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Author : Nadja Ray
Publisher :
ISBN 13 : 9783844020434
Total Pages : 185 pages
Book Rating : 4.0/5 (24 download)
Download or read book Colloidal Transport in Porous Media - Modeling and Analysis written by Nadja Ray and published by . This book was released on 2013-06-28 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jennifer Smith
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.E/5 ( download)
Download or read book Colloid Transport in Porous Media written by Jennifer Smith and published by . This book was released on 2006 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fritz H. Frimmel
Publisher : Springer Science & Business Media
ISBN 13 : 3540713395
Total Pages : 294 pages
Book Rating : 4.5/5 (47 download)
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.
Author : Jeffrey Y. Chen
Publisher :
ISBN 13 :
Total Pages : 138 pages
Book Rating : 4.:/5 (439 download)
Download or read book Modeling of Colloid Transport and Deposition Dynamics in Porous Media written by Jeffrey Y. Chen and published by . This book was released on 1998 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fritz H. Frimmel
Publisher : Springer Verlag
ISBN 13 : 9783540713388
Total Pages : 291 pages
Book Rating : 4.7/5 (133 download)
Download or read book Colloidal Transport in Porous Media written by Fritz H. Frimmel and published by Springer Verlag. This book was released on 2007-05-29 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloids are known to be the often neglected phase for the transport of pollutants in aquatic ecosystems. This book covers the basics of abiotic colloid characterization, of biocolloids and biofilms, the resulting transport phenomena and their engineering aspects. The contributors are leading specialists devoted to colloidal sciences. The discussion reflects their broad scope of viewpoint and depth of expertise. Coverage includes theoretical considerations, results from model experiments, and field studies.
Author : Li Cheng
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.:/5 (659 download)
Download or read book Modeling Physicochemical Processes of Microbial Transport in Porous Media written by Li Cheng and published by . This book was released on 2006 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The traditional colloid filtration model has been recognized to not fully describe transport of microorganisms in porous media under many conditions. Potential reasons for the discrepancies between colloid filtration theories and observed data are summarized into three aspects in the dissertation, including physicochemical heterogeneity, a blocking effect in the attachment process, and irreversible straining. A new transport model is developed to incorporate these non-ideal phenomena. First, both the collision-efficiency coefficient and the detachment-rate coefficient are formulated as probability density functions with log-normal distributions to represent physicochemical heterogeneity of both microbial and porous-medium grain surfaces. Second, the blocking effect is represented by appending a modified random sequential adsorption (RSA) function to the kinetic rate equation. Third, a semi-empirical equation is developed to describe the straining effect. The new model is then evaluated with a series of sensitivity analyses and illustrative applications to measured data. Sensitivity analysis on the role of probability density function (PDF) in collision efficiency and detachment rate coefficient shows that heterogeneity causes longer tailing in breakthrough curves, This effect is controlled by the implementation of the PDF in the detachment rate coefficient because the lower values among a series of detachment rate coefficients delay detachment. Straining phenonmena have received more and more attentions for protozoa transport. The new semi-empirical straining equation derived in the dissertation provides reasonable matches to the colloid data and cryptosporidium data. The Blocking effect is another process of concern for microbial transport, as shown in the analysis of microsporidium column experiments herein. The new model also proved to be successful for simulating MS-2 virus transport. The work presented will help enhance our understanding of biocolloid transport in porous media.
Author : Ning Sun
Publisher :
ISBN 13 :
Total Pages : 476 pages
Book Rating : 4.:/5 (399 download)
Download or read book Colloid Transport in Physically and Geochemically Heterogeneous Porous Media written by Ning Sun and published by . This book was released on 1998 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ann Mathew
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (76 download)
Download or read book Colloid Transport in Saturated Porous Media written by Ann Mathew and published by . This book was released on 2007 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhaoli Guo
Publisher : World Scientific
ISBN 13 : 9814508314
Total Pages : 419 pages
Book Rating : 4.8/5 (145 download)
Download or read book Lattice Boltzmann Method And Its Application In Engineering written by Zhaoli Guo and published by World Scientific. This book was released on 2013-03-25 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lattice Boltzmann method (LBM) is a relatively new simulation technique for the modeling of complex fluid systems and has attracted interest from researchers in computational physics. Unlike the traditional CFD methods, which solve the conservation equations of macroscopic properties (i.e., mass, momentum, and energy) numerically, LBM models the fluid consisting of fictive particles, and such particles perform consecutive propagation and collision processes over a discrete lattice mesh.This book will cover the fundamental and practical application of LBM. The first part of the book consists of three chapters starting form the theory of LBM, basic models, initial and boundary conditions, theoretical analysis, to improved models. The second part of the book consists of six chapters, address applications of LBM in various aspects of computational fluid dynamic engineering, covering areas, such as thermo-hydrodynamics, compressible flows, multicomponent/multiphase flows, microscale flows, flows in porous media, turbulent flows, and suspensions.With these coverage LBM, the book intended to promote its applications, instead of the traditional computational fluid dynamic method.
Author : Xinyao Yang
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783847377405
Total Pages : 244 pages
Book Rating : 4.3/5 (774 download)
Download or read book Colloid Transport and Attenuation in Saturated Porous Media written by Xinyao Yang and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloids refer to particles or macromolecules with at least one dimension of 1nm 1m. A wide range of environmental particles fall within this category including microorganisms, nanoparticles, and mineral precipitates. Understanding colloid fate and transport in porous medium not only permits more effective protection of water supplies, but also allows for the development of more effective pollutant remediation strategies. Organic matter (OM) complicates colloid behaviour. To date the influence of OM on colloid mobility in porous media has been largely qualitative. This book presents research leading to the development of multiple-pulse column techniques that may be integrated with mathematical models to quantify the effects of OM on particulate colloid attenuation in saturated porous medium. Research has investigated how two groups of environmental organic compounds, humic acids and proteins, influence particulate colloid attenuation by saturated sand. Study findings may shed light on complex colloidal behaviour in organic matter impacted environment and be useful to professionals in contaminant hydrogeology, environmental remediation, and wastewater treatment.
Author : Philip Randolph Johnson
Publisher :
ISBN 13 :
Total Pages : 308 pages
Book Rating : 4.:/5 (345 download)
Download or read book Modeling Deposition Dynamics and Transport of Colloidal Particles in Heterogeneously-charged Porous Media written by Philip Randolph Johnson and published by . This book was released on 1995 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. A. van der Toorn
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (69 download)
Download or read book Transport of Pollutants Through Porous Media Facilitated by Colloids written by R. A. van der Toorn and published by . This book was released on 1995 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Erika Lorna Kraft
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (721 download)
Download or read book Quantitative, Multi-spectral, Light-transmission Imaging of Colloid Transport in Porous Media at the Meso Scale written by Erika Lorna Kraft and published by . This book was released on 2011 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Colloids, particles smaller than ten microns in diameter, are ubiquitous in the subsurface. Colloids have an effect on the transport of contaminants that bind to their surfaces, and can reduce the permeability of aquifer materials through deposition. Some microorganisms, including pathogens, are also transported in the subsurface as colloids. The study of colloid transport behavior is important to the improvement of contaminant transport predictions, and thus to the protection of water quality. Imaging technologies provide detailed spatial-temporal concentration data not obtainable by traditional methods, which rely on the collection and analysis of water samples at discrete locations. A quantitative, light-transmission imaging system was developed for the observation of solute and colloid transport in a chamber containing porous media. Multi-spectral LEDs and high-quality optical filters were used with a sensitive charge-coupled device camera to obtain images of a 47x57cm sand pack containing two fluorescent tracers--disodium fluorescein and red-fluorescent latex colloids. The properties of the optical components, and the selection of tracers, were optimized to allow for collection of data on three distinct properties of the system in time and space--water content, fluorescein concentration, and colloid concentration. An image processing technique was developed to normalize collected images and to remove noise. The system was calibrated through comparison of processed intensities with known fluorescein and colloid concentrations. Quantification was possible over the concentration range 10-2 to 102ppm for fluorescein, and 10-1 to 103ppm for colloids. This wide range of detection and the very low detection limits were made possible by the improvement in the signal-to-noise ratio that resulted from system development. Experiments were conducted to demonstrate the utility of this method to observe and quantify fluorescein and colloid transport. Model predictions compared favorably with collected data over multiple data sets, each containing approximately 300 data points. Colloid transport was reasonably fit by the advection-dispersion equation using a retardation factor and a first-order deposition coefficient to represent colloid interactions with the sand surface. In some cases, accurate description of colloid transport will require a more detailed parameterization of colloid dynamics that was beyond the scope of this work. Data presented in this thesis however demonstrate the power of this system to provide insight into the fate and transport of fluorescein and colloids in porous media. These insights facilitate prevention of groundwater pollution by colloidal contaminants, and contribute to effective design of remediation strategies for colloid-contaminated environments.
Author : Malay K. Das
Publisher : Springer
ISBN 13 : 3319698664
Total Pages : 250 pages
Book Rating : 4.3/5 (196 download)
Download or read book Modeling Transport Phenomena in Porous Media with Applications written by Malay K. Das and published by Springer. This book was released on 2017-11-21 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an ensemble of six major chapters, an introduction, and a closure on modeling transport phenomena in porous media with applications. Two of the six chapters explain the underlying theories, whereas the rest focus on new applications. Porous media transport is essentially a multi-scale process. Accordingly, the related theory described in the second and third chapters covers both continuum‐ and meso‐scale phenomena. Examining the continuum formulation imparts rigor to the empirical porous media models, while the mesoscopic model focuses on the physical processes within the pores. Porous media models are discussed in the context of a few important engineering applications. These include biomedical problems, gas hydrate reservoirs, regenerators, and fuel cells. The discussion reveals the strengths and weaknesses of existing models as well as future research directions.
Author : Timm Krüger
Publisher : Springer
ISBN 13 : 3319446495
Total Pages : 705 pages
Book Rating : 4.3/5 (194 download)
Download or read book The Lattice Boltzmann Method written by Timm Krüger and published by Springer. This book was released on 2016-11-07 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an introduction to the theory, practice, and implementation of the Lattice Boltzmann (LB) method, a powerful computational fluid dynamics method that is steadily gaining attention due to its simplicity, scalability, extensibility, and simple handling of complex geometries. The book contains chapters on the method's background, fundamental theory, advanced extensions, and implementation. To aid beginners, the most essential paragraphs in each chapter are highlighted, and the introductory chapters on various LB topics are front-loaded with special "in a nutshell" sections that condense the chapter's most important practical results. Together, these sections can be used to quickly get up and running with the method. Exercises are integrated throughout the text, and frequently asked questions about the method are dealt with in a special section at the beginning. In the book itself and through its web page, readers can find example codes showing how the LB method can be implemented efficiently on a variety of hardware platforms, including multi-core processors, clusters, and graphics processing units. Students and scientists learning and using the LB method will appreciate the wealth of clearly presented and structured information in this volume.
Author :
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.3/5 (121 download)
Download or read book Colloid Mobilization and Transport in Contaminant Plumes written by and published by . This book was released on 1999 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacob H. Masliyah
Publisher : John Wiley & Sons
ISBN 13 : 0471799734
Total Pages : 733 pages
Book Rating : 4.4/5 (717 download)
Download or read book Electrokinetic and Colloid Transport Phenomena written by Jacob H. Masliyah and published by John Wiley & Sons. This book was released on 2006-05-26 with total page 733 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new, definitive perspective of electrokinetic and colloid transport processes Responding to renewed interest in the subject of electrokinetics, Electrokinetic and Colloid Transport Phenomena is a timely overview of the latest research and applications in this field for both the beginner and the professional. An outgrowth of an earlier text (by coauthor Jacob Masliyah), this self-contained reference provides an up-to-date summary of the literature on electrokinetic and colloid transport phenomena as well as direct pedagogical insight into the development of the subject over the past several decades. A distinct departure from standard colloid science monographs, Electrokinetic and Colloid Transport Phenomena presents the most salient features of the theory in a simple and direct manner, allowing the book to serve as a stepping-stone for further learning and study. In addition, the book uniquely discusses numerical simulation of electrokinetic problems and demonstrates the use of commercial finite element software for solving these multiphysics problems. Among the topics covered are: * Mathematical preliminaries * Colloidal systems * Electrostatics and application of electrostatics * Electric double layer * Electroosmosis and streaming potential * Electrophoresis and sedimentation potential * London-Van der Waals forces and the DLVO theory * Coagulation and colloid deposition * Numerical simulation of electrokinetic phenomena * Applications of electrokinetic phenomena Because this thorough reference does not require advanced mathematical knowledge, it enables a graduate or a senior undergraduate student approaching the subject for the first time to easily interpret the theories. On the other hand, the application of relevant mathematical principles and the worked examples are extremely useful to established researchers and professionals involved in a wide range of areas, including electroosmosis, streaming potential, electrophoretic separations, industrial practices involving colloids and complex fluids, environmental remediation, suspensions, and microfluidic systems.
