Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
The Effect Of 111 Trichloroethane Or Chloroform On Anaerobic Dechlorination Of Tetrachloroethene And Trichloroethene
Download The Effect Of 111 Trichloroethane Or Chloroform On Anaerobic Dechlorination Of Tetrachloroethene And Trichloroethene full books in PDF, epub, and Kindle. Read online The Effect Of 111 Trichloroethane Or Chloroform On Anaerobic Dechlorination Of Tetrachloroethene And Trichloroethene ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis The Effect of 1,1,1-trichloroethane Or Chloroform on Anaerobic Dechlorination of Tetrachloroethene and Trichloroethene by : Karrie Anne Dudiak
Download or read book The Effect of 1,1,1-trichloroethane Or Chloroform on Anaerobic Dechlorination of Tetrachloroethene and Trichloroethene written by Karrie Anne Dudiak and published by . This book was released on 1998 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The primary goal of this research was to determine the ability of a culture taken from a bulk-aerobic fluidized-bed reactor (FBR) to dechlorinate tetrachloroethylene (PCE) under anaerobic conditions when provided with an electron donor and nutrient source. Subsequent objectives examined the effects of toluene, 1,1,1-trichloroethane (TCA), and chloroform (CF) on the dechlorination of PCE."--Abstract.
Book Synopsis Methyl Chloroform and Trichloroethylene in the Environment by : D. M. Aviado
Download or read book Methyl Chloroform and Trichloroethylene in the Environment written by D. M. Aviado and published by CRC Press. This book was released on 2018-01-18 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present and subsequent volumes of this book, critical coverage of the literature will be combined with the fruits of original and highly relevant research carried out by Dr. D.M Aviado and his colleagues. The total effort constitutes an authoritative up-to-date appraisal of the knowledge needed to understand the inhalational toxicity and other biological effects of an important and ubiquitous class of chemical agents.
Book Synopsis Hazardous and Industrial Waste Proceedings, 30th Mid-Atlantic Conference by : Christensen L.
Download or read book Hazardous and Industrial Waste Proceedings, 30th Mid-Atlantic Conference written by Christensen L. and published by CRC Press. This book was released on 2014-07-17 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the Mid-Atlantic Industrial and Hazardous Waste Conference to bring together professionals interested in the advancement and application of technologies and methods for managing industrial and hazardous wastes.
Book Synopsis Kinetics of Reductive Dechlorination of Trichloroethane (TCA) by Anaerobic Biofilms by : Rittmann Bruce E.
Download or read book Kinetics of Reductive Dechlorination of Trichloroethane (TCA) by Anaerobic Biofilms written by Rittmann Bruce E. and published by . This book was released on 1995 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methyl Chloroform and Trichloroethylene in the Environment by : Domingo M. Aviado
Download or read book Methyl Chloroform and Trichloroethylene in the Environment written by Domingo M. Aviado and published by . This book was released on 1976 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synergistic Reductive Dechlorination of 1,1,1-trichloroethane and Trichloroethene and Aerobic Degradation of 1,4-dioxane by : Yihao Luo
Download or read book Synergistic Reductive Dechlorination of 1,1,1-trichloroethane and Trichloroethene and Aerobic Degradation of 1,4-dioxane written by Yihao Luo and published by . This book was released on 2018 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Widespread use of chlorinated solvents for commercial and industrial purposes makes co-occurring contamination by 1,1,1-trichloroethane (TCA), trichloroethene (TCE), and 1,4-dioxane (1,4-D) a serious problem for groundwater. TCE and TCA often are treated by reductive dechlorination, while 1,4-D resists reductive treatment. Aerobic bacteria are able to oxidize 1,4-D, but the biological oxidation of 1,4-D could be inhibited by TCA, TCE, and their reductive transformation products. To overcome the challenges from co-occurring contamination, I propose a two-stage synergistic system. First, anaerobic reduction of the chlorinated hydrocarbons takes place in a H2-based hollow-fiber "X-film" (biofilm or catalyst-coated film) reactor (MXfR), where "X-film" can be a "bio-film0" (MBfR) or an abiotic "palladium-film" (MPfR). Then, aerobic removal of 1,4-D and other organic compounds takes place in an O2-based MBfR. For the reductive part, I tested reductive bio-dechlorination of TCA and TCE simultaneously in an MBfR. I found that the community of anaerobic bacteria can rapidly reduce TCE to cis-dichloroethene (cis-DCE), but further reductions of cis-DCE to vinyl chloride (VC) and VC to ethene were inhibited by TCA. Also, it took months to grow a strong biofilm that could reduce TCA and TCE. Another problem with reductive dechlorination in the MBfR is that mono-chloroethane (MCA) was not reduced to ethane. In contrast, a film of palladium nano-particles (PdNPs), i.e., an MPfR, could the simultaneous reductions of TCA and TCE to mainly ethane, with only small amounts of intermediates: 1,1-dichloroethane (DCA) (~3% of total influent TCA and TCE) and MCA (~1%) in continuous operation. For aerobic oxidation, I enriched an ethanotrophic culture that could oxidize 1,4-D with ethane as the primary electron donor. An O2-based MBfR, inoculated with the enriched ethanotrophic culture, achieved over 99% 1,4-D removal with ethane as the primary electron donor in continuous operation. Finally, I evaluated two-stage treatment with a H2-based MPfR followed by an O2-MBfR. The two-stage system gave complete removal of TCA, TCE, and 1,4-D in continuous operation.
Book Synopsis Methyl Chloroform and Trichloroethylene in the Environment by : Domingo M. Aviado
Download or read book Methyl Chloroform and Trichloroethylene in the Environment written by Domingo M. Aviado and published by . This book was released on 2017 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In the present and subsequent volumes of this book, critical coverage of the literature will be combined with the fruits of original and highly relevant research carried out by Dr. D.M Aviado and his colleagues. The total effort constitutes an authoritative up-to-date appraisal of the knowledge needed to understand the inhalational toxicity and other biological effects of an important and ubiquitous class of chemical agents."--Provided by publisher.
Book Synopsis The Observed Stable Carbon Isotope Fractionation Effects of a Chloroform and 1,1,1-Trichloroethane Dechlorinating Culture by : Calvin Chi Hung Chan
Download or read book The Observed Stable Carbon Isotope Fractionation Effects of a Chloroform and 1,1,1-Trichloroethane Dechlorinating Culture written by Calvin Chi Hung Chan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Organohalide-Respiring Bacteria by : Lorenz Adrian
Download or read book Organohalide-Respiring Bacteria written by Lorenz Adrian and published by Springer. This book was released on 2016-08-03 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the current state of knowledge concerning bacteria that use halogenated organic compounds as respiratory electron acceptors. The discovery of organohalide-respiring bacteria has expanded the range of electron acceptors used for energy conservation, and serves as a prime example of how scientific discoveries are enabling innovative engineering solutions that have transformed remediation practice. Individual chapters provide in-depth background information on the discovery, isolation, phylogeny, biochemistry, genomic features, and ecology of individual organohalide-respiring genera, including Dehalococcoides, Dehalogenimonas, Dehalobacter, Desulfitobacterium and Sulfurospirillum, as well as organohalide-respiring members of the Deltaproteobacteria. The book introduces readers to the fascinating biology of organohalide-respiring bacteria, offering a valuable resource for students, engineers and practitioners alike.
Book Synopsis Transformation of Carbon Tetrachloride and Chloroform by Trichloroethene Respiring Anaerobic Mixed Cultures and Supernatant by : Kyle E. Vickstrom
Download or read book Transformation of Carbon Tetrachloride and Chloroform by Trichloroethene Respiring Anaerobic Mixed Cultures and Supernatant written by Kyle E. Vickstrom and published by . This book was released on 2016 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon tetrachloride (CT) and chloroform (CF) were transformed in batch reactor experiments conducted with anaerobic dechlorinating cultures and supernatant (ADC+S) harvested from continuous flow reactors. The Evanite (EV-5L) and Victoria/Stanford (VS-5L) cultures capable of respiring trichloroethene (TCE), 1,2-cis-dichloroethene (cDCE), and vinyl chloride (VC) to ethene (ETH) were grown in continuous flow reactors receiving an influent feed of saturated TCE (10 mM; 60 mEq) and formate (45 mM; 90 mEq) but no CT or CF. In all experiments, cells and supernatant were harvested from the chemostats and inoculated into batch reactors. Transformation of various concentrations of CT (0.86, 2.6, or 8.6 [micro]M), CF (2.1 or 21.1 [micro]M), dichloromethane (DCM; 23.1 [micro]M), and TCE (50 [micro]M) was examined. CT transformation was complete and exhibited pseudo-first order kinetics with CF as the primary measured transformation product in all treatments. Lesser amounts of DCM and carbon disulfide (CS2) were measured leading to an overall mass balance of 20-40% of the original mass as CT accounted for. An analytical first order solution was developed to model CT degradation and product formation under multiple conditions. Cells poisoned with 50 mM sodium azide (NaN3) catalyzed rapid and complete CT transformation suggesting a greater importance of redox active cofactors than live cells in the abiotic and cometabolic transformation. DCM and CS2 however were not produced in the poisoned treatments. TCE and CT simultaneous transformation occurred with an approximately two-fold increase in the CT degradation rate while maintaining complete TCE respiration to ETH. During the initial round of TCE respiration, the rate limiting step was VC to ETH, which was impacted by the presence of CT and CF. A subsequent addition of 50 [micro]M TCE showed a substantial decline in the rates of reductive dechlorination owing to the inhibitory effects of long term exposure to CF. The results clearly demonstrate that transformation can be promoted by anaerobic dechlorinating cultures and supernatant not previously acclimated to CT and CF. However, abiotic reactions account for much of the observed transformation. The role of CF inhibition on H2 utilization by the culture was also explored. Sodium formate was provided as a rapid release substrate, providing H2 as an electron donor. H2 partial pressures were tracked throughout the course of the kinetic experiments. The rapid transformation of CT to CF made it not possible to determine if CT inhibited H2 use by the anaerobic dechlorinating cultures. However, the rapid buildup and subsequent slow transformation of CF was found to reversibly inhibit H2 consumption for homoacetogenesis. It was found that an aqueous CF concentration above 0.4 [micro]M or 0.6 [micro]M inhibited H2 consumption by the EV-5L and VS-5L cultures, respectively. This result differed for the VS-5L culture when metabolizing TCE in the presence of CT and CF. The VS-5L culture consumed H2 at CF concentrations as high as 1.3 [micro]M. The culture may have been partially inhibited at CF concentrations greater than 0.6 [micro]M, which is shown by slower consumption of H2 than controls that did not contain CF. The results demonstrate that CF reversibly inhibits the consumption of H2 by the anaerobic dechlorinating cultures, and that more research is required to determine if it is through a chemical inhibition or toxicity.
Book Synopsis Environmental Forensics by : Robert D. Morrison
Download or read book Environmental Forensics written by Robert D. Morrison and published by Elsevier. This book was released on 2010-08-04 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental forensics is the application of scientific techniques for the purpose of identifying the source and age of a contaminant. Over the past several years, this study has been expanding as a course of study in academia, government and commercial markets. The US Environmental Protection Agency (EPA), Federal Bureau of Investigation (FBI), and Federal Emergency Management Agency (FEMA) are among the governmental agencies that utilize the study of environmental forensics to ensure national security and to ensure that companies are complying with standards. Even the International Network for Environmental Compliance and Enforcement (INECE), a group supported by the European Commission and the World Bank, utilizes the study of environmental forensics as it applies to terror threats.This title is a hands-on guide for environmental scientists, engineers, consultants and industrial scientists to identify the origin and age of a contaminant in the environment and the issues involved in the process. An expansion of the authors' first title with Academic Press, Introduction to Environmental Forensics, this is a state-of-the-art reference for those exploring the scientific techniques available. - Up-to-date compendium for referencing forensic techniques unique to particular contaminants. - International scientific unit system - Contributors from around the world providing international examples and case studies.
Book Synopsis Hazardous and Industrial Wastes by :
Download or read book Hazardous and Industrial Wastes written by and published by . This book was released on 1998 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sequential Transformation of Carbon Tetrachloride, Perchloroethylene, and 1,1, 1-Trichloroethane Using Methanogenic and Methanotrophic Conditions by : Sarah Jane Christ
Download or read book Sequential Transformation of Carbon Tetrachloride, Perchloroethylene, and 1,1, 1-Trichloroethane Using Methanogenic and Methanotrophic Conditions written by Sarah Jane Christ and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A methanogenic-methanotrophic system has been established to assess the capability of sequential treatment to transform the chlorinated aliphatics perchloroethylene (PCE), carbon tetrachloride (CT) and 1,1,1-trichloroethane (1, 1,1-TCA). Experiments compared the transformation of PCE alone and in a mixture of the target compounds. A comparison of acetate and iron as electron donors was also made. Data from the anaerobic systems have shown that PCE transformation is inhibited when in a mixture with CT and 1,1,1-TCA compared to when it is fed alone. When iron is the electron donor, PCE and 1,1,1-TCA are transformed without an acclimation period. CT was completely transformed regardless of the electron donor used. The acetate-fed system required approximately 60 days to acclimate to 1,1,1-TCA and 70 days for acclimation to PCE. Although the sequential system has been constructed, sampling from the aerobic column was not done before the thesis project ended. More investigation is required to determine the ability of the sequential system to degrade PCE, CT, and 1,1,1- TCA.
Book Synopsis Volatile Organic Compounds in the Atmosphere by : Ralf Koppmann
Download or read book Volatile Organic Compounds in the Atmosphere written by Ralf Koppmann and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every day, large quantities of volatile organic compounds (VOCs) are emitted into the atmosphere from both anthropogenic and natural sources. The formation of gaseous and particulate secondary products caused by oxidation of VOCs is one of the largest unknowns in the quantitative prediction of the earth’s climate on a regional and global scale, and on the understanding of local air quality. To be able to model and control their impact, it is essential to understand the sources of VOCs, their distribution in the atmosphere and the chemical transformations which remove these compounds from the atmosphere. In recent years techniques for the analysis of organic compounds in the atmosphere have been developed to increase the spectrum of detectable compounds and their detection limits. New methods have been introduced to increase the time resolution of those measurements and to resolve more complex mixtures of organic compounds. Volatile Organic Compounds in the Atmosphere describes the current state of knowledge of the chemistry of VOCs as well as the methods and techniques to analyse gaseous and particulate organic compounds in the atmosphere. The aim is to provide an authoritative review to address the needs of both graduate students and active researchers in the field of atmospheric chemistry research.
Book Synopsis Toxicological Profile for Trichloroethylene by :
Download or read book Toxicological Profile for Trichloroethylene written by and published by . This book was released on 1997 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioremediation and Phytoremediation Technologies in Sustainable Soil Management by : Junaid Ahmad Malik
Download or read book Bioremediation and Phytoremediation Technologies in Sustainable Soil Management written by Junaid Ahmad Malik and published by CRC Press. This book was released on 2022-06-30 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 4-volume set focuses on the use of microbial bioremediation and phytoremediation to clean up pollutants in soil, such as pesticides, petroleum hydrocarbons, metals, and chlorinated solvents, which reduce the soil's fertility and renders it unfit for plant growth. Volume 2: Microbial Approaches and Recent Trends focuses on new and emerging techniques and approaches to address soil pollution. These include the use of rhizobacteria, archaea, cyanobacteria, and microalgae as biofertilizers and for soil bioremediation efforts. New technologies for assessment of soil bioremediation are explored also. The chapters provide in-depth coverage of the mechanisms, advantages, and disadvantages of the technologies used and highlight the use of different microbial enzymes that are used in the process of bioremediation and phytoremediation to clean up different pollutants without causing damage to the natural environment. Other volumes in the 4-volume set: • Volume 1: Fundamental Aspects and Contaminated Sites • Volume 3: Inventive Techniques, Research Methods, and Case Studies • Volume 4: Degradation of Pesticides and Polychlorinated Biphenyls Together, these four volumes provide in-depth coverage of the mechanisms, advantages, and disadvantages of the bioremediation and phytoremediation technologies for safe and sustainable soil management. The diverse topics help to arm biologists, agricultural engineers, environmental and soil scientists and chemists with the information and tools they need to address soil toxins that are a dangerous risk to plants, wildlife, humans and, of course, the soil itself.
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 2012-10-02 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.
