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Pore Scale Study Of The Dissolution Of Residual Non Aqueous Phase Liquids In Porous Media
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Book Synopsis Pore Scale Study of the Dissolution of Residual Non-aqueous Phase Liquids in Porous Media by : Nahla Adnan Sahloul
Download or read book Pore Scale Study of the Dissolution of Residual Non-aqueous Phase Liquids in Porous Media written by Nahla Adnan Sahloul and published by . This book was released on 2000 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study of Transport and Dissolution of a Nonaqueous Phase Liquid in Porous Media by : Mirrya Mosier Fontenot
Download or read book Study of Transport and Dissolution of a Nonaqueous Phase Liquid in Porous Media written by Mirrya Mosier Fontenot and published by . This book was released on 2001 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transport and dissolution of residual non-aqueous phase liquids (NAPLS) trapped in water saturated porous media is a problem pertinent to both environmental and petrochemical industries. In this work we have quantitatively examined the complete dissolution of residual entrapped NAPL at the pore-scale in three dimensions using refractive index matching techniques along with planar laser induced fluorescence. The results yielded pore-scale information regarding ganglia volume, surface area, and position over time at various Capillary numbers. We found that with increasing Capillary numbers, the time for total dissolution decreased. In addition, it appears that large ganglia exhibit fractal area to volume scaling. We were also able to examine the distributions of the ganglia in the direction of flow over time. The use of low-frequency flow pulsations as a removal technique was also examined. A two dimensional micro model was used for these studies. We found that for this system, lower frequencies and higher amplitudes were more effective in NAPL removal due to breakup and mobilization. We also examined the effect of increasing amplitude and continuous versus pulsed stimulation. In addition, mass transport in the presence of a surfactant was also enhanced due to flow pulsation with lower frequencies and higher amplitudes again being most effective.
Book Synopsis Dissolution of Non-aqueous Phase Organic Liquids in Porous Media by : Jil Talkovsky Geller
Download or read book Dissolution of Non-aqueous Phase Organic Liquids in Porous Media written by Jil Talkovsky Geller and published by . This book was released on 1990 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of NAPL Dissolution and Instability Using a Pore-scale Network Model by : Yanhui Hu
Download or read book Investigation of NAPL Dissolution and Instability Using a Pore-scale Network Model written by Yanhui Hu and published by . This book was released on 2002 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonaqueous phase liquids (NAPLs) introduced into an aquifer can cause long-term contamination. While some of the NAPL may be recoverable, most will dissolve into the surrounding water over a period of years or centuries. A three-dimensional pore-scale network model was developed to investigate the NAPL dissolution process in porous media. The model explicitly investigated two dissolution mechanisms: stagnant layer diffusion and channel flow dissolution. Numerical experiments were conducted to determine the effects of ganglion size, aqueous phase flow rate, and porous medium characteristics on the NAPL dissolution rate, ganglion configuration, and ganglion instability, both initial and dissolution-induced. It was found that flow rate has a strong effect on the dissolution rate, while porous medium characteristics are more important for ganglion instability. Single ganglion results were translated into a column study using population analysis, and the resulting relationships between modified Sherwood number, Reynolds number, and Peclet number agreed well with published results. A six-factor full factorial numerical experiment was conducted to systematically investigate the effects of pore mean size, pore size standard deviation, aspect ratio, correlation length, ganglion size and Capillary number. Aspect ratio was found to be the single most important factor in determining the ganglion instability types, with snap-off dominating at high aspect ratios. Further investigation indicated that the effect of aspect ratio is conditioned on the values of other porous medium characteristics, such as the pore size standard deviation and correlation length.
Book Synopsis Dissolution of Non-aqueous Phase Liquid Pools in Saturated Porous Media by : Michael P. Whelan
Download or read book Dissolution of Non-aqueous Phase Liquid Pools in Saturated Porous Media written by Michael P. Whelan and published by . This book was released on 1992 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissolution of Nonaqueous Phase Liquids in Saturated Subsurface Systems by : Susan E. Powers
Download or read book Dissolution of Nonaqueous Phase Liquids in Saturated Subsurface Systems written by Susan E. Powers and published by . This book was released on 1992 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil and Aquifer Pollution by : Hillel Rubin
Download or read book Soil and Aquifer Pollution written by Hillel Rubin and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Water Research Institute at the Technion (Israel Institute of Technology) is proud to have initiated and sponsored the International Workshop "Soil and Aquifer Pollution: Non-Aqueous Phase Liquids - Contamination and Recla- tion", held May 13th-15th, 1996, on the Technion campus in Haifa. Groundwater contamination is one of the pressing issues facing Israel and other countries which depend on groundwater for water supply. In Israel, 60% of the water supply comes from groundwater, most of it from two large aquifers. The Coastal Aquifer underlies the area where the largest concentration of human activity already takes place, and where much of future development is expected to occur. It is a phreatic sandstone aquifer, vulnerable to pollution from activities at the surface. The Mountain Aquifer is recharged in the higher terrain to the east, and flows, first in a phreatic zone, then confined, westward and underneath the Coastal Aquifer. This limestone aquifer has higher permeabilities and flow velo- ties, so pollution can reach the groundwater quite readily. Smaller local aquifers are also important components in the national water system. While measures are taken to protect these aquifers from pollution, there are locations where contamination has already occurred. Furthermore, accidental pollution may not be totally avoided in the future. Therefore, understanding the processes of groundwater contamination, recommending the proper measures for preventing it, and determining the best means for reclamation once pollution has occurred, are of great practical importance. Non-aqueous phase liquids (NAPLs) are among the most significant contaminants.
Book Synopsis The Dissolution and Transport of Dense Non-aqueous Phase Liquids in Saturated Porous Media by : Michael Robert Anderson
Download or read book The Dissolution and Transport of Dense Non-aqueous Phase Liquids in Saturated Porous Media written by Michael Robert Anderson and published by . This book was released on 1988 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Colloidal Transport in Porous Media by : Fritz H. Frimmel
Download or read book Colloidal Transport in Porous Media written by Fritz H. Frimmel and published by Springer Science & Business Media. This book was released on 2007-05-26 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the basics of abiotic colloid characterization, of biocolloids and biofilms, the resulting transport phenomena and their engineering aspects. The contributors comprise an international group of leading specialists devoted to colloidal sciences. The contributions include theoretical considerations, results from model experiments, and field studies. The information provided here will benefit students and scientists interested in the analytical, chemical, microbiological, geological and hydrological aspects of material transport in aquatic systems and soils.
Book Synopsis Characterization of Non-aqueous Phase Liquid Dissolution in Porous Media Using Nuclear Magnetic Resonance Imaging by : Alicia Renee Aragon
Download or read book Characterization of Non-aqueous Phase Liquid Dissolution in Porous Media Using Nuclear Magnetic Resonance Imaging written by Alicia Renee Aragon and published by . This book was released on 2000 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Form and Distribution of Residual Nonaqueous Phase Liquids in Porous Media by : Trent Alan Bolling
Download or read book Form and Distribution of Residual Nonaqueous Phase Liquids in Porous Media written by Trent Alan Bolling and published by . This book was released on 1994 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analysis of Pore Scale Nonaqueous Phase Liquid Dissolution in Etched Silicon Pore Network by : Cheema Chomsurin
Download or read book Analysis of Pore Scale Nonaqueous Phase Liquid Dissolution in Etched Silicon Pore Network written by Cheema Chomsurin and published by . This book was released on 2003 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dense Nonaqueous Phase Liquids written by and published by . This book was released on 1992 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methods of Soil Analysis, Part 4 by : Jacob H. Dane
Download or read book Methods of Soil Analysis, Part 4 written by Jacob H. Dane and published by John Wiley & Sons. This book was released on 2020-05-27 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt: The best single reference for both the theory and practice of soil physical measurements, Methods, Part 4 adopts a more hierarchical approach to allow readers to easily find their specific topic or measurement of interest. As such it is divided into eight main chapters on soil sampling and statistics, the solid, solution, and gas phases, soil heat, solute transport, multi-fluid flow, and erosion. More than 100 world experts contribute detailed sections.
Book Synopsis Relative Permeability Changes Associated with the Dissolution of Non-aqueous Phase Liquids in Porous Media by :
Download or read book Relative Permeability Changes Associated with the Dissolution of Non-aqueous Phase Liquids in Porous Media written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissolution of Nonaqueous Phase Liquids in Porous Media by : Thomas Scott Soerens
Download or read book Dissolution of Nonaqueous Phase Liquids in Porous Media written by Thomas Scott Soerens and published by . This book was released on 1995 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
