina. Previous use of ...
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Treatment of Perchlorate and 1,1,1-Trichloroethane in Groundwater using Edible Oil Substrate (EOS®)
ABSTRACT: Laboratory studies and a pilot-scale field test are being conducted to evaluate the use of edible oil emulsions for biodegradation of perchlorate and 1,1,1-trichloroethane (1,1,1-TCA) in groundwater at a site in Maryland. The patented ...
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Where Do Ketones and Butanol Come From during ERD?
Acetone, butanol and other ketones are often detected at low levels during anaerobic bioremediation (Jacob et al., Battelle Bioremediation Symposium Proceedings, 2005). These compounds can be produced during anaerobic fermentation by the bacterium ...
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Why can’t I control the pH of my aquifer? - pH and Acidity are not the same
Acidity is the amount of base required to neutralize acids present in a water sample. This is important because it determines the amount of buffer required to adjust aquifer pH. Since acids can disassociate to different extents, two solutions with ...
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In Situ Bioremediation of Chlorinated Solvents
ABSTRACT: In situ bioremediation is ongoing at a former manufacturing facility in Portland, Oregon. Shallow groundwater at the site was impacted by chlorinated solvents, primarily trichloroethene and degradation products cis-1,2-dichloroethene ...
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Using AquaBupH to adjust aquifer PH: ESTCP-funded project at Charleston Naval weapons station - Case Study
Elevated levels of trichloroethene (TCE) were found in groundwater at a Department of De-fense (DoD) facility in Charleston, SC. Under an ESTCP-funded in situ technology demonstra-tion project , the Navy had been effectively remediating ...
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EOS Permeable reactive barriers successfully treat a large Trichloroethene plume - Case Study
Historical use of trichloroethene (TCE) and other chlorinated solvents at a former au-tomotive parts manufacturing plant in Indiana resulted in a large groundwater plume, stretching approximately 2 miles from the site. TetraTech GEO evaluated ...
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In Situ Remediation of Perchlorate in Soil and Groundwater, M.S. Thesis, California State University San Bernardino
This research project documents a technology assessment for in-situ bioremediation of perchlorate (ClO4-). The main goals are to compare methodologies, perform site characterization of soil and groundwater, and perform microcosm and bench scale ...
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Dressing down groundwater contamination
Unlike the late Paul Newman, who bottled his special-recipe salad dressing and sold it in supermarkets, Dr. Robert Borden simply mixes up his own `dressing` and pumps it into the ground. That’s because the environmental engineering professor and his ...
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Year-long effort secures California regulatory thumbs-up
Working on behalf of client engineering firm URS Corporation, EOS Remediation brought the bioremediation product EOS® through unprecedented, custom testing to meet low-salt/low-metal regulatory standards for two California regulators. The ...
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`Biopreferred Products` championed by US Secretary of Agriculture
US Secretary of Agriculture Thomas Vilsack recently urged his peers on President Obama’s Cabinet to give procurement preference to products that comply with the federal BioPreferred program. EOS® is among a wide range of products the ...
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Method for remediation of aquifers
The US Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of contract F41624-99 C-8033 awarded by the United ...
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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 ...
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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 ...
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Bioaugmentation to Treat Chlorinated Solvents in Fractured Bedrock
ABSTRACT: An in situ bioremediation pilot study was performed at a former industrial site in New Jersey where groundwater has been impacted by historical releases of chlorinated solvents. The target area for treatment is a fractured, intermediate ...
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Anaerobic Bioremediation of Groundwater Using Edible Oil Substrate EOS® In an Unconfined Groundwater Aquifer
ABSTRACT: To treat groundwater contaminants in situ, enhanced anaerobic bioremediation processes can be stimulated through addition of soluble substrates. At a dry cleaners site located in San Jose, California, the goal was to find a substrate that ...
