bioremediation bioaugmentation Articles

  • Bioaugmentation for accelerated in-situ anaerobic bioremediation

    A successful anaerobic bioaugmentation was carried out on a trichloroethene (TCE)-contaminated aquifer at Dover Air Force Base, DE, using a microbial enrichment culture capable of dechlorinating TCE to ethene. A hydraulically controlled pilot system 12   18 m was constructed 15 m below ground surface in an alluvial aquifer to introduce nutrients and substrate into the groundwater. ...


    By Terra Systems, Inc. (TSI)

  • Enhanced Bioremediation

    Introduction Enhanced bioremediation is a process in which indigenous or inoculated micro-organisms (e.g., fungi, bacteria, and other microbes) degrade (metabolize) organic contaminants found in soil and/or ground water, converting them to innocuous end products. Nutrients, oxygen, or other amendments may be used to enhance bioremediation and contaminant desorption from subsurface materials. ...

  • 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

  • Bioremediation of soil

    In our experience, Bioremediation is best accomplished with Bio-augmentation, the addition of large numbers of selected micro-organisms grown in the production laboratory. In addition to bio-augmentation, several physical and chemical parameters must be controlled in order to obtain optimal growth and maximum degradation of soil contaminants. The major factors that are controlled during ...

  • Bioaugmentation is a cost-effective and sustainable remediation alternative

    Selecting a remediation alternative that is compatible with the natural soil and ground water conditions is not only a more sustainable approach, but leads to significant savings. Comparison between bioaugmentation and other remediation methods in the five recognized sustainability criteria demonstrates the advantages of bioaugmentation. While this paper is nota complete quantitative analysis, it ...


    By CL Solutions, LLC

  • Petrox® bioremediation of trimethylbenzene isomers

    Remediation of trimethylbenzene isomers (TMB) is particularly challenging, but effective options including bioremediation are available. TMB is has characteristics similar to the BTEX compounds and some similar to middle range fractions such as naphthalene. These characteristics are summarized in the following table. The solubility of TMB is much lower than BTEX compounds, but much higher than ...


    By CL Solutions, LLC

  • 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 bedrock zone. The remedial objective at the Site is to treat the groundwater while minimizing the impact of the remedial system on the re-development of ...


    By EOS Remediation, LLC

  • The use of biostimulation and bioaugmentation to remove phenanthrene from soil

    Biostimulation and bioaugmentation are commonly employed as technologies to remediate numerous environmental problems. In the last few decades, both technologies have been used to treat polyaromatic hydrocarbons (PAHs). This paper presents a brief survey of some bioremediation aspects, with particular reference to phenanthrene removal from soil, since this compound is the main model substrate for ...


    By Inderscience Publishers

  • Types of bioremediation and their modes of action

    An Urgent Call for Change in U.S. Oil Spill Response With Bioremediation Agent Type EA* bearing out as a workable first response alternative to the use of chemical dispersants, contrasting evidence has become even clearer that dispersant use has been a huge failure. Dispersants have proven to be an inadequate response method with more and more studies showing an ...

  • DOD evaluates bioaugmentation for remediating low-pH aquifers

    The US Department of Defense (DOD) has completed pilot-scale work on the 'MAG-1' site at Fort Dix, NJ, to test suitability of anaerobic bioremediation for an aquifer with low pH. Project results will be used to design full-scale ground-water treatment at MAG-1. In addition, technical criteria gained from the demonstration will be integrated into DOD’s remediation strategy for its many facilities ...

  • Using bioaugmentation to reduce risks and costs associated with vapor intrusion

    The risk driver for remedial action on many sites is potential vapor intrusion hazard. While mitigation of the vapors entering the structure can reduce the risk to an acceptable level, there are associated long-term monitoring, operation and maintenance costs. Bioremediation of the source of vapors can reduce the risk and eliminate long-term costs. The vapor intrusion risk is managed by ...


    By CL Solutions, LLC

  • KB-1® Bioaugmentation Leading to Site Closure

    Problem DefinitionIn 2004, the site was an active manufacturing facility with plume trichloroethene (TCE) concentrations ranging from 1 to 20 milligrams per liter (mg/L), and hexavalent chromium (Cr[VI]) ranging from 0.5 to 7 mg/L. Intermediate degradation products of TCE were present in only trace concentrations in this primarily aerobic aquifer. The site source area was excavated in March ...


    By SIREM

  • Accelerated Petrox® Bioremediation of Naphthalene and Methylnaphthalene Isomers

    Petrox bioaugmentation was implemented at a former gas station UST removal site in Miami, Florida to destroy residual petroleum compounds in ground water.  The UST and contaminated soil were removed.  The residual ground water contamiantion, however, persisted and Petrox bioremediation was implemented to remove the residual low concentrations of MTBE, BTEX, naphthalene and ...


    By CL Solutions, LLC

  • Feasibility study of in-situ bioremediation for nitrobenzene-contaminated groundwater

    Although many studies have simulated in-situ bioremediation of contaminated groundwater, most of them have not considered hydrochemical conditions and indigenous microorganisms, thus potentially rendering results inapplicable to actual in-situ groundwater bioremediation projects. This study focused on a nitrobenzene-contaminated groundwater site located in Jilin City, China. The actual ...


    By IWA Publishing

  • Bioremediation applied to high pH contaminated soil washing slurry

    BioFuture Ltd. in conjunction with General Smontaggi SpA have used applied environmental engineering and bioaugmentation to remediate hydrocarbon contaminated soil washing slurry. The soil washing slurry had been treated using lime to dry and stabilise it for transport to special landfill for disposal. The starting pH was 12.55 and it was successfully bioremediated so that it could be used as a ...


    By Biofuture Ltd

  • Treatment of Dense Non-Aqueous Phase Liquids Through Enhanced Bioremediation

    ProblemAs a result of trichloroethene (TCE) releases to groundwater during the 1960’s, TCE is now found in the sandy aquifer beneath the Site in the form of a dense, non-aqueous phase liquid (DNAPL). Testing for the vinyl chloride reductase (vcrA) gene (Gene-Trac-VC) and bench scale treatability testing indicated that native Dehalococcoides (Dhc) found at the Site were not uniformly capable of ...


    By SIREM

  • Bioremediation Following Dual Phase Extraction Saves Hundreds of Thousands of Dollars

    CL-Out® bioremediation was implemented at a dry cleaners site in Houston, Texas to reduce concentrations of residual PCE and other chlorinated solvents in groundwater following dual phase vacuum extraction.  After application of CL-Out® bioremediation the chlorinated solvent concentrations were reduced by 98% to 99% in less than 90 days.  The switch saved their client ...


    By CL Solutions, LLC

  • Bioremediation of petroleum hydrocarbons through landfarming: Are simplicity and cost-effectiveness the only advantages?

    The biological removal of petroleum products using landfarming has been applied commercially in large scale with relative success. The technology has been widely used due to its simplicity and cost-effectiveness. However, together with these advantages, there are physical, chemical and biological aspects of the technology that can hamper the remediation process. The dominant pollutant removal ...


    By Springer

  • Compost Leachate Pond Bioremediation Case Study - Composting Facility, Northern California

    Our client runs a composting facility that receives green waste, food waste and other compostable material from residential and commercial sources, to create rich, black compost Challenge As part of the facility, the compost leachate pond has repeatedly experienced problems with the incoming influent high chemical oxygen demand (COD) and ...

  • A Feasibility Study for Assessment of In-situ Bioremediation Potential of a Crude Oil Degrading Pseudomonas Consortium

    Following is a link and abstract for an article published in the Journal for Scientific Research wherein a Pseudomonas consortium isolated from a site contaminated with crude oil was applied and effectively used to remediate the same contaminated site under particular environmental conditions.    Link to pdf:  ...


    By CL Solutions, LLC

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