Enhanced Bioremediation Articles

  • Surfactant enhanced bioremediation (SEB) of F2, F3 and F4 contaminated soils in Northern Alberta - Case Study

    Ivey International Inc. (Ivey) was retained to apply the SEB (Surfactant just prior to the on-set of colder northern weather in an area know for -20oC to Enhanced Bioremediation) technology to remediate 2000 tons of F2, F3, and -40oC winter temperatures. The actual period for effective bioremediation in F4 fine grained contaminated soil at a remote site in northern Alberta. The this climate is ...


    By Ivey International Inc.

  • 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 conduct proactive remedial action. Site conditions of sand and clay above partially weathered bedrock and depleted sulfate concentrations within the ...


    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 ...

  • 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.

  • Tacoma, WA - ESTCP Fort Lewis heat enhanced bio - Case Study

    Heat Enhanced Bioremediation and Destruction Introduction In situ thermal treatment through Electrical Resistance Heating (ERH) is a proven robust technology for the treatment of volatile organic compound (VOC) source zones. ERH effectively treats the subsurface by volatilizing dense non-aqueous phase liquid (DNAPL) and VOCs, recovering the vapor, and ...


    By TRS Group, Inc.

  • 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

  • Enhanced bioremediation of crude oil in polluted beach sand by the combination of bioaugmentation and biodiesel

    Biodiesel produced from rapeseed oil was used as a cost-effective and sustainable agent to enhance crude oil biodegradation in sand microcosms. The initial concentration of crude oil and total petroleum hydrocarbon (TPH) was 20,000 and 18,750 mg/kg, respectively. The mass ratio of biodiesel to crude oil was 0 (designated T1), 1:10 (designated T2), 1:4 (designated T3), and 1:2 (designated T4). ...


    By IWA Publishing

  • Former Dry Cleaning Site Contaminated with PCE - Case Study

    In-Situ® Inc. TROLL® 9500 Multiparameter Sonde helps resolve treatment challenges and saves $200,000 in drilling, reagents, and consulting. A former dry-cleaning site in the Pacific Northwest, Ultra Custom Care Cleaners, was found to be contaminated with PCE (perchloroethylene). According to the U.S. Geological Survey (USGS), PCE was widely used in the dry cleaning of fabrics since the ...


    By In-Situ, Inc.

  • Waterloo Emitters used for Bioremediation Study in High Temperature Saline Groundwater

    A study was undertaken to determine the success for aerobic bioremediation of aromatic hydrocarbons (BTEX) and MTBE (methyl tert-butyl ether) in high temperature, saline groundwater conditions. The study included laboratory microcosm experiments, as well as a field trial in Saudi Arabia, in which Solinst Waterloo ...


    By Solinst Canada Ltd.

  • Performance of DNAPL source depletion technologies 2 at 59 Chlorinated solvent-impacted sites

    Abstract Performance and rebound of intensive source depletion technologies were evaluated at 59 chlorinated solvent sites where remediation targeted dense non-aqueous phase liquid (DNAPL) source zones. The four technologies included in the study are chemical oxidation, enhanced bioremediation, thermal treatment, and surfactant/cosolvent flushing. Performance was evaluated by examining ...


    By TRS Group, Inc.

  • Analysis of DNAPL source depletion costs at 36 Field Sites

    Abstract A recent U.S. Environmental Protection Agency expert panel on dense non-aqueous phase liquid (DNAPL) remediation concluded that uncertainty in the costs and benefits of applying source depletion technologies (i.e., active remediation in source zones) is one key factor that discourages widespread use of these technologies at DNAPL sites (Kavanaugh et al., 2003). To reduce this ...


    By TRS Group, Inc.

  • 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® ...

  • SEB Surfactant Enhanced Bioremediation Process Improves F3 & F4 Bioremediation to CCME Guidelines - Case Study

    SEB Surfactant Enhanced Bioremediation process successfully cleans >4,000 Tons of F3 and F4 hydrocarbon contaminated soils at a remote site in Alberta. The SEB process was employed when the subject soils would not respond well to a conventional ex-situ bioremediation treatment. So after a 20 month period of unsuccessful bioremediation; the client and environmental contractor contacted Ivey ...


    By Ivey International Inc.

  • 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 sev-eral remedial alternatives and selected enhanced in situ bioremediation to reduce contaminant concentrations and eliminate continued plume migration at ...


    By EOS Remediation, LLC

  • Heat-enhanced bioremediation and destruction - Case Study

    Introduction In situ thermal treatment through Electrical Resistance Heating (ERH) is a proven robust technology for the treatment of volatile organic compound (VOC) source zones. ERH effectively treats the subsurface by volatilizing dense non-aqueous phase liquid (DNAPL) and VOCs, recovering the vapor, and treating the vapor by conventional technologies such as granular activated carbon ...


    By TRS Group, Inc.

  • Bioremediation of hydrocarbon impacted soils - Marchbanks, Dundee

    Client: Dundee City Council Objective: Bioremediation of hydrocarbon contaminated soils to achieve compliance with the Waste Acceptance Criteria (WAC) for Mineral Oil (C10 – C40); with the intention of re-using the soils to Riverside Recycling Centre to be used as a capping layer. Challenge: Approximately 2,800 m3 of hydrocarbon ...


    By Soilutions Ltd

  • 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.

  • 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 ...


    By JRW Bioremediation, L.L.C.

  • 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)

  • pH control for enhanced reductive bioremediation of chlorinated solvent source zones

    Enhanced reductive dehalogenation is an attractive treatment technology for in situ remediation of chlorinated solvent DNAPL source areas. Reductive dehalogenation is an acid-forming process with hydrochloric acid and also organic acids from fermentation of the electron donors typically building up in the source zone during remediation. This can lead to groundwater acidification thereby ...


    By True Blue Technologies, Inc.

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