Download or read book Water Saturation and Air water Interfacial Area Measurements by Partitioning Gas Tracers in the Vadose Zone and Landfills written by Liqing Li and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil water saturation is a very important parameter in the vadose zone and bioreactor landfills. To measure water saturation over large measurement volumes in both systems, the partitioning gas tracer technique (PGTT) was suggested as a useful tool. In this study, we examined the influence of water saturation, Henry's law constant, injected tracer mass, tracer quantification limit, and local rates of mass transfer between air and water on PGTT measurements. A single-region model was used to describe transport of gas-phase tracers. Laboratory-scale partitioning tracer tests were conducted in four different sand packings. The results from the mathematical modeling and laboratory experiments were used to suggest guidelines for minimizing measurement error in field-scale PGTTs for water saturation measurement. We have further assessed the influence of a number of important parameters on PGTT performance in two-dimensional systems: tracer diffusion coefficients, interstitial gas velocity, spatial variations in temperature, and the degree of domain heterogeneity. The molecular diffusion coefficient of conservative and partitioning tracers has a significant influence of PGTT measurements. Gas velocity was examined as a separate operational parameter in the two-dimensional model simulations. Our simulation results suggest that much higher gas velocities might be used to measure S w in field tests without significant loss of measurement accuracy.
Download or read book Contaminant Hydrogeology written by C. W. Fetter and published by Waveland Press. This book was released on 2017-10-24 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tremendous progress has been made in the field of remediation technologies since the second edition of Contaminant Hydrogeology was published two decades ago, and its content is more important than ever. Recognizing the extensive advancement and research taking place around the world, the authors have embraced and worked from a larger global perspective. Boving and Kreamer incorporate environmental innovation in studying and treating groundwater/soil contamination and the transport of those contaminants while building on Fetter’s original foundational work. Thoroughly updated, expanded, and reorganized, the new edition presents a wealth of new material, including new discussions of emerging and potential contaminant sources and their characteristics like deep well injection, fracking fluids, and in situ leach mining. New sections cover BET and Polanyi adsorption potential theory, vapor transport theory, the introduction of the Capillary and Bond Numbers, the partitioning interwell tracer testing technique for investigating NAPL sites, aerial photographic interpretation, geophysics, immunological surveys, high resolution vertical sampling, flexible liner systems, groundwater tracers, and much more. Contaminant Hydrogeology is intended as a textbook in upper level courses in mass transport and contaminant hydrogeology, and remains a valuable resource for professionals in both the public and private sectors.
Download or read book Handbook of Vadose Zone Characterization Monitoring written by L. Gray Wilson and published by Routledge. This book was released on 2018-05-02 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written in a simple, straightforward manner without complicated mathematical derivatives. Compiled by experienced practitioners, this guide covers topics such as basic principles of vadose zone hydrology and prevalent monitoring techniques. Case studies present actual field experiences for the benefit of the reader. The Handbook provides practitioners with the information they need to fully understand the principles, advantages, and limitations of the monitoring techniques that are available. The Handbook of Vadose Zone Characterization & Monitoring expands and consolidates the useful and succint information contained in various ASTM documents, EPA manuals, and other similar texts on the subject, making it an invaluable aid to new practioners and a useful reference for seasoned veterans in the field.
Download or read book Evaluation of the Utility of Gas Tracers to Quantify Preferential Water Flow in the Vadose Zone written by Indhu Muthukrishnan and published by . This book was released on 2000 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring in the Vadose Zone written by Lorne Graham Wilson and published by . This book was released on 1980 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of partitioning tracers to characterize nonaqueous phase liquid contamination in the vadose zone written by Kambra Miles Allen and published by . This book was released on 1995 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book An investigation of partitioning tracers for characterization of nonaqueous phase liquids in vadose zones written by George Allen Whitley and published by . This book was released on 1997 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SOME OBSERVATIONS ON NOBLE GAS PARTITIONING IN DYNAMIC AIR WATER SYSTEMS written by and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Fluorinated Surfactants and Repellents Second Edition written by Erik Kissa and published by CRC Press. This book was released on 2001-02-09 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of the synthesis, problems, theories and applications of fluorinated surfactants, this second edition is updated with four new chapters on repellency and protection against soiling and staining and over 2900 references, equations, and drawings (800 more than the previous edition). It lists alphabetically and explores numerous applications of fluorinated surfactants. Called "...a most useful introduction to these fascinating materials" by the Journal of Dispersion Science and Technology and "...a coherent and stimulating handbook...the most useful book in the fluorinated surfactants field to date. Recommended." by the Journal of the Chemical Society, Faraday Transactions - this book is a source of factual data, methods of manufacture, and chemical structures for the surfactant scientist and user.
Download or read book DNAPL Site Evaluation written by James W. Mercer and published by CRC-Press. This book was released on 1993-04-29 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNAPL Site Evaluation covers long-term contamination of ground water by DNAPL (dense non-aqueous phase liquids) chemicals. The book develops a framework for planning and implementing DNAPL site characterization activities. It provides detailed methods to identify, characterize, and monitor sites and analyzes their utility, limitations, risks, availability, and cost. Methods to interpret contaminant fate and transport are identified, and new site characterization methods are assessed. DNAPL Site Evaluation will maximize the cost-effectiveness of site investigation/remediation by providing the best information available to describe and evaluate methods to be used for determining the presence, fate, and transport of subsurface DNAPL contamination. The book will be a useful reference for groundwater professionals and environmental regulatory personnel.
Download or read book Environmental Radon written by C.Richard Cothern and published by Springer Science & Business Media. This book was released on 1987-11-30 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is intended for the professional who is a newcomer to the area of environmental radon. It marks the first time that chapters on these subjects have been brought together in a single volume, and it is arranged so that anyone with some basic university-level chemistry and physics can develop a clear understanding of the different aspects involved. The volume is intended to serve as a supplementary textbook in public health, environmental, and health physics courses. It also can be used by the professional to get "up to speed" in this rapidly evolving field. The chapters are not necessarily a discussion of the latest research in this fast-moving field, but are intended to bring the reader to a level at which he can easily understand the current literature. At the back of this volume the reader will find the references for the individual chapters, a general list of reading materials, a glossary, an appendix describing the equations for radioactive decay for a series of progeny, a table of often used conversion factors, and the addresses and brief biographies of the authors and editors. Both historical and SI (International System) units are used throughout the book to provide information for the widest range of readers. Thanks go to Tom Hess for the idea for this volume and to Jessica Barron for help in editing.
Download or read book Unsaturated Zone Hydrology for Scientists and Engineers written by James A. Tindall and published by . This book was released on 1999 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and bief history; Physical properties and characteristics of soils; Behavior of clay-water systems; Potential and thermodynamics of soil water; Chemical properties and principles of soil water; Principles of water flow in soil; Saturated water flow in soil; Unsaturated water flow in soil; Transport of heat and gas in osil and at the surface; Contaminant transport; Effects of infiltration and drainage on soil-water redistribution; Applied soil physics: modeling water, solute, and vapor movement. Drainage in soil water and ground water; Soil remediation techniques; Saptial variability, scaling, and fractals; Appendix 1: Site characterizaton and monitoring devices; Appendix 2: Mathematics review; Appendix 3: tables; References; Index.
Download or read book Gas Transport in Porous Media written by Clifford K. Ho and published by Springer Science & Business Media. This book was released on 2006-10-07 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: CLIFFORD K. HOAND STEPHEN W. WEBB Sandia National Laboratories, P. O. Box 5800, Albuquerque, NM 87185, USA Gas and vapor transport in porous media occur in a number of important applications includingdryingofindustrialandfoodproducts,oilandgasexploration,environm- tal remediation of contaminated sites, and carbon sequestration. Understanding the fundamental mechanisms and processes of gas and vapor transport in porous media allows models to be used to evaluate and optimize the performance and design of these systems. In this book, gas and vapor are distinguished by their available states at stan- ? dard temperature and pressure (20 C, 101 kPa). If the gas-phase constituent can also exist as a liquid phase at standard temperature and pressure (e. g. , water, ethanol, toluene, trichlorothylene), it is considered a vapor. If the gas-phase constituent is non-condensable at standard temperature and pressure (e. g. , oxygen, carbon di- ide, helium, hydrogen, propane), it is considered a gas. The distinction is important because different processes affect the transport and behavior of gases and vapors in porous media. For example, mechanisms specific to vapors include vapor-pressure lowering and enhanced vapor diffusion, which are caused by the presence of a g- phase constituent interacting with its liquid phase in an unsaturated porous media. In addition, the “heat-pipe” exploits isothermal latent heat exchange during evaporation and condensation to effectively transfer heat in designed and natural systems.
Download or read book Practical Design Calculations for Groundwater and Soil Remediation written by Jeff Kuo and published by CRC Press. This book was released on 2014-06-02 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes Illustrative Applications of Practical Design CalculationsWritten in a straightforward style and user-friendly format, Practical Design Calculations for Groundwater and Soil Remediation, Second Edition highlights the essential concepts and important aspects of major design calculations used in soil and groundwater remediation. Drawi
