aerobic bioremediation Articles

  • Aerobic Bioremediation of MTBE and BTEX at a USCG Facility

    Untitled Document Abstract: A full-scale in-situ bioremediation of dissolved methl-tert-butyl-ether (MTBE) and benzene, toluene, ethylbenzene and xylenes (BTEX) was ...


    By Regenesis

  • Aerobic and Anaerobic Bioremediation of 1,2-Dichloroethene and Vinyl Chloride

    ABSTRACT: This paper presents a comparative study of aerobic and anaerobic bioremediation of 1,2-dichloroethene (DCE) and vinyl chloride (VC), and includes laboratory bench scale testing of anaerobic biodegradation and a side by side field pilot test comparing the effectiveness of aerobic and anaerobic biodegradation processes. Manufacturing activities at an industrial facility in Ohio resulted ...


    By Regenesis

  • Aerobic and Anaerobic Bioremediation of 1,1-DCE and Vinyl Chloride in Groundwater

    Untitled Document A three-tiered remediation approach is being used for successful field treatment of a 1,1- dichloroethene (1,1-DCE) groundwater plume. The plume is characterized by ...


    By Regenesis

  • Enhanced Aerobic Bioremediation of Petroleum UST Releases in Puerto Rico.

    Abstract: Releases of petroleum compounds from underground storage tanks (USTs) containing diesel fuel and gasoline are a serious and increasingly prevalent problem in Puerto Rico. Remediation of groundwater impacted by these releases utilizing common methodologies can be quite costly and require long periods of time to implement. Oxygen is often the limiting factor retarding optimal ...


    By Regenesis

  • 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. ...

  • 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 ...

  • Aerobic and Anaerobic Bioremediation of cis-1,2-Dichloroethene and Vinyl Chloride

    ABSTRACT This paper presents a comparative study of aerobic and anaerobic bioremediation of cis-1,2-dichloroethene (DCE) and vinyl chloride (VC). The study includes laboratory bench scale testing of anaerobic biodegradation followed by a side by side field pilot test comparing the effectiveness of aerobic and anaerobic biodegradation processes. Prior to initiating the pilot test, DCE and VC ...


    By Weston Solutions, Inc

  • In-situ Aerobic Bioremediation of Recalcitrant Organics: A Case Study Demonstrating Benefits and Potential Limitations

    Abstract A history of spills and/or releases at two adjacent dry cleaning facilties in the Houston, Texas area resulted in significant soil and shallow ground-water contamination. The soils at the adjacent properties (collectively called 'the Site') are relatively permeable allowing for rappid vertical migration at the source area(s) and lateral migration in the shallow ground water. The ...


    By CL Solutions, LLC

  • 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 ...


    By CL Solutions, LLC

  • Bioremediation Accelerates Brownfield Cleanup

    Untitled Document Bioremediation, using CL-out microbes, clears the obstacles to Brownfield redevelopment by reducing wells contaminant concentrations in groundwater and removing the ...


    By CL Solutions, LLC

  • Peroxygen Mediated Bioremediation of MTBE.

    ABSTRACT: Evidence is mounting, from laboratory and field studies, that oxygen plays a role in the bioremediation of methyl tertiary butyl ether (MTBE). Our experience with a number of commercial applications of peroxygen, in the form of Oxygen Release Compound (ORCâ), correlates the provision of enhanced aerobic conditions with enhanced MTBE biodegradation. Subsequent laboratory and field ...


    By Regenesis

  • A Citizen`s Guide to Bioremediation

    What is bioremediation? Bioremediation is a treatment process that uses naturally occurring microorganisms (yeast, fungi, or bacteria) to break down, or degrade, hazardous substances into less toxic or nontoxic substances. Microorganisms, just like humans, eat and digest organic substances for nutrients and energy. In chemical terms, 'organic' compounds are those that contain carbon and hydrogen ...

  • CL-Out In Situ Bioremediation of Perchlorate

    CL-Out is a consortium of facultative aerobic organisms that are well know for their ability to utilize nitrates.  CL-Out is generally used for the aerobic cometabolism of PCE and other chlorinated solvents.  As the half-reaction for perchlorate is close to that of nitrate, CL-Out cometabolism of perchlorate was successfully tested in the laboratory.  In addition to laboratory ...


    By CL Solutions, LLC

  • Enhanced Bioremediation in Clay Soils (PDF)

    This case study evaluates the full-scale in-situ application of an electron donor to enhance biodegradation of chlorinated solvents in clay soils and groundwater beneath an active light industrial property in a congested urban setting.A pilot test was successful by varying degrees in three test areas as shown by the production of biodegradation daughter products and microbial end products. The ...


    By Regenesis

  • Bioremediation of chlorinated phenols with INTEROX® case study

    The mass balance enabed the evaluation of the individual contribution of the flushing and the biodegradation processes to the global remediation. Initially, flushing was the main process of remediation. After the deveopment of in situ conditions favorab e for the aerobic biodegradation, the main process of contamination remova is bioremediation contributing for 71% to the global contaminant ...


    By Solvay

  • Bioremediation of 1,2-dichloroethane with INTEROX® case study

    At a chemica plant in a harbour area, the surface aquifer was contaminated with 1,2-dichoroethane (1,2-DCEa) which had to be remediated. Site characterisation, and laboratory tests demonstrated that oxygen was the limiting factor for the insitu biodegradation of 1,2-DCEa. The remedial strategy was based on flushing with simuftaneous aerobic biodegradation enhancement. Biodegradation was stimuated ...


    By Solvay

  • Enhanced In Situ Bioremediation of Chlorinated Solvents (PDF)

    Anaerobic enhancement of a shallow confined silty sand aquifer has resulted in a substantial biodegradation of a dissolved Tetrachloroethene (PCE) plume at a former metal finishing facility in Secaucus, New Jersey. The injection of a time-release hydrogen compound (HRC™) rapidly converted ambient aquifer aerobic conditions to anaerobic, and maintained such conditions throughout the 6-month ...


    By Regenesis

  • Aerobic Cometabolism of Halogenated Aliphatic Hydrocarbons: A Technology Overview

    Untitled Document Abstract Bioremediation of chlorinated solvents has been moving from an innovative to ...


    By CL Solutions, LLC

  • Enhanced Bioremediation of TPH with IXPER® case study

    This remediation has been conducted after removing of leaking underground storage tanks from a former gasoline service station in Bethalto, Illinois, and limited source area excavation and air-site disposal of petroleum-contaminated soils. Dissolved petroleum constituents in excess of state reguatory standards were still observed in the groundwater. It was estimated that the remaining ...


    By Solvay

  • 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

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