Anaerobic Reductive Dehalogenation

Author : Hans Christof Holliger (Microbiologist, Switzerland)
Publisher :
ISBN 13 :
Total Pages : 129 pages
Book Rating : 4.49/5 ( download)

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Download or read book Reductive Dehalogenation by Anaerobic Bacteria written by Hans Christof Holliger (Microbiologist, Switzerland) and published by . This book was released on 1992 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Timothy Gerard Linkfield
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.48/5 ( download)

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Download or read book Anaerobic Reductive Dehalogenation written by Timothy Gerard Linkfield and published by . This book was released on 1985 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Lorenz Adrian
Publisher : Springer
ISBN 13 : 3662498758
Total Pages : 620 pages
Book Rating : 4.50/5 ( download)

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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.

Author : H. C. Holliger
Publisher :
ISBN 13 :
Total Pages : 129 pages
Book Rating : 4.10/5 ( download)

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Download or read book Reductive dehalogenation by anaerobic bacteria written by H. C. Holliger and published by . This book was released on 1992 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Nizar Ahmad Mustafa
Publisher :
ISBN 13 :
Total Pages : 362 pages
Book Rating : 4.96/5 ( download)

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Download or read book Numerical Simulation of Anaerobic Reductive Dechlorination of CAHs in Continuous Flow Systems written by Nizar Ahmad Mustafa and published by . This book was released on 2012 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Halogenated organic compounds have had widespread and massive applications in industry, agriculture, and private households, for example, as degreasing solvents, flame retardants and in polymer production. They are released to the environment through both anthropogenic and natural sources. The most common chlorinated solvents present as contaminants include tetrachloroethene (PCE, perchloroethene) and trichloroethene (TCE). These chlorinated solvents are problematic because of their health hazards and persistence in the environment, threatening human and environmental health. Microbial reductive dechlorination is emerging as a promising approach for the remediation of chlorinated solvents in aquifers. In microbial reductive dechlorination, specialized bacteria obtain energy for growth from metabolic dechlorination reactions that convert PCE to TCE, cis-1,2-dichloroethene (cDCE), vinyl chloride (VC), and finally to benign ethene. Field studies show incomplete dechlorination of PCE to ethene due to lack of electron donors or other populations competing for the electron donor. Mathematical models are good tools to integrate the processes affecting the fate and transport of chlorinated solvents in the subsurface. This thesis explores the use of modeling to provide a better understanding of the reductive dehalogenation process of chlorinated solvents and their competition with other microorganisms for available electron donors in continuous flow systems such as a continuous stirred tank reactor (CSTR) and a continuous flow column. The model is a coupled thermodynamic and kinetic model that includes inhibition kinetics for the dechlorination reactions, thermodynamic constraints on organic acids fermentation and has incorporated hydrogen competition among microorganisms such as homoacetogenesis, sulfate reducers and ferric iron reducers. The set of equations are coupled to those required for modeling a CSTR. The system of model equations was solved numerically using COMSOL 3.5 a, which employs finite-element methods. The kinetic model was verified by simulation results compared to previously published models and by electron balances. The simulation process progressed by simulating the anaerobic reductive dechlorination, coupled with thermodynamic limitation of electron donor fermentation in batch systems to the modeling of CSTR, and finally to simulate anaerobic reductive dechlorination in continuous flow column, aquifer column including the processes of advection, dispersion and sorption along with the microbial processes of dehalogenation, fermentation, iron and sulfate reduction. The simulations using the developed model captured the general trends of the chemical species, and a good job predicting the dynamics of microbial population responses either the CSTRs or continuous flow column. Although, the kinetic of anaerobic dechlorination processes of chlorinated solvents in those systems have been researched in the past, little progress has been made towards understanding the combined effects of the dechlorination and thermodynamic constraints in continuous flow systems. This work provides a rigorous mathematical model for describing the coupled effects of these processes.

Author : Judith L. Sims
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.3B/5 ( download)

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Download or read book Reductive Dehalogenation of Organic Contaminants in Soils and Ground Water written by Judith L. Sims and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Rittmann Bruce E.
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.53/5 ( download)

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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:

Author : Hans F. Stroo
Publisher : Springer Science & Business Media
ISBN 13 : 1461441153
Total Pages : 421 pages
Book Rating : 4.51/5 ( download)

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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 : Max M. Häggblom
Publisher : Springer Science & Business Media
ISBN 13 : 0306480115
Total Pages : 702 pages
Book Rating : 4.19/5 ( download)

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Download or read book Dehalogenation written by Max M. Häggblom and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt: Halogenated organic compounds constitute one of the largest groups of environmental chemicals. The industrial production of new halogenated organic compounds has increased throughout the last century peaking in the 1960s, and continuing in widespread use today. Organohalides are integral to a variety of industrial applications, including use as solvents, degreasing agents, biocides, pharmaceuticals, plasticizers, hydraulic and heat transfer fluids, and intermediates for chemical synthesis, to name a few. It is important to recognize the beneficial aspects of halogenated organic compounds, as well as their potentially deleterious impact on the environment and health. Recognition ofthe adverse environmental effects ofmanytypes oforganohalide compounds has led to efforts to reduce or eliminate the most problematic ones. Although organohalide compounds are typically considered to be anthropogenic industrial compounds, they have their counterpart in several thousands of natural biogenic and geogenic organohalides, representing most classes of organic chemicals. Natural sources account for a significant portion of the global organohalogen budget. This volume authored by recognized experts in the field provides a current perspective on how both natural and synthetic organohalides are formed and degraded, and how these processes are incorporated into a global halogen cycle. The focus is on microbial processes, since these play a major role both in the production and degradation, i. e. , cycling of halogenated organic compounds inthe environment. This book is organized into five parts. Part I, Introduction, provides a global perspective on the issues of organohalides and their fate in the environment.

Author : Naga Raju Maddela
Publisher : Springer Nature
ISBN 13 : 303080108X
Total Pages : 455 pages
Book Rating : 4.83/5 ( download)

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Download or read book Innovations in Biotechnology for a Sustainable Future written by Naga Raju Maddela and published by Springer Nature. This book was released on 2021-10-23 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume compiles the latest improvements in the field of biotechnology. It focuses on topics that comprises industrial, environment, agricultural and medical related issues to technology and biological studies and exhibits the correlation between the biological world and the dependence of humans on it. The book is organized into five parts covering the role of biotechnology in industrial products, environmental remediation, agriculture and pharmacological agents. Ranging from micro-scale studies to macro, it covers a huge domain of agricultural biotechnology and focuses on important commercial crops (e.g. cacao and coffee), arbuscular mycorrhizal fungi, flow and distribution of phosphorus in agricultural soils in the Latin American region. Overall, the book portrays the importance of modern biotechnology and its role in solving the problems in modern day life. The book is a ready reference for practicing students, researchers of environmental engineering, chemical engineering, agricultural engineering, and other allied fields likewise.