Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Evaluation Of An Aerobic Consortium For The Degradation Of Trichloroethylene full books in PDF, epub, and Kindle. Read online Evaluation Of An Aerobic Consortium For The Degradation Of Trichloroethylene ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Liliana Meza
Publisher :
ISBN 13 :
Total Pages : 310 pages
Book Rating : 4.:/5 (957 download)
Download or read book Evaluation of an Aerobic Consortium for the Degradation of Trichloroethylene written by Liliana Meza and published by . This book was released on 2003 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sachiyo Iwashita
Publisher :
ISBN 13 :
Total Pages : 302 pages
Book Rating : 4.:/5 (574 download)
Download or read book Enhancing Aerobic Biological Degradation of Trichloroethylene and Metal Lubricants written by Sachiyo Iwashita and published by . This book was released on 2004 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. J. K. Nelson
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (227 download)
Download or read book Aerobic Biodegradation of Trichloroethylene written by M. J. K. Nelson and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Samples, suspected of having a capability to biologically transform trichloroethylene (TCE), were provided by Tyndall Air Force Base for verification and characterization of activity. Biological transformation of TCE was not observed in these samples. Other soil and water samples, obtained from the Pensacola area, were therefore screened for TCE degradation activity. One sample was found to be responsible for the metabolic activity was isolated. The isolated organism degrades TCE (up to 3.4 micro mole) to less than 0.02 micro mole within 24 hours. TCE degradation occurred only when water from the original site of isolation and 02 were in the medium. The isolate converted TCE into CO2 and unidentified nonvolatile products. Phenol, toluene ortho- and meta-cresol were found to replace the site water requirement for TCE metabolism.
Author : Qiong Liao
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (25 download)
Download or read book Experiments in Aerobic and Anaerobic Biodegradation of Trichloroethylene written by Qiong Liao and published by . This book was released on 1991 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The removal of trichloroethylene (TCE) from industrial waste has been intensively studied in recent years, Biodegradation has been determined to be an effective treatment for TCE in the environment. Many researchers have studied the biodegradation of TOE and obtained successful results based on the use of specific isolated bacteria. At the NJIT Biotechnology Laboratory, a new method is being developed in which immobilized activated sludge is used to degrade several toxic chemicals in various reactor configurations. The objective of this research is to determine if these methods can be extended to treat TCE. Activated sludge from a wastewater treatment plant was acclimated with TCE and then used in aerobic experi ments. Some commonly and effectively used methods from our laboratory, such as membrane, shaker flask, and microassav reactors were studied with activated sludge. In the membrane reactor experiment, microorganisms from activated sludge were immobilized on microporous plastic sheet (MPS) by attachment. TCE solution was pumped through the reactor containing microorganisms attached on MPS sheet and TCE variation was analyzed with GC. Experiments were conducted in batch recirculation flow mode, A series of shaker flask experiments were constructed to check the result of preinduction for activated sludge with some inducers. The activity of activated sludge was studied by examining the oxygen uptake in a microassay reactor. This reactor has been a valuable tool in the enzyme kinetic studies due to its reproducibility and accuracy of the data acquired. Anaerobic sludge was also used in this study, and taken from a secondary treatment plant. It was digested in an anaerobic digester with a specific nutrient medium and then incubated in an incubator at 37°C for anaerobic treatment. In shaker flask experiments, TCE was degraded by NJIT activated and preinduced sludge with inducers. Biodegradation rates were found to be 0.36, 0.49, 0.44, 0.32 nmol/min per mg of dry biomass with sodium acetate, phenol, toluene, and sodium benzoate, respectively. They are greater than the rates for bacterial strains 46-1, G4, and Alcaligenes eutrophus JMP134 reported in the literature. However, the results of the membrane reactor, the microassay reactor, and the anaerobic experiments indicate that TCE biodegradation rates are far lower than typical biodegradation rate, which is 2.4 nmol/min per mg of dry biomass, for phenol, chlorophenol, and other substrates in NJIT Biodegradation System.
Author : Alexandra LaPat Polasko
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.:/5 (14 download)
Download or read book Sequential Anaerobic-Aerobic Biodegradation of Trichloroethylene and 1,4-Dioxane written by Alexandra LaPat Polasko and published by . This book was released on 2017 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chlorinated ethenes, such as trichloroethylene (TCE) and their stabilizers, such as 1,4- dioxane, are widespread groundwater contaminants. Bioremediation can be an effective approach, but opposing redox conditions favored by chlorinated ethane-and 1,4-dioxane- degrading bacteria pose a challenge for their concurrent bioremediation. We engineered a microbial community composed of the anaerobic chlorinated ethene-degrading consortium (KB-1i ) and aerobic (Pseudonocardia dioxanivorans CB1190 (CB1190)) bacterial strain, which uses 1,4-dioxane. After anaerobic incubation and TCE reduction, CB1190 + KB-1i coculture was viable and rapidly biodegraded 1,4-dioxane in the presence of oxygen. Aerobic biodegradation of cis-1,2-dichloroethylene (cDCE) by CB1190 was also described. As a plume disperses downgradient, the redox conditions change from anaerobic (source zone) to aerobic (leading edge). The results from this study demonstrate that the engineered microbial community can survive redox changes and biodegrade chlorinated ethenes and 1,4-dioxane. This approach could reduce the cost, energy, and substrates required for in-situ bioremediation of contaminant mixtures.
Author : Rebecca M. Cline
Publisher :
ISBN 13 :
Total Pages : 392 pages
Book Rating : 4.:/5 (559 download)
Download or read book Laboratory Evaluation of Natural and Enhanced Biodegradation of Trichloroethene and Dichloromethane Under Anaerobic Conditions written by Rebecca M. Cline and published by . This book was released on 2003 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth Jay Malachowsky
Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (283 download)
Download or read book Aerobic Degradation of Trichloroethylene, Vinyl Chloride, and Aromatic Compounds by Rhodococci Species written by Kenneth Jay Malachowsky and published by . This book was released on 1992 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jian Wang
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (957 download)
Download or read book Aerobic Whole-cell and Enzymatic Degradation of Trichloroethylene and Tetrachloroethylene for Waste Minimization written by Jian Wang and published by . This book was released on 2001 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard H. Oliver
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (34 download)
Download or read book The Cometabolic Degradation of Trichloroethylene Under Aerobic Conditions written by Richard H. Oliver and published by . This book was released on 1993 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Project Report - Coupled Biogeochemical Process Evaluation for Conceptualizing Trichloriethylene Co-Metabolism written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Trichloroethene (TCE) (also known as trichloroethylene) is a common contaminant in groundwater. TCE is regulated in drinking water at a concentration of 5 æg/L, and a small mass of TCE has the potential to contaminant large volumes of water. The physical and chemical characteristics of TCE allow it to migrate quickly in most subsurface environments, and thus large plumes of contaminated groundwater can form from a single release. The migration and persistence of TCE in groundwater can be limited by biodegradation. TCE can be biodegraded via different processes under either anaerobic or aerobic conditions. Anaerobic biodegradation is widely recognized, but aerobic degradation is less well recognized. Under aerobic conditions, TCE can be oxidized to non hazardous conditions via cometabolic pathways. This study applied enzyme activity probes to demonstrate that cometabolic degradation of TCE occurs in aerobic groundwater at several locations, used laboratory microcosm studies to determine aerobic degradation rates, and extrapolated lab-measured rates to in situ rates based on concentrations of microorganisms with active enzymes involved in cometabolic TCE degradation. Microcosms were constructed using basalt chips that were inoculated with microorganisms to groundwater at the Idaho National Laboratory Test Area North TCE plume by filling a set of Flow-Through In Situ Reactors (FTISRs) with chips and placing the FTISRs into the open interval of a well for several months. A parametric study was performed to evaluate predicted degradation rates and concentration trends using a competitive inhibition kinetic model, which accounts for competition for enzyme active sites by both a growth substrate and a cometabolic substrate. The competitive inhibition kinetic expression was programmed for use in the RT3D reactive transport package. Simulations of TCE plume evolution using both competitive inhibition kinetics and first order decay were performed.
Author : Hans F. Stroo
Publisher : Springer Science & Business Media
ISBN 13 : 1461441153
Total Pages : 421 pages
Book Rating : 4.4/5 (614 download)
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.
Author : Hans F. Stroo
Publisher : Springer Science & Business Media
ISBN 13 : 1441914013
Total Pages : 807 pages
Book Rating : 4.4/5 (419 download)
Download or read book In Situ Remediation of Chlorinated Solvent Plumes written by Hans F. Stroo and published by Springer Science & Business Media. This book was released on 2010-09-10 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the late 1970s and early 1980s, our nation began to grapple with the legacy of past disposal practices for toxic chemicals. With the passage in 1980 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. S. Department of Defense (DoD), the nation’s largest industrial organization, also recognized that it too had a legacy of contaminated sites. Historic operations at Army, Navy, Air Force, and Marine Corps facilities, ranges, manufacturing sites, shipyards, and depots had resulted in widespread contamination of soil, groundwater, and sediment. While Superfund began in 1980 to focus on remediation of heavily contaminated sites largely abandoned or neglected by the private sector, the DoD had already initiated its Installation Restoration Program in the mid-1970s. In 1984, the DoD began the Defense Environmental Restoration Program (DERP) for contaminated site assessment and remediation. Two years later, the U. S. Congress codified the DERP and directed the Secretary of Defense to carry out a concurrent program of research, development, and demonstration of innovative remediation technologies. As chronicled in the 1994 National Research Council report, “Ranking Hazardous-Waste Sites for Remedial Action,” our early estimates on the cost and suitability of existing techn- ogies for cleaning up contaminated sites were wildly optimistic. Original estimates, in 1980, projected an average Superfund cleanup cost of a mere $3.
Author : M.H. van Agteren
Publisher : Springer Science & Business Media
ISBN 13 : 9780792349891
Total Pages : 506 pages
Book Rating : 4.3/5 (498 download)
Download or read book Handbook on Biodegradation and Biological Treatment of Hazardous Organic Compounds written by M.H. van Agteren and published by Springer Science & Business Media. This book was released on 1998-05-31 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of synthetic organic chemicals into the environment during the last few decades has given rise to major concern about the ecotoxicological effects and ultimate fate of these compounds. The pollutants that are considered to be most hazardous because of their intrinsic toxicity, high exposure level, or recalcitrant behavior in the environment have been placed on blacklists and other policy priority lists. The fate of synthetic compounds that enter the environment is mainly determined by their rate of biodegradation, which therefore also has a major effect on the degree of bioaccumulation and the risk of ecotoxicological effects. The degree and rate of biodegradation is also of critical importance for the feasibility of biological techniques to clean up contaminated sites and waste streams. The biodegradation of xenobiotics has thus been the subject of numerous studies, which resulted in thousands of publications in scientific journals, books, and conference proceedings. These studies led to a deeper understanding of the diversity of biodegradation processes. As a result, it has become possible to enhance the rate of degradation of recalcitrant pollutants during biological treatment and to design completely new treatment processes. At present, much work is being done to expand the range of pollutants to which biodegradation can be applied, and to make treatment techniques less expensive and better applicable for waste streams which are difficult to handle.
Author : B. R. Chaudhary
Publisher :
ISBN 13 : 9788184871135
Total Pages : 0 pages
Book Rating : 4.8/5 (711 download)
Download or read book Plant Genome written by B. R. Chaudhary and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the wide-ranging, multi-disciplinary book "PLANT GENOME: Diversity, Conservation and Manipulation" is to provide in depth knowledge and an attempt to highlight the current manipulations taking place in plant genome research. The book incorporates topics on plant genome, its diversity, conservation and manipulation, distributed in fifteen original articles written by eminent scholars. The authors have tried to amalgamate up-to-date information, is pertinent for researchers and students alike. The chapter include Molecular mechanisms of DNA damage and repair, Comet assay to assess DNA damage and genotoxic stress in plants, Molecular evaluation of plant genomic biodiversity, Biotechnological exploitations of cyanobacteria, Metabolic engineering: a multifarious promising tool of post-genomic era, Molecular map based breeding and gene mapping for valuable pharmaceutical alkaloid yields, a prospect strategy to unfold molecular mechanism of retinoblastoma (RB) gene pathway in human, Amaranthus: genomic diversity, evolution and its importance, Ploidy: a prime facilitator of speciation and evolution in plants, Biodegradation of sodium dodecyl sulphate, Microcystins, a novel class of toxins from cyanobacteria, and Banana genomics. The original articles include Wide hybridization in crop plants, Altered adaptive response of wheat (Triticum aestivum L.) and Production of wheat haploids by chromosome elimination technique.
Author :
Publisher :
ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (319 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Trevor Jones
Publisher : Editions OPHRYS
ISBN 13 : 9782710811350
Total Pages : 902 pages
Book Rating : 4.8/5 (113 download)
Download or read book Petroleum Microbiology written by Trevor Jones and published by Editions OPHRYS. This book was released on with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrocarbons and their derivatives (oxygenated and chlorinated, in particular), both natural and xenobiotic, represent a very large class of compounds whose conversions and degradation by microorganisms cover an extremely rich field, whose concepts are detailed in this book. The fascinating evolution of these concepts over the last twenty years has revealed the extent of the processes implemented in the environment and has multiplied their industrial applications. The resulting achievements and the current developments are described in this book.The English edition of this reference manual is an entirely revised and updated version of the French edition. It is intended for professionals, microbiologists and chemists, as well as scientists, engineers, teachers and post-doctoral researchers, who are interested by the conversions of hydrocarbons and by microbial ecology.The French edition of this book was awarded a special mention for engineering education text book by the Roberval Prize committee in 2007.
Author :
Publisher :
ISBN 13 :
Total Pages : 898 pages
Book Rating : 4.3/5 (91 download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
