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Optimization Of Tce Degradation In Counter Diffusional Membrane Attached Methanotrophic Biofilms For Remediation Of Contaminated Groundwater
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Book Synopsis Optimization of TCE Degradation in Counter-diffusional, Membrane-attached, Methanotrophic Biofilms for Remediation of Contaminated Groundwater by : Firdaus Ali
Download or read book Optimization of TCE Degradation in Counter-diffusional, Membrane-attached, Methanotrophic Biofilms for Remediation of Contaminated Groundwater written by Firdaus Ali and published by . This book was released on 2002 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sustained Trichloroethylene Degradation in Counter-diffusional Membrane-attached Methanotrophic Biofilms by : Lee W. Clapp
Download or read book Sustained Trichloroethylene Degradation in Counter-diffusional Membrane-attached Methanotrophic Biofilms written by Lee W. Clapp and published by . This book was released on 1999 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mathematical Modeling of Substrate and Cometabolite Diffusion and Reaction for the Degradation of TCE in a Membrane-attached Methanotrophic Biofilm by : Amit Sabnis
Download or read book Mathematical Modeling of Substrate and Cometabolite Diffusion and Reaction for the Degradation of TCE in a Membrane-attached Methanotrophic Biofilm written by Amit Sabnis and published by . This book was released on 2005 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioaugmentation for Groundwater Remediation by : Hans F. Stroo
Download or read book Bioaugmentation for Groundwater Remediation written by Hans F. Stroo and published by Springer Science & Business Media. This book was released on 2012-10-04 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a review of the past 10 to 15 years of intensive research, development and demonstrations that have been on the forefront of developing bioaugmentation into a viable remedial technology. This volume provides both a primer on the basic microbial processes involved in bioaugmentation, as well as a thorough summary of the methodology for implementing the technology. This reference volume will serve as a valuable resource for environmental remediation professionals who seek to understand, evaluate, and implement bioaugmentation.
Book Synopsis Bioremediation of Chlorinated Solvents by : Robert E. Hinchee
Download or read book Bioremediation of Chlorinated Solvents written by Robert E. Hinchee and published by . This book was released on 1995 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil and groundwater contamination stemming from the release of various chlorinated compounds into the environment is a significant and difficult site remediation challenge. The articles in this collection discuss the use of aerobic and anaerobic biological degradation to dehalogenate sites contaminated with pesticides and chlorinated solvents such as trichloroethylene, tetrachloroethene, tetrachloromethene, perchloroethylene, carbon tetrachloride, pentachlorophenol, and chlorinated benzene. Bench- and field-scale studies of the biological processes associated with in situ dechlorination of soil and aquifers are described. Discussed are the uses of microcosm studies and numerical simulation of dechlorination to manage system operation. Site characteristics (e.g., hydraulic properties, temperature, nitrogen availability) and their effect on the stability of the methanotrophic community are examined. Methods discussed include the use of air venting, alternative electron donors, biofilm reactors, surfactants, municipal digester sludge, iron enhancement, and sulfate reduction to improve conditions for the microbial consortia that effect dechlorination.
Book Synopsis Engineered Approaches to in Situ Bioremediation of Chlorinated Solvents by :
Download or read book Engineered Approaches to in Situ Bioremediation of Chlorinated Solvents written by and published by DIANE Publishing. This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biostimulation Remediation Technologies for Groundwater Contaminants by : Rathoure, Ashok K.
Download or read book Biostimulation Remediation Technologies for Groundwater Contaminants written by Rathoure, Ashok K. and published by IGI Global. This book was released on 2018-05-19 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid progression of technology has significantly impacted population growth, urbanization, and industrialization in modern society. These developments, while positive on the surface, have created critical environmental problems in recent years. Biostimulation Remediation Technologies for Groundwater Contaminants is a critical scholarly publication that examines the release of heavy metals into the environment as a result of human activities and the use of nanoparticles and other technologies to manage and treat the effects of the pollution. Featuring coverage on a broad range of topics such as toxicity of heavy metals, bioremediation, and acclimated bacterial strains, this book is geared toward environmentalists, engineers, academics, researchers, and graduate-level students seeking current research on bioremediation as an alternate way to manage or degrade heavy metal waste.
Book Synopsis In-Situ Bioremediation of Ground Water and Geological Material by : Robert D. Norris
Download or read book In-Situ Bioremediation of Ground Water and Geological Material written by Robert D. Norris and published by DIANE Publishing. This book was released on 1995-08 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a detailed background of the technologies available for the bioremediation of contaminated soil & ground water. Prepared for scientists, consultants, regulatory personnel, & others who are associated in some way with the restoration of soil & ground water at hazardous waste sites. Also provides insights to emerging technologies which are at the research level of formation, ranging from theoretical concepts, through bench scale inquiries, to limited field-scale investigations. 95 tables & figures.
Book Synopsis Bioelectrochemistry Stimulated Environmental Remediation by : Ai-Jie Wang
Download or read book Bioelectrochemistry Stimulated Environmental Remediation written by Ai-Jie Wang and published by Springer. This book was released on 2018-08-22 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest advances in the bioelectrochemical degradation of recalcitrant environmental contaminants. The first part introduces readers to the basic principles and methodologies of bioelectrochemical systems, electron-respiring microorganisms, the electron transfer mechanism and functional electrode materials. In turn, the second part addresses the bioelectrochemical remediation/treatment of various environmental pollutants (including highly toxic refractory organics, heavy metals, and nitrates) in wastewater, sediment and wetlands. Reactor configuration optimization, hybrid technology amplification and enhanced removal principles and techniques are also discussed. The book offers a valuable resource for all researchers and professionals working in environmental science and engineering, bioelectrochemistry, environmental microbiology and biotechnology.
Book Synopsis Comparative Evaluation of Biostimulation Approaches for Enhancing In-situ TCE Degradation in Contaminated Aquifers by : Bridget Nolan Moran
Download or read book Comparative Evaluation of Biostimulation Approaches for Enhancing In-situ TCE Degradation in Contaminated Aquifers written by Bridget Nolan Moran and published by . This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of In-situ Methanotrophic Bioremediation for Contaminated Groundwater, St. Joseph, Michigan by : Perry L. McCarty
Download or read book Evaluation of In-situ Methanotrophic Bioremediation for Contaminated Groundwater, St. Joseph, Michigan written by Perry L. McCarty and published by . This book was released on 1990 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a nine-month study to evaluate the feasibility of using indigenous bacteria that use methane as a source of cell carbon and energy (methanotrophs) for degrading chlorinated solvents and their degradation products in groundwater at a site in St. Joseph, Michigan. At this site, trichloroethylene (TCE), 1,2-cis-dichloroethylene (c-DCE), 1,2-trans-dichloroethylene (t-DCE), and vinyl chloride (VC) are present in the groundwater at concentrations in the range of 1000 micrograms/liter. This site appears to be a suitable candidate for evaluating the potential for full-scale treatment using a process that has been evaluated in the laboratory and field over a four-year period at Stanford University.--Introduction, page 1.
Book Synopsis Evaluation of In-situ Methanotrophic Bioremediation for Contaminated Groundwater, St. Joseph, Michigan by : Perry L. McCarty
Download or read book Evaluation of In-situ Methanotrophic Bioremediation for Contaminated Groundwater, St. Joseph, Michigan written by Perry L. McCarty and published by . This book was released on 1990 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a nine-month study to evaluate the feasibility of using indigenous bacteria that use methane as a source of cell carbon and energy (methanotrophs) for degrading chlorinated solvents and their degradation products in groundwater at a site in St. Joseph, Michigan. At this site, trichloroethylene (TCE), 1,2-cis-dichloroethylene (c-DCE), 1,2-trans-dichloroethylene (t-DCE), and vinyl chloride (VC) are present in the groundwater at concentrations in the range of 1000 micrograms/liter. This site appears to be a suitable candidate for evaluating the potential for full-scale treatment using a process that has been evaluated in the laboratory and field over a four-year period at Stanford University.
Book Synopsis Membrane Biofilm Reactor Process for Nitrate and Perchlorate Removal by : S. Adham
Download or read book Membrane Biofilm Reactor Process for Nitrate and Perchlorate Removal written by S. Adham and published by IWA Publishing. This book was released on 2005-04-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this project were to evaluate the performance of an innovative hydrogen-fed membrane biofilm reactor (MBfR) for nitrate and perchlorate removal, and identify the system operational and design parameters that affect the biological reduction process. The MBfR contained hollow-fiber membranes within a cylindrical module. Hydrogen was fed to the fibers filling the inside and passively diffusing through the membrane avoiding the formation of a hydrogen atmosphere and serving as an electron donor for the biofilm growing on the outside of the hollow fibers. The biofilm within the reactor was developed from the indigenous bacteria present in the groundwater and was not artificially inoculated or amended. Following the MBfR, an aeration process was employed to oxygenate the water in preparation for its introduction into a distribution system as a drinking water source. A subsequent media filter captured any sloughed biomass and provided a support for aerobic organisms to remove any residual dissolved hydrogen. Process Demonstration The MBfR process was demonstrated at pilot-scale to reduce perchlorate contaminated groundwater (55 ?g/L) to below the current 4 ?g/L California Department of Health Services (CaDHS) perchlorate action limit. The simultaneous removal of influent dissolved oxygen and nitrate to below detection limits was also observed. Their removal has been observed with the MBfR system operated at system flow rates corresponding to theoretical hydraulic residence times between 15 and 60 minutes. In addition, measured hydrogen consumption closely matches theoretical calculations based on stoichiometry and anaerobic biomass development. Microbial Ecology Bench-scale investigations into the microbial ecology of the mixed cultures in MBfRs revealed that perchlorate reducing bacteria (PCRB) were found to be present in a denitrifying system that had not been previously exposed to perchlorate. However, a dominant PCRB species increased from 14 to 21 percent of total bacteria when 100-?g/L perchlorate was added to the influent. Increasing perchlorate reduction led to further increases in the dominant PCBR and the perchlorate-removal capacity of MBfRs. Another important finding is that oxygen alone can serve as a primary acceptor for perchlorate reduction, and that the oxygen reduction appeared to be more favorable for perchlorate reduction than was nitrate reduction. Ultimately, full-scale application MBfR technology could effectively and economically be used to replace costly treatment technologies currently used by municipalities to treat perchlorate-contaminated drinking water sources. This research defined the critical parameters and operating conditions required for full-scale application and provided an extensive review of the critical water quality issues considered for drinking water by CaDHS and other state primacy agencies. In addition, this project has direct relevance to the application of biological treatment for the removal of nitrate (or other biologically reducible compounds) from contaminated groundwater. For a long time, biological denitrification has long been used in wastewater treatment, but not in drinking water treatment. Due to concerns about operating a biological process in a water treatment plant, nitrate removal in the United States has been largely limited to ion-exchange or membranes, both of which are expensive processes and can generate difficult to handle residuals. The results obtained in this study looked at simultaneous biological perchlorate removal and denitrification. Originally published by AwwaRF for its subscribers in 2004. This publication can be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below
Book Synopsis MTBE Remediation Handbook by : Ellen Moyer
Download or read book MTBE Remediation Handbook written by Ellen Moyer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here is a comprehensive and up-to date compendium of the technology and management of MTBE contamination, exploring the myths which impede successful clean-up techniques, and offering effective solutions. Section I looks at the history, properties, occurrence and assessment of MTBE. Section II discusses applicable remediation technologies. Section III offers remediation case studies.
Book Synopsis Diffusion Mechanisms, Measurements, and Models with Applications in Bioremediation of Trichloroethylene and Breakdown Products by : Jonathan R. Counts
Download or read book Diffusion Mechanisms, Measurements, and Models with Applications in Bioremediation of Trichloroethylene and Breakdown Products written by Jonathan R. Counts and published by . This book was released on 2020 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trichloroethylene (TCE) is a persistent groundwater pollutant remaining from decades of use as a dry cleaning solvent and general degreaser. Having low solubility and a higher density than water, it often exists as a Dense Non-Aqueous Phase Liquid (DNAPL) at the bottom confining layer of aquifers, posing a unique remediation challenge. Bioremediation using anaerobic bacteria has proven successful, but high concentrations of TCE and proton buildup from degradation can incapacitate microbes, leaving the system "stuck". In addition, incomplete degradation of TCE results in by-products cis-1,2-dichloroethene (cDCE) and highly toxic vinyl chloride (VC). Encapsulation of microbes in a hydrogel bead to facilitate diffusion of pollutant and adsorption of acid may allow total remediation of problem systems. In this work, a series of membranes of various compositions are tested and diffusion coefficients determined for all species of interest using the diaphragm cell method. In Chapter 3, this information is used in a model to optimize hydrogel bead size and composition for bioremediation applications. Laboratory measurements of diffusion coefficients are time-consuming and may not be feasible for a diverse range of membrane types. It would be highly advantageous to build a correlation relating membrane properties to diffusivity. This would eliminate the need for repeated measurements using hazardous chemicals. Such a model would also allow rapid estimates of diffusion coefficients, expanding the likelihood of adoption of diffusion/reaction systems. Chapter 2 relates solute size, charge, and interactions within hydrogel membranes to steady state effective diffusivity for several molecules including hydrochloric acid. Increased understanding of the mechanisms of proton diffusion may have applications beyond bioremediation, including fuel cells and biomedical implants. Chapter 4 details future work which may improve efficacy of encapsulated cell systems.
Book Synopsis Engineered Approaches for in Situ Bioremediation of Chlorinated Solvent Contamination by : Andrea Leeson
Download or read book Engineered Approaches for in Situ Bioremediation of Chlorinated Solvent Contamination written by Andrea Leeson and published by . This book was released on 1999 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sites contaminated with chlorinated compounds pose health risks and are challenging and often expensive to treat in the field. This volume brings together the most up-to-date laboratory findings and the latest full-scale results from bioremediation efforts at actual field sites. Engineering approaches discussed include biobarriers, cometabolism, bioaugmentation, in situ oxidation, Fenton's Reagent, in situ bioremediation, and more.
