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Author : John J. Noyes
Publisher :
ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.:/5 (568 download)
Download or read book Electrokinetically Enhanced Dense Non-aqueous Phase Liquid (DNAPL) Removal written by John J. Noyes and published by . This book was released on 1999 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (713 download)
Download or read book Surfactant-Enhanced DNAPL Removal written by and published by . This book was released on 2001 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the limitations of conventional groundwater remediation technologies, innovative methods have been sought to enhance the removal of recalcitrant compounds such as trichloroethylene (TCE) and tetrachloroethylene (PCE), which are frequently trapped in the subsurface as dense nonaqueous phase liquids (DNAPLs). Surfactant-Enhanced Aquifer Remediation (SEAR) is one such method, which has been adapted from enhanced oil recovery techniques used by the petroleum industry. It involves sweeping a surfactant solution across the DNAPL-contaminated portion of the aquifer. The surfactants accomplish rapid removal of the DNAPL contaminant by greatly increasing its effective aqueous solubility and by reducing the interfacial tension between the DNAPL and water phases. In field demonstrations conducted to date, up to 99% removal efficiencies have been achieved with just three pore volumes of surfactant followed by water flooding. In a typical remediation scheme, surfactants are used to remediate DNAPL source areas and complement the use of other technologies, such as conventional pump- and -treat systems, for removing the dissolved-phase plumes that are associated with DNAPL source areas. Currently, simple options for remediating DNAPL source areas are limited. Residual DNAPL in an aquifer acts as a continual source of contamination to the groundwater, and site closure cannot be achieved unless the source is removed. This surfactant-based technology will be more cost-effective than conventional pump-and-treat systems and will provide for a more rapid site cleanup.
Author : Andrew Bjorn
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Enhanced Removal of Residual DNAPL with Hot Water Injection written by Andrew Bjorn and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental cell and remediation system were designed to analyze hot water flushing of residual dense nonaqueous phase liquids (DNAPLs). Experiments were performed to calibrate the hydraulic and thermal properties of the system within a computer model. Simulations were conducted to evaluate preferential flow through thermal plumes and to assess the effects of increased temperatures on DNAPL dissolution. The intrinsic permeability of the system was calibrated, with ' R'2 values ranging from 0.783 to 0.995. The thermal model was not sensitive enough to the heat capacity and heat loss coefficient values to allow model errors to be consistently minimized for the two sample times examined. Simulations demonstrated that preferential flow within a heat plume would not be significant over long periods of time. Improved recovery was achieved in variable temperature simulations of residual tetrachloroethylene (PCE) dissolution, but significant increases in recovery may only be realized in mass transfer rate limited systems.
Download or read book Dense Non-aqueous Phase Liquids (DNAPLs) written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309065496
Total Pages : 301 pages
Book Rating : 4.3/5 (9 download)
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.
Author : Lakshmi N. Reddi
Publisher :
ISBN 13 :
Total Pages : 880 pages
Book Rating : 4.3/5 (91 download)
Download or read book Non-aqueous Phase Liquids (NAPLs) in Subsurface Environment written by Lakshmi N. Reddi and published by . This book was released on 1996 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains 68 papers on contamination by nonaqueous phase liquids (NAPLs) presented at a specialty conference at the ASCE National Convention, held in Washington, D.C., November 10-14, 1996.
Author : Alexandra B. Ribeiro
Publisher : John Wiley & Sons
ISBN 13 : 1119670179
Total Pages : 720 pages
Book Rating : 4.1/5 (196 download)
Download or read book Electrokinetic Remediation for Environmental Security and Sustainability written by Alexandra B. Ribeiro and published by John Wiley & Sons. This book was released on 2021-03-05 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrokinetic Remediation for Environmental Security and Sustainability Explore this comprehensive reference on the remediation of contaminated substrates, filled with cutting-edge research and practical case studies Electrokinetic Remediation for Environmental Security and Sustainability delivers a thorough review of electrokinetic remediation (EKR) for the treatment of inorganic and organic contaminants in contaminated substrates. The book highlights recent progress and developments in EKR in the areas of resource recovery, the removal of pollutants, and environmental remediation. It also discusses the use of EKR in conjunction with nanotechnology and phytoremediation. Throughout the book, case studies are presented that involve the field implementation of EKR technologies. The book also includes discussions of enhanced electrokinetic remediation of dredged co-contaminated sediments, solar-powered bioelectrokinetics for the mitigation of contaminated agricultural soil, advanced electro-fenton for remediation of organics, electrokinetic remediation for PPCPs in contaminated substrates, and the electrokinetic remediation of agrochemicals such as organochlorine compounds. Other topics include: A thorough introduction to the modelling of electrokinetic remediation An exploration of the electrokinetic recovery of tungsten and removal of arsenic from mining secondary resources An analysis of pharmaceutically active compounds in wastewater treatment plants with a discussion of electrochemical advanced oxidation as an on-site treatment A review of rare earth elements, including general concepts and recovery techniques, like electrodialytic extraction A treatment of hydrocarbon-contaminated soil in cold climate conditions Perfect for environmental engineers and scientists, geologists, chemical engineers, biochemical engineers, and scientists working with green technology, Electrokinetic Remediation for Environmental Security and Sustainability will also earn a place in the libraries of academic and industry researchers, engineers, regulators, and policy makers with an interest in the remediation of contaminated natural resources.
Author : Eric John Suchomel
Publisher :
ISBN 13 : 9781109871562
Total Pages : 329 pages
Book Rating : 4.8/5 (715 download)
Download or read book Partial Mass Recovery from DNAPL Source Zones: Contaminant Mass Flux Reductions and Reductive Dechlorination of Residual DNAPL. written by Eric John Suchomel and published by . This book was released on 2006 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this research was to further the understanding of the consequences of partial mass recovery from DNAPL source zones. Particular attention was paid to impact of surfactant-based remediation strategies on post-treatment effluent contaminant concentrations and mass flux as well as the applicability of microbial reductive dechlorination as an efficient polishing mechanism for residual DNAPL present in source zones following aggressive physicochemical treatment. Two dimensional (2-D) experimental results indicated that, for some DNAPL compounds (e.g., TCE), recovery by surfactant-enhanced solubilization using the surfactant Tween 80 is comparable to that observed with low interfacial tension (IFT) solutions designed to mobilize the DNAPL. Hence, Tween 80 (or similar surfactants) should be considered for remediation of TCE source zones, particularly if combined with bioremediation of residual contamination.
Author : A.M.O. Mohamed
Publisher : Elsevier
ISBN 13 : 0080532446
Total Pages : 731 pages
Book Rating : 4.0/5 (85 download)
Download or read book Geoenvironmental Engineering written by A.M.O. Mohamed and published by Elsevier. This book was released on 1998-04-21 with total page 731 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new social and economic era calls for integration of ecology and economy in a system of cause and effect. The central element in this shift is sustainable development. Fundamental to the achievement of sustainable development is the requirement for environmentally responsible waste management and restoration of the environment. Solutions to the complex problems confronted by waste management and environmental restoration industry are currently handled by the geoenvironmental engineering profession that needs a good background in soil biology, chemistry, mechanics, mineralogy, and physics. In recognition of this need, this book summarizes relevant aspects of various soil physics, mineralogy, and chemistry as well as the chemistry of pollutants. This treatment will provide sufficient background to students and practicing engineers to enable them to think about how to approach waste management and environmental restoration problems.
Author : Scott Marshall Payne
Publisher : CRC Press
ISBN 13 : 1000157598
Total Pages : 452 pages
Book Rating : 4.0/5 (1 download)
Download or read book Strategies for Accelerating Cleanup at Toxic Waste Sites written by Scott Marshall Payne and published by CRC Press. This book was released on 2020-07-26 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerating Cleanup at Toxic Waste Sites: Fast-tracking Environmental Actions and Decision Making presents truly innovative advances in investigative and cleanup technologies, offering valuable solutions that streamline the data collection process, speed up the time it takes to characterize a site, and expedite decision making. Using easy to understand graphic displays, tables, text summaries, and real world case studies, and by synthesizing technical and regulatory reference information crucial to the development of effective cleanup strategies, this book provides the framework for environmental professionals to develop project and program approaches that meet today's needs. An advanced text for those with at least basic understanding of environmental investigation, cleanup, regulations, decision making, and policy development, Accelerating Cleanup at Toxic Waste Sites addresses the "human" side of the environmental industry and why it is perhaps one of the most important considerations for successful accelerated cleanup. This book takes the next step by providing managers, project teams, and other professionals with approaches that bring techniques, regulations, strategies, and people together into one comprehensive package that works.
Author : Ravi Naidu
Publisher : CRC Press
ISBN 13 : 1482224488
Total Pages : 333 pages
Book Rating : 4.4/5 (822 download)
Download or read book Permeable Reactive Barrier written by Ravi Naidu and published by CRC Press. This book was released on 2018-10-08 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Remediation of groundwater is complex and often challenging. But the cost of pump and treat technology, coupled with the dismal results achieved, has paved the way for newer, better technologies to be developed. Among these techniques is permeable reactive barrier (PRB) technology, which allows groundwater to pass through a buried porous barrier that either captures the contaminants or breaks them down. And although this approach is gaining popularity, there are few references available on the subject. Until now. Permeable Reactive Barrier: Sustainable Groundwater Remediation brings together the information required to plan, design/model, and apply a successful, cost-effective, and sustainable PRB technology. With contributions from pioneers in this area, the book covers state-of-the-art information on PRB technology. It details design criteria, predictive modeling, and application to contaminants beyond petroleum hydrocarbons, including inorganics and radionuclides. The text also examines implementation stages such as the initial feasibility assessment, laboratory treatability studies (including column studies), estimation of PRB design parameters, and development of a long-term monitoring network for the performance evaluation of the barrier. It also outlines the predictive tools required for life cycle analysis and cost/performance assessment. A review of current PRB technology and its applications, this book includes case studies that exemplify the concepts discussed. It helps you determine when to recommend PRB, what information is needed from the site investigation to design it, and what regulatory validation is required.
![Download Natural Remobilization of a Multicomponent Dense Non-aqueous Phase Liquid (DNAPL) Pool [microform] PDF Online Free](https://books.google.com/books/content/images/frontcover/oD-XwgEACAAJ?fife=w200-h370)
Author : James William Roy
Publisher : Library and Archives Canada = Bibliothèque et Archives Canada
ISBN 13 : 9780612945913
Total Pages : 246 pages
Book Rating : 4.9/5 (459 download)
Download or read book Natural Remobilization of a Multicomponent Dense Non-aqueous Phase Liquid (DNAPL) Pool [microform] written by James William Roy and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2004 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (684 download)
Download or read book Final Report for Demonstration of in Situ Oxidation of DNAPL Using the Geo-Cleanse Technology written by and published by . This book was released on 1997 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: At large industrial sites like the A/M Area of the Savannah River Site (SRS), undissolved dense non-aqueous phase liquid (DNAPL) in soil and groundwater is the most significant barrier to successful clean up. DNAPL acts as a reservoir that will continue to generate contaminant levels far above remediation concentration goals well into the future.
Author : Mark L. Brusseau
Publisher :
ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.3/5 (91 download)
Download or read book Innovative Subsurface Remediation written by Mark L. Brusseau and published by . This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume evaluates a selection of new technologies for the remediation of groundwater pollution. It covers techniques for both site remediation and characterization, and many of the techniques described are ready for commercial application.
Author : Katalin Gruiz
Publisher : CRC Press
ISBN 13 : 1317697413
Total Pages : 562 pages
Book Rating : 4.3/5 (176 download)
Download or read book Engineering Tools for Environmental Risk Management written by Katalin Gruiz and published by CRC Press. This book was released on 2019-01-08 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: The four volumes of the book series "Engineering Tools for Environmental Risk Management" deal with environmental management, assessment & monitoring tools, environmental toxicology and risk reduction technologies. This last volume focuses on engineering solutions usually needed for industrial contaminated sites, where nature’s self-remediation is inefficient or too slow. The success of remediation depends on the selection of an increasing number of conventional and innovative methods. This volume classifies the remedial technologies and describes the reactor approach to understand and manage in situ technologies similarly to reactor-based technologies. Technology types include physicochemical, biological or ecological solutions, where near-natural, sustainable remediation has priority. A special chapter is devoted to natural attenuation, where natural changes can help achieve clean-up objectives. Natural attenuation and biological and ecological remediation establish a serial range of technologies from monitoring only to fully controlled interventions, using ‘ just’ the natural ecosystem or sophisticated artificial living systems. Passive artificial ecosystems and biodegradation-based remediation – in addition to natural attenuation – demonstrate the use of these ‘green’ technologies and how engineering intervention should be kept at a minimum to limit damage to the environment and create a harmonious ecosystem. Remediation of sites contaminated with organic substances is analyzed in detail including biological and physicochemical methods. Comprehensive management of pollution by inorganic contaminants from the mining industry, leaching and bioleaching and acid mine drainage is studied in general and specifically in the case of an abandoned mine in Hungary where the innovative technology of combined chemical and phytostabilization has been applied. The series of technologies is completed by electrochemical remediation and nanotechnologies. Monitoring, verification and sustainability analysis of remediation provide a comprehensive overview of the management aspect of environmental risk reduction by remediation. This book series focuses on the state of knowledge about the environment and its conscious and structured application in environmental engineering, management and decision making.
Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development
Publisher :
ISBN 13 :
Total Pages : 2584 pages
Book Rating : 4.3/5 (121 download)
Download or read book Energy and Water Development Appropriations for 1995: Department of Energy fiscal year 1995 budget justifications written by United States. Congress. House. Committee on Appropriations. Subcommittee on Energy and Water Development and published by . This book was released on 1994 with total page 2584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 265 pages
Book Rating : 4.:/5 (742 download)
Download or read book Chemical Oxidation of a DNAPL Source Zone at Launch Complex 34 in Cape Canaveral Air Station written by and published by . This book was released on 2001 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dense, nonaqueous-phase liquid contaminants are a challenge to characterize and remediate at many sites where such contaminants have entered the aquifer due to past use of disposal practices. Chlorinated solvents are common DNPL contaminates at sites where operations, such as aircraft maintenance, dry cleaning, and metal finishing have historically occurred. In the past, because of the difficulty in identifying the DNAPL source zone, most remediation efforts focused on controlling the migration of the dissolved chlorinated volatile organic compounds plume. Recently, many sites owners have had success in locating DNAPL sources. DNAPL source remediation is beneficial because once the source has been significantly mitigated; the strength and duration of the resulting plume can potentially be lowered. The goal of the project is to evaluate the technical and cost performance of ISCO technology for remediation of DNAPL source zones. This innovative technology is based on the ability of strong oxidants to react with and destroy several types of DNAPL contaminants. Treatment of chlorinated volatile organic compounds with oxidants has been used historically for drinking water and wastewater treatment, but the in situ use of these oxidants for DNAPL source treatment is relatively new. The ISCO demonstration is part of a larger demonstration of three different DNAPL remediation technologies being conducted.
