enhanced anaerobic bioremediation Articles

  • 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 (DoD’s) ...


    By EOS Remediation, LLC

  • Freon 11/Freon 113 Remediation Using HRC – Los Osos, CA

    Site Summary A contaminant plume emanating from two waste disposal pits containing Freon 11 and Freon 113 was discovered at a former drug lab near Los Osos, California. In August 2002, Freon 11 and Freon 113 were detected in well MW-6 at maximum concentrations of 6,900 mg/L and 6,000 ?mg/L respectively. The initial remedial approach (during May 2002) was to excavate 100 cubic yards of ...


    By Regenesis

  • Comingled Plume? No Problem!

    CGRS Environmental Services and RPI Group Approved Installer, Vista Geoscience, were a bit surprised at what happened recently at a Denver hydrocarbon site they were remediating with Trap & Treat® BOS 200® injections. In late 2011, PCE contamination was also discovered (most likely coming from an upgradient dry cleaner). The client stated “The data shows that the BOS 200® ...

  • Cost implications of hydrogen donor selection for in-situ bioremediation of chlorinated solvents

    The use of enhanced anaerobic bioremediation for treatment of chlorinated solvents in groundwater has increased at a rapid rate within the past three years. Since there are a number of different hydrogen donors that can potentially be used, it is important that practitioners understand the cost implications of the hydrogen donor(s) selected for the project. A comparative economic analysis is ...


    By Terra Systems, Inc. (TSI)

  • Effective distribution of emulsified edible oil for enhanced anaerobic bioremediation

    Abstract Recent laboratory and field studies have shown that injection of emulsified edible oils can provide an effective, low-cost alternative for stimulating anaerobic biodegradation processes. A pilot-scale permeable reactive bio-barrier (PRBB) was installed at a perchlorate and chlorinated solvent impacted site by injecting 380 L of commercially available emulsion (EOS® ) ...


    By EOS Remediation, LLC

  • 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 EOS Remediation, LLC

  • Case study - Groundwater remediation of a contaminated site using enhanced anaerobic bioremediation

    Chlorinated solvents are a common threat to drinking water sources throughout the United States. While handling and disposal practices today are more closely regulated and monitored, this has not always been the case. With dry cleaners using tetrachloroethene (PCE) and industrial manufacturing facilities commonly using a variety of solvents from trichloroethene (TCE) to methylene chloride, past ...

  • 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 chlorinated solvents at the facility resulted in soil and groundwater impacts. Ten years of active remediation utilizing soil vacuum extraction and air ...


    By EOS Remediation, LLC

  • Tacoma, Washington - Well 12A superfund site - Case Study

    Combined Remedies for DNAPL Remediation Project Summary TRS Group, Inc. (TRS) teamed with KEMRON and AMEC, under KEMRON's U.S. Army Corps of Engineers (USAGE) Environmental Remediation Services Multiple Award Task Order Contract (MATOC), to perform electrical resistance heating (ERH) for the remediation of volatile organic compounds (VOCs) in the vadose zone ...


    By TRS Group, Inc.

  • Anaerobic bioremediation of groundwater using edible oil substrate EOS in an unconfined groundwater aquifer

    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 is long lasting and easily distributed into the saturated soils. After evaluating several alternatives, in situ bioremediation using an emulsified edible oil ...


    By True Blue Technologies, Inc.

  • A Pilot Study Using HRCTM to Enhance Bioremediation of CAHs.

    ABSTRACT: The effect of Hydrogen Release Compound (HRCTM) in enhancing the anaerobic bioremediation of chlorinated aliphatic hydrocarbons (CAHs) was observed in a single well pilot study. HRC is a proprietary, environmentally safe, food quality, polylactate ester formulated for the slow release of lactic acid upon hydration. Microbes metabolize the lactic acid releases by HRC and produce ...


    By Regenesis

  • 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 is long lasting and easily distributed into the saturated soils. After evaluating several alternatives, in situ bioremediation using an emulsified ...


    By EOS Remediation, LLC

  • 3-D Microemulsion (3DMe)™ Superior Distribution: Cost-Effective Treatment of Large Plumes

    3-D Microemulsion (3DMe)™, a form of HRC Advanced®, is the current state-of-the-art in slow-release electron donor products for the in-situ treatment of chlorinated solvents in groundwater. By employing a sequential, staged release of hydrogen, 3DMe provides an immediate and long-term release of hydrogen for enhanced longevity. Equally as important is the compound’s unique self-distribution ...


    By Regenesis

  • EPA Technology News & Trends - Tacoma “Well 12A” Superfund Site

    The U.S. EPA Region 10 office uses an adaptive site management approach that relies on high-resolution site characterization (HRSC) techniques for strategic sampling at the Well 12A project area. This approximate one-square-mile project area is one of three at the 2.5-square-mile Commencement Bay-South Tacoma Channel Superfund site in Tacoma, Washington. The vicinity of Well 12A, one of 13 wells ...


    By TRS Group, Inc.

  • Evaluation of Aerobic and Anaerobic Degradation of Pentachlorophenol in Groundwater (PDF)

    Bench-scale laboratory tests were conducted to evaluate and compare the enhanced bioremediation of pentachlorophenol (PCP) in groundwater under anaerobic and aerobic conditions. While tests under both conditions showed a significant reduction of PCP over the 3-month test period (greater than 90 percent reduction compared to 40 percent in controls), removal to concentrations below the 10 μg/L ...


    By Regenesis

  • Test area North Chloroethene source area remediation project Case Study

    Background A contaminant source area resulted from the injection of chlorinated solvent-containing liquid waste and sanitary sewage to the Snake River Plain Aquifer from the mid-195s to 1972. The source is primarily an organic sludge containing up to 3% TCE. The sludge is present in the fractured basalt surrounding the former injection wells. A plume of TCE in ...


    By JRW Bioremediation, L.L.C.

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