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Monday, November 16, 2020 | History

5 edition of Anaerobic Degradation of Chlorinated Solvents found in the catalog.

Anaerobic Degradation of Chlorinated Solvents

The Sixth International in Situ and On-Site Bioremediation Symposium, San Diego, California, June 4-7, 2001 ... in Situ and On-Site Bioremediation Sympo)

by Calif.) International In Situ and On-Site Bioremediation Symposium (6th : 2001 : San Diego

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Published by Battelle Press .
Written in English

    Subjects:
  • Environmental - General,
  • General,
  • Science,
  • Technology & Industrial Arts,
  • Biodegradation,
  • Bioremediation,
  • Congresses,
  • Organochlorine compounds,
  • Solvents,
  • Science/Mathematics

  • Edition Notes

    ContributionsVictor S. Magar (Editor), Donna E. Fennell (Editor), Jeffrey J. Morse (Editor), Bruce C. Alleman (Editor), Andrea Leeson (Editor)
    The Physical Object
    FormatHardcover
    Number of Pages387
    ID Numbers
    Open LibraryOL12232325M
    ISBN 101574771175
    ISBN 109781574771176

    Principles and Practices of Enhanced Anaerobic Bioremediation of Chlorinated Solvents [] Leeson, Andrea Beevar, Erica Henry, Bruce Fortenberry, Josh et al. NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA [Corporate Author]Cited by: We developed a microbial community capable of biodegrading mixtures of chlorinated ethenes and 1,4-dioxane under varying redox conditions. Achieving the removal of chlorinated ethenes as well as 1,4-dioxane to below health advisory levels in groundwater that has anaerobic and aerobic zones has proven to be challenging. However, our mixed community, composed of the anaerobic chlorinated ethene Cited by: 2.


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Anaerobic Degradation of Chlorinated Solvents by Calif.) International In Situ and On-Site Bioremediation Symposium (6th : 2001 : San Diego Download PDF EPUB FB2

12 Chlorinated Solvents Robert D. Morrison, Brian L. Murphy, and Richard E. Doherty Contents INTRODUCTION CHLORINATED SOLVENT CHEMISTRY DEGRADATION REACTIONS AND PATHWAYS ANALYTICAL METHODS HISTORICAL SOURCES AND COMPOSITION OF CHLORINATED SOLVENTS FORENSIC TECHNIQUES.

Anaerobic Degradation Chlorine # increases Biotransformation increases Van Eekert PhD Dissertation (no. Wageningen University, The Netherlands, p. Cometabolism of chlorinated solvents by anaerobic sludge These include a vapor phase in unsaturated soils, dissolved phase in groundwater, and non-aqueous phase liquids (NAPL) in the subsurface.

Most chlorinated solvents are denser than water and hydrophobic. (ITRC ). During anaerobic biodegradation of chlorinated compounds, sequential removal of chloride ions is generally observed. Biodegradation of Chlorinated Compounds—A Review.

chlorinated solvents, primarily 1,1,1- Anaerobic Degradation of Some Chlorinated Aliphatics. Anaerobic Biodegradation of Chlorinated Solvents at Pinellas Science, Technology, and Research (STAR) (Largo, FL) An in situ anaerobic bioremediation demonstration was completed in July of for a portion of the groundwater plume at the former DOE's Pinellas Plant in Largo, Florida, now known as Pinellas STAR Center.

Find many great new & used options and get the best deals for Anaerobic Degradation of Chlorinated Solvents 6(5): The Sixth International in Situ and on-Site Bioremediation Symposium, San Diego, California, June 6 (5) (, Hardcover) at the best online prices at.

biological degradation of chlorinated solvents is occurring. Implementation of the remedy includes the placement of “sentinel” wells between the plume edge and exposure points, establishing a long term sampling plan, and drawing up contingency plans in the event of unforeseen.

Once they are added to groundwater, they are Several aerobic and anaerobic mechanisms have Anaerobic Degradation of Chlorinated Solvents book described to degrade chlorinated solvents in groundwater, but anaerobic biodegradation may be the.

Anaerobic degradation of chlorinated solvents. Columbus, Ohio: Battelle Press, © (OCoLC) Online version: International in Situ and On-Site Bioremediation Symposium (6th: San Diego, Calif.). Anaerobic degradation of chlorinated solvents. Columbus, Ohio: Battelle Press, © (OCoLC) Material Type: Conference.

Final Report: Mechanisms, Chemistry, and Kinetics of Anaerobic Degradation of cDCE and Vinyl Chloride EPA Grant Number: RC Subproject: this is subproject numberestablished and managed by the Center Director under grant R (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).

Chlorinated solvents may undergo a different anaerobic biodegradation process, reductive dechlorination, in which the chlorine atoms are sequentially removed from the contaminant molecule and substituted by hydrogen as shown for PCE in Fig.

and for carbon tetrachloride in Fig. Anaerobic degradation of chlorinated ethylenes is based on reductive dechlorination, in which chlorinated ethenes and hydrogen act as electron acceptors and an electron donor, respectively (Maymó-Gatell et al.

A variety of anaerobic microbes that can degrade PCE or Cited by: biodegradation of chlorinated solvents can produce toxic degradation products, such as dichloroethylene and vinyl chloride, while petroleum degradation usually produces carbon dioxide, water, and sometimes methane or other simple hydrocarbons.

A second primary difference is density: PHC liquids (e.g. Degradation pathways of chlorinated solvents are important in understanding the fate and transport of these chemicals in the subsurface and form the basis for Anaerobic Degradation of Chlorinated Solvents book use of these relationships in forensic investigations.

The degradation of chlorinated solvents in soil and groundwater occurs by chemical (abiotic) and microbial (biotic) processes and is well understood (see Figures and ). Enhanced Remediation of Chlorinated Solvents from Contaminated Groundwater Using a Bioreactor System 4 Natural Degradation Pathways • The majority of degradation ois biologically mediated • Replace chlorine atoms with hydrogen atoms • Anaerobic conditions • Requires electron donors – Carbon substrate – Hydrogen gas AFile Size: 1MB.

Chlorinated ethanes and ethenes are among the most frequently detected organic pollutants of water. Their physicochemical properties are such that they can contaminate aquifers for decades.

In favourable conditions, they can undergo degradation. In anaerobic conditions, chlorinated solvents can undergo reductive by: THE ANAEROBIC DEGRADATION OF SELECTED CHLORINATED HYDROCARBON PESTICIDES by David W.

Hill* and Perry L. McCarty Respectively, Doctoral Candidate and Associate Professor of Sanitary Engineering Department of Civil Engineering Stanford University Stanford, California *Now a Research Sanitary Engineer with the Federal Water Pollution Control. Final Report: Pathways of Anaerobic Toluene Metabolism by a Sulfate-Reducing Bacterium, Strain PRTOL1 EPA Grant Number: RC Subproject: this is subproject numberestablished and managed by the Center Director under grant R (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).

@article{osti_, title = {Intrinsic in situ anaerobic biodegradation of chlorinated solvents at an industrial landfill}, author = {Lee, M.D.

and Mazierski, P.F. and Buchanan, R.J. and Ellis, D.E. and Sehayek, L.S.}, abstractNote = {The DuPont Necco Park Landfill in Niagara Falls, New York, is contaminated with numerous chlorinated solvents at concentrations of up to hundreds of mg/L. AFCEE, Naval Facilities Engineering Service Center (NFESC), and Environmental Security Technology Certification Program (ESTCP).

Principles and Practices of Enhanced Anaerobic Bioremediation of Chlorinated Solvents. Prepared by Parsons Infrastructure & Cited by: drocarbons and chlorinated solvents, contaminants commonly found dissolved in groundwater, have been shown in recent studies to attenuate by a variety of these processes.

A significant number of studies have identified biodegradation as the key attenuation pro-cess for fuel hydrocarbons and chlorinated Size: KB. Bioaugmentation has been viewed with skepticism in the past, but there has been increasing evidence in recent years that it can accelerate the bioremediation of some contaminants under some site conditions.

Bioaugmentation has become particularly useful for treating groundwater contaminated with chlorinated by: initiatives. Anaerobic bioremediation has the potential to increase the effective solubility of chlorinated solvents, resulting in more rapid bioremediation of DNAPL source areas.

Solubility enhancement factors of up to six times have been demonstrated for tetrachloro-ethene (PCE) and trichloroethene (TCE) (Yang & McCarty, ; Sleep et al.

@article{osti_, title = {Anaerobic and aerobic treatment of chlorinated aliphatic compounds}, author = {Long, J L and Stensel, H D and Ferguson, J F and Strand, S E and Ongerth, J E}, abstractNote = {Biological degradation of 12 chlorinated aliphatic compounds (CACs) was assessed in bench-top reactors and in serum bottle tests.

Three continuously mixed daily batch-fed reactor systems. Chlorinated solvents have a low viscosity and are chemically stable under typical aerobic conditions. In health, a chlorinated solvent poses as a risk and is classified as an actual or potential cancer-causing compound.

In air and water surfaces, chlorinated solvents disintegrate sequentially into other chlorinated solvents. Chlorinated solvents and their natural transformation products are the most frequently observed groundwater contaminants in the United States.

In situ bioremediation using anaerobic or aerobic co-metabolic processes is a promising means of cleaning up contaminated by: An analysis of the advantages, performance and relative costs of a range of remedial technologies, including bioremediation technologies such as monitored natural attenuation, biostimulation and bioaugmentation for anaerobic degradation of chlorinated solvents; and physical-chemical technologies such as air sparging, chemical oxidation and.

Concentrating on the five commonly encountered chlorinated solvents (perchloroethylene, trichloroethylene, methyl chloroform, carbon tetrachloride and CFC), forensic opportunities applicable to each are presented including the use of stabilizers, manufacturing impurities, surrogate chemicals and physical measurements and degradation.

For example, anaerobic degradation in sediments would lead to the formation of less-chlorinated congeners that are more mobile and would diffuse into overlying aerobic waters in a river, where aerobic degradation could occur (Tiedje et al.

An analysis of the advantages, performance and relative costs of a range of remedial technologies, including bioremediation technologies such as monitored natural attenuation, biostimulation and bioaugmentation for anaerobic degradation of chlorinated solvents; and physical-chemical technologies such as air sparging, chemical oxidation and /5(3).

OPERATION OF AN IN SITU ANAEROBIC BIODEGRADATION SYSTEM FOR A CHLORINATED SOLVENT SOURCE AREA Aleisa Bloom, George DeLong (Oak Ridge National Laboratory, Oak Ridge, TN, USA), Robert Lyon, Albert Buell ([email protected]), Rosa Gwinn, PhD, (URS Group, Inc., Gaithersburg, MD, USA) ABSTRACT In situ accelerated anaerobic biodegradation is an.

In the late s and early s, our nation began to grapple with the legacy of past disposal practices for toxic chemicals. With the passage in of the Comprehensive Envir- mental Response, Compensation, and Liability Act (CERCLA), commonly known as Sup- fund, it became the law of the land to remediate these sites.

The U. Department of Defense (DoD), the nation’s largest industrial. Bioremediation of Chlorinated Solvents in the Vadose Zone. Adaptation of Bacteria to Chlorinated Hydrocarbon Degradation. Potential Applications of Phage Display to Bioremediation.

Improving the Biodegradative Capacity of Subsurface Bacteria. Natural Anaerobic Degradation of Chlorinated Solvents at a Canadian Manufacturing Plant.

Investigations of Chlorinated Solvents Contamination. Sort by Author. Sort by Year S.M., Godsy, E.M., Edwards, E., and Mayer, K.P.,Anaerobic degradation of aromatic hydrocarbons and aerobic degradation of trichloroethylene There are 13 Books and Book Chapters, 94 Conference Proceedings Papers, 3 Fact Sheets, Journal Articles.

Chlorinated Solvents Contamination The syringes strapped to the sided of the packer pipe rod are for measuring concentrations of dissolved hydrogen gas.

USGS scientists are testing two syringe materials in order to determine which is best suited for long-term diffusion sampling in trichloroethylene-contaminated fractured rock aquifers. Acclimation of Anaerobic Systems to Biodegrade Chlorinated Solvents by Michelle Lalonde Master of Applied Science, Department of Civil Engineering, University of Toronto ABSTRACT Microbial acclimation to tetrachloroethene (PCE), trichloroethene (TCE), andCited by: 1.

Harding Lawson Associates (HLA) conducted a field demonstration to evaluate in-situ enhanced anaerobic biodegradation of chlorinated solvents using a hydrogen-release compound (HRC).

The technology is designed to enhance the natural biodegradation process for a more rapid and complete degradation of the organic contaminants to non-toxic. 1 Introduction Anaerobic degradation of chlorinated solvents such as TCE and PCE is known to occur in saturated anaerobic aquifers.

Recently, the same degradation path- way has been demonstrated in anaerobic parts of wetlands. Vinyl chloride is a cancer-causing compound formed from solvents in groundwater systems under anaerobic conditions.

These solvents are. Sequential Anaerobic and Aerobic Treatment of Chlorinated Solvents Achieves MCLs. REGENESIS® solutions are successfully used by environmental consulting, engineering and construction firms to serve a broad range of clients.

ATTENUATION OF CHLORINATED SOLVENTS IN GROUND WATER by Todd H. Wiedemeier Parsons Engineering Science, Inc. Pasadena, California Matthew A. Swanson, David E. Moutoux, and E. Kinzie Gordon Parsons Engineering Science, Inc. Denver, Colorado John T. Wilson, Barbara H. Wilson, and Donald H.

Kampbell United States Environmental Protection AgencyFile Size: 2MB.Chlorinated Solvents Overview Chlorinated solvents such as tetrachloroethene (PCE) and trichloroethene (TCE) have been used in various industries in the United States since the s (Sale et al.

). These solvents have primarily been used for cleaning and degreasing purposes (dry.You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.