Non-equilibrium Conditions During Organic Contaminant Mobilization, Transport and Degradation in the Subsurface

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ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (96 download)

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Book Synopsis Non-equilibrium Conditions During Organic Contaminant Mobilization, Transport and Degradation in the Subsurface by : Markus Wehrer

Download or read book Non-equilibrium Conditions During Organic Contaminant Mobilization, Transport and Degradation in the Subsurface written by Markus Wehrer and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processes determining the fate of organic contaminants in the subsurface are often characterized by non-equilibrium conditions. This habilitation treatise explores the kinetic characteristics of the processes influencing the fate of organic contaminants in the subsurface employing computational-, laboratory- and field experiments. In the first part, release and transport processes of hydrophobic contaminants from multicomponent non-aqueous phase liquids (NAPLs) are examined in 5 individual studies. These comprise a review of the literature on the fate of contaminants at manufactured gas plants, laboratory experiments and modeling of the release kinetics of polycyclic aromatic hydrocarbons (PAHs) from aged and fresh tar phases, and a field study of a crude oil contaminated aquifer employing geophysical, hydrogeochemical and microbiological methods. The second part comprises three studies, which explore transport and degradation kinetics of hydrophilic compounds, which are used as deicing chemicals at airports. In this part, a laboratory percolation experiment was evaluated with a numerical model and the degradation of the deicing chemicals propylene glycol and formate under field conditions was characterized in lysimeters, employing, among other methods, electrical resistivity tomography (ERT). The studies show that multiple interdependencies exist between contaminant transport time-scales and time-scales of mobilization and degradation. Solubilization of PAHs from tar oils was diffusionally highly restricted with extremely long equilibration times. Hydrophobic compounds are often subject to mobilization and transport as colloids, which was observed in all experimental studies with aged NAPLs. Degradation kinetics of deicing chemicals were found to be dependent on a dynamic reaction of the biomass in column experiments and did not agree with first-order kinetics. The field lysimeter experiments showed that the ratio of degradation time-scale to transport time-scale determines the fate of propylene glycol. As a consequence, non-equilibrium transport conditions resulted in rapid discharge of large amounts of propylene glycol from the topsoil. The results have consequences for experimental procedures aiming for process identification and parameter quantification of mobilization, transport and degradation of organic contaminants. For a realistic estimation of risk of exposure, natural attenuation and biological remediation, experimental and numerical evaluation including transport conditions is inevitable.

Mobility and Degradation of Organic Contaminants in Subsurface Environments

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Publisher : CRC Press
ISBN 13 : 100015811X
Total Pages : 426 pages
Book Rating : 4.0/5 (1 download)

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Book Synopsis Mobility and Degradation of Organic Contaminants in Subsurface Environments by : Warren J. Lyman

Download or read book Mobility and Degradation of Organic Contaminants in Subsurface Environments written by Warren J. Lyman and published by CRC Press. This book was released on 2020-11-26 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book identifies the most important "rules" governing transport, partitioning, retention and transformation of leaked motor fuels in the underground environment. It examines micro-scale fate and transport processes as a means toward promoting a better understanding of larger scale movement of contaminants. Environmental scientists, engineers, consultants, and managers will find Mobility and Degradation of Organic Contaminants in Subsurface Environments to be a useful technical handbook. Less experienced users will appreciate its in-depth explanations of the fate and transport processes vital to effective remedial response. More experienced users will use the book as a source of information, data and equations to support quantitative assessments of pollutant fate and transport.

Subsurface Transport and Fate Processes

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Publisher : CRC Press
ISBN 13 : 1351093894
Total Pages : 326 pages
Book Rating : 4.3/5 (51 download)

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Book Synopsis Subsurface Transport and Fate Processes by : Robert C. Knox

Download or read book Subsurface Transport and Fate Processes written by Robert C. Knox and published by CRC Press. This book was released on 2018-01-10 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the first comprehensive reference volume available on subsurface transport and fate processes. The volume is organized into four sections covering the basics of contaminant properties and how they affect transport and fate, the fundamental processes affecting subsurface transport and fate of contaminants, applications of transport and fate information to various contaminant types, and utilization of transport and fate information for predicting contaminant behavior. Specific topics such as traditional hydrodynamic processes of advection and dispersion, facilitated transport and contaminant flushing, and individual ground water contaminants are also explored in detail. Subsurface Transport and Fate Processes is ideal for environmental and ground water consultants, regulatory agency personnel, and educators in geology, hydrogeology, civil engineering, and environmental engineering.

Organic Contamination of Stratified Porous Media

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ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (247 download)

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Book Synopsis Organic Contamination of Stratified Porous Media by : Abbas H. Elzein

Download or read book Organic Contamination of Stratified Porous Media written by Abbas H. Elzein and published by . This book was released on 1999 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bioavailability of Contaminants in Soils and Sediments

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Publisher : National Academies Press
ISBN 13 : 0309086256
Total Pages : 433 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Bioavailability of Contaminants in Soils and Sediments by : National Research Council

Download or read book Bioavailability of Contaminants in Soils and Sediments written by National Research Council and published by National Academies Press. This book was released on 2003-05-03 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.

Reactive Transport Modeling

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Publisher : John Wiley & Sons
ISBN 13 : 111906001X
Total Pages : 598 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Reactive Transport Modeling by : Yitian Xiao

Download or read book Reactive Transport Modeling written by Yitian Xiao and published by John Wiley & Sons. This book was released on 2018-03-12 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Teaches the application of Reactive Transport Modeling (RTM) for subsurface systems in order to expedite the understanding of the behavior of complex geological systems This book lays out the basic principles and approaches of Reactive Transport Modeling (RTM) for surface and subsurface environments, presenting specific workflows and applications. The techniques discussed are being increasingly commonly used in a wide range of research fields, and the information provided covers fundamental theory, practical issues in running reactive transport models, and how to apply techniques in specific areas. The need for RTM in engineered facilities, such as nuclear waste repositories or CO2 storage sites, is ever increasing, because the prediction of the future evolution of these systems has become a legal obligation. With increasing recognition of the power of these approaches, and their widening adoption, comes responsibility to ensure appropriate application of available tools. This book aims to provide the requisite understanding of key aspects of RTM, and in doing so help identify and thus avoid potential pitfalls. Reactive Transport Modeling covers: the application of RTM for CO2 sequestration and geothermal energy development; reservoir quality prediction; modeling diagenesis; modeling geochemical processes in oil & gas production; modeling gas hydrate production; reactive transport in fractured and porous media; reactive transport studies for nuclear waste disposal; reactive flow modeling in hydrothermal systems; and modeling biogeochemical processes. Key features include: A comprehensive reference for scientists and practitioners entering the area of reactive transport modeling (RTM) Presented by internationally known experts in the field Covers fundamental theory, practical issues in running reactive transport models, and hands-on examples for applying techniques in specific areas Teaches readers to appreciate the power of RTM and to stimulate usage and application Reactive Transport Modeling is written for graduate students and researchers in academia, government laboratories, and industry who are interested in applying reactive transport modeling to the topic of their research. The book will also appeal to geochemists, hydrogeologists, geophysicists, earth scientists, environmental engineers, and environmental chemists.

Contaminants in the Subsurface

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Publisher : National Academies Press
ISBN 13 : 030909447X
Total Pages : 371 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Contaminants in the Subsurface by : National Research Council

Download or read book Contaminants in the Subsurface written by National Research Council and published by National Academies Press. This book was released on 2005-04-23 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: At hundreds of thousands of commercial, industrial, and military sites across the country, subsurface materials including groundwater are contaminated with chemical waste. The last decade has seen growing interest in using aggressive source remediation technologies to remove contaminants from the subsurface, but there is limited understanding of (1) the effectiveness of these technologies and (2) the overall effect of mass removal on groundwater quality. This report reviews the suite of technologies available for source remediation and their ability to reach a variety of cleanup goals, from meeting regulatory standards for groundwater to reducing costs. The report proposes elements of a protocol for accomplishing source remediation that should enable project managers to decide whether and how to pursue source remediation at their sites.

Monitored Natural Attenuation of Inorganic Contaminants in Ground Water

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ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Monitored Natural Attenuation of Inorganic Contaminants in Ground Water by :

Download or read book Monitored Natural Attenuation of Inorganic Contaminants in Ground Water written by and published by . This book was released on 2007 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: V.3 ... consists of individual chapters that describe 1) the conceptual background for radionuclides, including tritium, radon, strontium, technetium, uranium, iodine, radium, thorium, cesium, plutonium-americium and 2) data requirements to be met during site characterization.

Natural Attenuation for Groundwater Remediation

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Publisher : National Academies Press
ISBN 13 : 0309069327
Total Pages : 289 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Natural Attenuation for Groundwater Remediation by : Commission on Geosciences, Environment, and Resources

Download or read book Natural Attenuation for Groundwater Remediation written by Commission on Geosciences, Environment, and Resources and published by National Academies Press. This book was released on 2000-08-31 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade, officials responsible for clean-up of contaminated groundwater have increasingly turned to natural attenuation-essentially allowing naturally occurring processes to reduce the toxic potential of contaminants-versus engineered solutions. This saves both money and headaches. To the people in surrounding communities, though, it can appear that clean-up officials are simply walking away from contaminated sites. When is natural attenuation the appropriate approach to a clean-up? This book presents the consensus of a diverse committee, informed by the views of researchers, regulators, and community activists. The committee reviews the likely effectiveness of natural attenuation with different classes of contaminants-and describes how to evaluate the "footprints" of natural attenuation at a site to determine whether natural processes will provide adequate clean-up. Included are recommendations for regulatory change. The committee emphasizes the importance of the public's belief and attitudes toward remediation and provides guidance on involving community stakeholders throughout the clean-up process. The book explores how contamination occurs, explaining concepts and terms, and includes case studies from the Hanford nuclear site, military bases, as well as other sites. It provides historical background and important data on clean-up processes and goes on to offer critical reviews of 14 published protocols for evaluating natural attenuation.

Characterization, Modeling, Monitoring, and Remediation of Fractured Rock

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Publisher : National Academies Press
ISBN 13 : 0309373727
Total Pages : 177 pages
Book Rating : 4.3/5 (93 download)

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Book Synopsis Characterization, Modeling, Monitoring, and Remediation of Fractured Rock by : National Academies of Sciences, Engineering, and Medicine

Download or read book Characterization, Modeling, Monitoring, and Remediation of Fractured Rock written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2021-01-29 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fractured rock is the host or foundation for innumerable engineered structures related to energy, water, waste, and transportation. Characterizing, modeling, and monitoring fractured rock sites is critical to the functioning of those infrastructure, as well as to optimizing resource recovery and contaminant management. Characterization, Modeling, Monitoring, and Remediation of Fractured Rock examines the state of practice and state of art in the characterization of fractured rock and the chemical and biological processes related to subsurface contaminant fate and transport. This report examines new developments, knowledge, and approaches to engineering at fractured rock sites since the publication of the 1996 National Research Council report Rock Fractures and Fluid Flow: Contemporary Understanding and Fluid Flow. Fundamental understanding of the physical nature of fractured rock has changed little since 1996, but many new characterization tools have been developed, and there is now greater appreciation for the importance of chemical and biological processes that can occur in the fractured rock environment. The findings of Characterization, Modeling, Monitoring, and Remediation of Fractured Rock can be applied to all types of engineered infrastructure, but especially to engineered repositories for buried or stored waste and to fractured rock sites that have been contaminated as a result of past disposal or other practices. The recommendations of this report are intended to help the practitioner, researcher, and decision maker take a more interdisciplinary approach to engineering in the fractured rock environment. This report describes how existing tools-some only recently developed-can be used to increase the accuracy and reliability of engineering design and management given the interacting forces of nature. With an interdisciplinary approach, it is possible to conceptualize and model the fractured rock environment with acceptable levels of uncertainty and reliability, and to design systems that maximize remediation and long-term performance. Better scientific understanding could inform regulations, policies, and implementation guidelines related to infrastructure development and operations. The recommendations for research and applications to enhance practice of this book make it a valuable resource for students and practitioners in this field.

Behavior of Metals in Soils

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Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (359 download)

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Book Synopsis Behavior of Metals in Soils by : Joan E. McLean

Download or read book Behavior of Metals in Soils written by Joan E. McLean and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Groundwater and Soil Cleanup

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Publisher : National Academies Press
ISBN 13 : 0309065496
Total Pages : 301 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Groundwater and Soil Cleanup by : National Research Council

Download or read book Groundwater and Soil Cleanup written by National Research Council and published by National Academies Press. This book was released on 1999-11-21 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive, up-to-date review of technologies for cleaning up contaminants in groundwater and soil. It provides a special focus on three classes of contaminants that have proven very difficult to treat once released to the subsurface: metals, radionuclides, and dense nonaqueous-phase liquids such as chlorinated solvents. Groundwater and Soil Cleanup was commissioned by the Department of Energy (DOE) as part of its program to clean up contamination in the nuclear weapons production complex. In addition to a review of remediation technologies, the book describes new trends in regulation of contaminated sites and assesses DOE's program for developing new subsurface cleanup technologies.

Soil Screening Guidance

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ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Soil Screening Guidance by :

Download or read book Soil Screening Guidance written by and published by . This book was released on 1996 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

In Situ Bioremediation

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Publisher : National Academies Press
ISBN 13 : 0309048966
Total Pages : 225 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis In Situ Bioremediation by : National Research Council

Download or read book In Situ Bioremediation written by National Research Council and published by National Academies Press. This book was released on 1993-02-01 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ bioremediationâ€"the use of microorganisms for on-site removal of contaminantsâ€"is potentially cheaper, faster, and safer than conventional cleanup methods. But in situ bioremediation is also clouded in uncertainty, controversy, and mistrust. This volume from the National Research Council provides direction for decisionmakers and offers detailed and readable explanations of: the processes involved in in situ bioremediation, circumstances in which it is best used, and methods of measurement, field testing, and modeling to evaluate the results of bioremediation projects. Bioremediation experts representing academic research, field practice, regulation, and industry provide accessible information and case examples; they explore how in situ bioremediation works, how it has developed since its first commercial use in 1972, and what research and education efforts are recommended for the future. The volume includes a series of perspective papers. The book will be immediately useful to policymakers, regulators, bioremediation practitioners and purchasers, environmental groups, concerned citizens, faculty, and students.

Alternatives for Ground Water Cleanup

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Publisher : National Academies Press
ISBN 13 : 0309049946
Total Pages : 334 pages
Book Rating : 4.3/5 (9 download)

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Book Synopsis Alternatives for Ground Water Cleanup by : National Research Council

Download or read book Alternatives for Ground Water Cleanup written by National Research Council and published by National Academies Press. This book was released on 1994-02-01 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: There may be nearly 300,000 waste sites in the United States where ground water and soil are contaminated. Yet recent studies question whether existing technologies can restore contaminated ground water to drinking water standards, which is the goal for most sites and the result expected by the public. How can the nation balance public health, technological realities, and cost when addressing ground water cleanup? This new volume offers specific conclusions, outlines research needs, and recommends policies that are technologically sound while still protecting health and the environment. Authored by the top experts from industry and academia, this volume: Examines how the physical, chemical, and biological characteristics of the subsurface environment, as well as the properties of contaminants, complicate the cleanup task. Reviews the limitations of widely used conventional pump-and-treat cleanup systems, including detailed case studies. Evaluates a range of innovative cleanup technologies and the barriers to their full implementation. Presents specific recommendations for policies and practices in evaluating contamination sites, in choosing remediation technologies, and in setting appropriate cleanup goals.

Spring Meeting

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Publisher :
ISBN 13 :
Total Pages : 544 pages
Book Rating : 4.5/5 (825 download)

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Book Synopsis Spring Meeting by : American Geophysical Union. Meeting

Download or read book Spring Meeting written by American Geophysical Union. Meeting and published by . This book was released on 2000 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Publications, Programs & Services

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ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Publications, Programs & Services by : American Petroleum Institute

Download or read book Publications, Programs & Services written by American Petroleum Institute and published by . This book was released on 1996 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: