Transport And Sorption Of Volatile Organic Compounds And Water Vapor In Porous Media
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Transport And Sorption Of Volatile Organic Compounds And Water Vapor In Porous Media
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Author :
language : en
Publisher:
Release Date : 1995
Transport And Sorption Of Volatile Organic Compounds And Water Vapor In Porous Media written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
Transport And Sorption Of Volatile Organic Compounds And Water Vapor In Porous Media
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Author : Tsair-Fuh Lin
language : en
Publisher:
Release Date : 1995
Transport And Sorption Of Volatile Organic Compounds And Water Vapor In Porous Media written by Tsair-Fuh Lin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Volatile organic compounds categories.
Diffusion In Natural Porous Media
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Author : Peter Grathwohl
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Diffusion In Natural Porous Media written by Peter Grathwohl and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics introduces the general principles of diffusion in the subsurface environment and discusses the implications for the fate and transport of contaminants in soils and groundwater. Emphasis is placed on sorption/desorption and the dissolution kinetics of organic contaminants, both of which are limited by the slow speed of molecular diffusion. Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics compiles methods for calculating the diffusion coefficients of organic compounds (in aqueous solution or vapor phase) in natural porous media. The author uses analytical solutions of Fick's 2nd law and some simple numerical models to model diffusive transport under various initial and boundary conditions. A number of these models may be solved using spreadsheets. The book examines sorption/desorption rates of organic compounds in various soils and aquifer materials, and also examines the dissolution kinetics of nonaqueous phase liquids in aquifers, in both the trapped residual phase and in pools. Diffusion in Natural Porous Media: Contaminant Transport, Sorption/Desorption and Dissolution Kinetics concludes with a discussion of the impact of slow diffusion processes on soil and groundwater decontamination and the implications of these processes for groundwater risk assessment.
Transport Of Dissolved Volatile Organic Compounds In The Unsaturated Zone
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Author : Munjed A. Maraqa
language : en
Publisher:
Release Date : 1995
Transport Of Dissolved Volatile Organic Compounds In The Unsaturated Zone written by Munjed A. Maraqa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Organic compounds categories.
Vapor Phase Transport Of Volatile Organic Compounds Through Porous Media
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Author : Mark Andrew Lumpkin
language : en
Publisher:
Release Date : 1994
Vapor Phase Transport Of Volatile Organic Compounds Through Porous Media written by Mark Andrew Lumpkin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Sanitary landfills categories.
Gas Transport In Porous Media
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Author : Clifford K. Ho
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-10-07
Gas Transport In Porous Media written by Clifford K. Ho and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-10-07 with Science categories.
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.
Coupled Processes Diffusive Transport And Biodegradation Of Volatile Organic Compounds In Unsaturated Porous Media
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Author :
language : en
Publisher:
Release Date : 1998
Coupled Processes Diffusive Transport And Biodegradation Of Volatile Organic Compounds In Unsaturated Porous Media written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Diffusive transport of volatile organic compounds (VOCs) and their degradation by bacteria in unsaturated soils are coupled by poorly understood mass transfer kinetics at the gas/water interface. The capability to predict the fate of VOCs in m saturated soil is necessary to evaluate the feasibility of natural attenuation as a VOC remediation strategy. The objective of this study was to develop a mechanistically based mathematical model that considered the interdependence of VOC diffusive transport, mass transfer at the gas/water interface, microbial activity, and sorptive interactions in a moist, unsaturated soil. Because the focus of the model was on description of natural attenuation, the advective VOC transport that is induced in engineered remediation processes such as vapor extraction was not considered. The utility of the model was assessed through its ability to describe experimental observations from well-defined experiments in which toluene was used as a representative VOC and diffused through soil columns that contained a toluene degrading bacterium, Pseudomonasputida. The coefficient for gas-liquid mass-transfer, KLa, was found to be a key parameter controlling the ability of bacteria to degrade VOCs. This finding indicates that soil size and geometry are likely to be dominant parameters in assessing the possible success of natural attenuation of VOCs in contaminated unsaturated soils.
Multicomponent Gas Phase Transport Of Volatile Organic Chemicals In Soils
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Author : Said Amali
language : en
Publisher:
Release Date : 1994
Multicomponent Gas Phase Transport Of Volatile Organic Chemicals In Soils written by Said Amali and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with categories.
Transport Processes In Porous Media
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Author : Jacob Bear
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Transport Processes In Porous Media written by Jacob Bear and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This volume contains the invited lectures presented during the NATO/ASI conducted in Pullman, Washington, July 9-18, 1989. This is the third in a series of NATO/ASIs on transport phenomena in porous media. The first two, which took place at Newark, Delaware in 1982 and 1985, are devoted to various topics related to the Fundamentals of Transport Processes in Porous Media. The contents of the books resulting from previous NATO/ASIs are given at the end of this book. Transport of extensive quantities such as mass of a fluid phase, mass of chemical species carried by a fluid phase, energy and electric charge in porous media, as encountered in a large variety of engineering disciplines, is an emerging interdisciplinary field. The groundwater flow, the simultaneous flow of gas, oil and water in petroleum reservoirs, the movement and accumulation of pollutants in the saturated and unsaturated subsurface zones, thermal energy storage in reservoirs, land subsidence in response to charges in overburden loads, or to pumping of fluids from underground formations, wave propagation in seismic investigations or as produced by earthquakes, chemical reactors, water flow through sand filters and the movement of fluids through kidneys, may serve as examples of fields in which the theory of transport in porous media is employed.
Competitive Sorption And Desorption Of Vapor Phase Volatile Organic Compounds In Unsaturated Aquifer Sand Under Conditions Of Advective Flow
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Author : Brent Alan Alspach
language : en
Publisher:
Release Date : 1997
Competitive Sorption And Desorption Of Vapor Phase Volatile Organic Compounds In Unsaturated Aquifer Sand Under Conditions Of Advective Flow written by Brent Alan Alspach and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.