Download or read book Surfactant enhanced Subsurface Remediation written by and published by . This book was released on 1995 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surfactant enhanced DNAPL Remediation written by David A. Sabatini and published by . This book was released on 1996 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surfactant Enhanced Subsurface Remediation Emerging Technologies Developed from a symposium presented at the 207th National Meeting of the American Chemical Society ACS San Diego CA March 13 17 1994 written by Sabatini DA Ed and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surfactant Enhancements written by and published by . This book was released on 1995 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surfactant enhanced Subsurface Remediation written by David A. Sabatini and published by . This book was released on 1995 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a timely and thorough review of surfactant-based remediation technologies. Covers fundamental mechanistic studies to scale-up and process modeling and full-scale field implementation studies. Summarizes the technical, economic, and sociopolitical issues affecting widespread implementation of these technologies. Includes contributions from academic and industrial researchers as well as regulatory personnel.

Download or read book Surfactant enhanced Remediation of Tce Contaminated Subsurface written by Kolawole W. Ladipo and published by . This book was released on 1997 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surfactants and Cosolvents for NAPL Remediation A Technology Practices Manual written by Donald F. Lowe and published by CRC Press. This book was released on 1999-03-26 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: A $19.3 million Department of Defense grant to Rice University funds the Advanced Applied Technology Demonstration Facility (AATDF). One of the project goals is the development of reduction strategies for nonaqueous phase liquids (NAPLs) in the subsurface. Surfactants and Cosolvents for NAPL Remediation records the results of AATDF research. The manual is a guide to the practical application of surfactants/cosolvent for in situ remediation. It is targeted to decision makers and anyone concerned with the design or implementation of these technologies. The book discusses the situational viability of surfactants/cosolvents , the possible results, design, and operation. It includes case studies, step-by-step guidance, and project cost work sheets. The successful results of the AATDF research, as documented Surfactants and Cosolvents for NAPL Remediation, are an invaluable contribution to the future of subsurface remediation. Without source NAPL reduction, the alternative is decades of plume management through pump-and-treat.

Download or read book Surfactant Enhanced Remediation of Subsurface Chromium Contamination written by Bhakthavatsalam Thirumalainivas and published by . This book was released on 1994 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physicochemical Groundwater Remediation written by James A. Smith and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: As we transition into the 21st century, it is apparent that this is an exciting time for environmental engineers and scientists studying remediation technologies. There has been a rapid development of new ways to clean-up polluted groundwater. Research activities of the past and next 10 years will have a dramatic impact on the quality of the subsurface environment for the next century. In 20, or even 10 years from now, our approach to subsurface remediation will probably be vastly different than it is today. Many of the emerging technologies presented in this book will form the basis of standard remediation practices of the future. Physicochemical Groundwater Remediation presents detailed information on multiple emerging technologies for the remediation of the contaminated subsurface environment. All of these technologies apply our knowledge of physical and chemical processes to clean up ground water and the unsaturated zone, and many (if not all) of these emerging technologies will help define standard practices in the future. These technologies include in situ sorptive and reactive treatment walls, surfactant-enhanced aquifer remediation, optimization analyses for remediation system design, chemical, electrochemical, and biochemical remediation processes, and monitored natural attenuation. You will learn how palladium catalyzes the dehalogenation of chlorinated solvents. You will find out how barometric pumping can naturally remove significant quantities of volatile organic pollutants from shallow ground water and the unsaturated zone. You can learn about mobilizing non-aqueous phase liquids (NAPLs) without risking significant downward migration of the NAPL. You can find out how processes such as electroosmosis and electromigration can be exploited for groundwater remediation purposes and how zero-valent iron and zeolite treatment walls can be used in situ to treat and control contaminant plume migration. Contributors to this book are experts in groundwater remediation processes, and they represent industry, consulting, academia, and government. If your work involves the clean up of contaminated soil and groundwater, this book is an essential reference to keep you up to date on the most promising new developments in remediation research.

Download or read book Formulation of Petroleum Microemulsion Systems for Surfactant enhanced In situ Subsurface Remediation written by Bin Wu and published by . This book was released on 1996 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Feasibility of Edible Surfactants for Surfactant enhanced In situ Remediation of Subsurface Contaminated with Tetrachloroethylene PCE written by Anil Kumar Gupta and published by . This book was released on 1993 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrokinetic surfactant enhanced Remediation of Hydrophobic Organic Pollutants in Low Permeability Subsurface Environments written by Seok-Oh Ko and published by . This book was released on 1998 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transport and Remediation of Subsurface Contaminants written by David A. Sabatini and published by . This book was released on 1992 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport and remediation of subsurface contaminants: introduction; Colloid deposition in porous media and an evaluation of bed-media cleaning techniques; Deposition of colloids in porous media: theory and numerical solution; Surface-charge repulsive effects on the mobility of inorganic colloids in subsurface systems; Colloid transport and the gas-water interface in porous media; Colloid remediation in groundwater by polyelectrolyte; Removal of chromate from aqueous strems by ultrafiltration and precipitation; Potential for bacterial remediation of waste sites containing selenium or lead; Heap leaching as a solvent-extraction technique for remediation of metals-contaminated soils; Factors affecting surfactant performance in groundwater remediation applicationsInfluence of surfactant sorption on capillary pressure-saturation relationships; Surfactant-enchanced solubilization of tetrachloroethylene and degradation products in pump and treat remediation; Solubilization and biodegradation of Hydrophobic organic compounds in soil-aqueous systems with nonionic surfactants; sorption of hydrophobic organic compounds and nonionic surfactants with subsurface materials; Field tests of surfactant flooding: mobility control of dense nonaqueous-phase liquids; Landfill leachate effects on transport of organic substances in aquifer materials; Clay and immiscible organic liquids: greater capillary trapping of the organic phase; Exposure assessmnet modeling for hydrocarbon spills into the subsurface: sensitivity to soil properties.

Download or read book Surfactant enhanced aquifer remediation at neutral buoyancy written by Konstantinos Kostarelos and published by . This book was released on 1998 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The two most important outstanding issues regarding surfactant enhanced aquifer remediation of DNAPL [Dense Nonaqueous Phase Liquids] sites are the risk of downward migration of the DNAPL to lower, uncontaminated groundwater or underlying clean aquifers and the impact of aquifer heterogeneity. The first of these problems has been addressed and solved by this research. The main objective was to prevent vertical migration of microemulsion (and thus dense contaminants) when using surfactant solutions to recover DNAPLs from the subsurface and still remove essentially all of the DNAPL with a reasonable amount of surfactant. When surfactant solution solubilizes DNAPL, the resulting microemulsion is denser than the surrounding fluid and thus tends to migrate downward. Unless a good capillary barrier exists below the DNAPL, vertical migration can cause contamination of clean groundwater below the DNAPL and should be avoided. Since many sites do not have a known lower confining layer with certainty, this problem needed to be addressed so that surfactant enhanced aquifer remediation could be more widely used and used with acceptable risk and effectiveness. The DNAPLs used in these experiments were trichloroethylene and perchloroethylene. and the surfactant was sodium dihexyl sulfosuccinate. Isopropanol was used in the surfactant solution to lower the density of the microemulsion that formed when the DNAPL was solubilized and has other benefits as well. This approach, termed neutral buoyancy, was used to prevent vertical migration. To test the concept, several major steps were taken. First, a suitable surfactant exhibiting classical Winsor phase behavior was selected. Density measurements were made of the microemulsions formed when the surfactant solution solubilized DNAPL, using various alcohols in the solution. Next, column experiments were done to ensure that the surfactant solution exhibited good behavior when used to recover the DNAPL from a sandpack. Finally, a model aquifer was constructed. and experiments designed and performed. Three tank experiments were made to demonstrate the neutral buoyancy concept. The first experiment was designed so that the microemulsion would exhibit a small degree of vertical migration but would still be recovered by the extraction well of the model. The second experiment was designed with a large degree of vertical migration that would render the microemulsion unrecoverable before it reached the bottom of the tank. The third tank experiment used a neutrally buoyant design to demonstrate that DNAPL can be removed from a coarse sand layer on top of a clean fine sand layer that would not be an adequate barrier for downward migration of microemulsion (and thus contaminant) if it were not neutrally buoyant. The main contribution of this research work was solving the problem of vertical migration of microemulsion so that surfactant solutions could be used at field sites that are not underlain by a capillary barrier. The neutral buoyancy concept was developed and was verified in these experiments"--Leaves v-vii.

Download or read book Surfactant Enhanced Remediation of Residual Organic Contaminants written by Barbara Krebs-Yuill and published by . This book was released on 1995 with total page 208 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 Streamline Simulation of Surfactant Enhanced Aquifer Remediation written by Douglas Irvin Tunison and published by . This book was released on 1996-12-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonaqueous Phase Liquids (NAPLs) are a recognized source of groundwater contamination. Surfactant Enhanced Aquifer Remediation (SEAR) shows promise in increasing the efficiency and effectiveness over traditional 'pump and treat' NAPL remediation processes. Laboratory results are not always consistent with the effects observed in field applications because of the complex interactions that occur in the subsurface. Mathematical modeling is required to enable accurate prediction and understanding of SEAR.