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Modelling And Simulation Of Nanofiltration Membranes
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Book Synopsis Modelling and Simulation of Nanofiltration Membranes by : Gamze Artuğ
Download or read book Modelling and Simulation of Nanofiltration Membranes written by Gamze Artuğ and published by Cuvillier Verlag. This book was released on 2007 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamental Modeling of Membrane Systems by : Patricia Luis
Download or read book Fundamental Modeling of Membrane Systems written by Patricia Luis and published by Elsevier. This book was released on 2018-06-29 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamental Modelling of Membrane Systems: Membrane and Process Performance summarizes the state-of-the-art modeling approaches for all significant membrane processes, from molecular transport, to process level, helping researchers and students who carry out experimental research save time and accurately interpret experimental data. The book provides an overview of the different membrane technologies, handling micro-, ultra-, and nanofiltration, reverse and forward osmosis, pervaporation, gas permeation, supported liquid membranes, membrane contactors, membrane bioreactors and ion-exchange membrane systems. Examples of hybrid membrane systems are also included. Presents an accessible reference on how to model membranes and membrane processes Provides a clear, mathematical description of mass transfer in membrane systems Written by well-known, prominent authors in the field of membrane science
Book Synopsis Modeling in Membranes and Membrane-Based Processes by : Anirban Roy
Download or read book Modeling in Membranes and Membrane-Based Processes written by Anirban Roy and published by John Wiley & Sons. This book was released on 2020-04-07 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Modeling in Membranes and Membrane-Based Processes is based on the idea of developing a reference which will cover most relevant and “state-of-the-art” approaches in membrane modeling. This book explores almost every major aspect of modeling and the techniques applied in membrane separation studies and applications. This includes first principle-based models, thermodynamics models, computational fluid dynamics simulations, molecular dynamics simulations, and artificial intelligence-based modeling for membrane separation processes. These models have been discussed in light of various applications ranging from desalination to gas separation. In addition, this breakthrough new volume covers the fundamentals of polymer membrane pore formation mechanisms, covering not only a wide range of modeling techniques, but also has various facets of membrane-based applications. Thus, this book can be an excellent source for a holistic perspective on membranes in general, as well as a comprehensive and valuable reference work. Whether a veteran engineer in the field or lab or a student in chemical or process engineering, this latest volume in the “Advances in Membrane Processes” is a must-have, along with the first book in the series, Membrane Processes, also available from Wiley-Scrivener.
Book Synopsis Modeling Low-pressure Nanofiltration Membranes and Hollow Fiber Modules for Softening and Pretreatment in Seawater Reverse Osmosis by : Omar Labban
Download or read book Modeling Low-pressure Nanofiltration Membranes and Hollow Fiber Modules for Softening and Pretreatment in Seawater Reverse Osmosis written by Omar Labban and published by . This book was released on 2016 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, interest in nanofiltration (NF) has been surging, as has interest using it as a technology for better brine management and pretreatment in reverse osmosis (RO) plants. Using NF for pretreatment reduces fouling and scaling in RO units, allowing for potentially higher recoveries. This lowers the environmental impact of RO by decreasing the amount of water to be treated per unit volume of water produced, and reducing the volume of RO brine to be managed. This can potentially curb the CO2 emissions resulting from the RO desalination process. A novel class of low-pressure nanofiltration (NF) hollow fiber membranes, particularly suited for water softening and desalination pretreatment have lately been fabricated in-house using layer-by-layer (LbL) deposition with chemical crosslinking. These membranes can operate at exceedingly low pressures (2 bar), while maintaining relatively high rejections of multivalent ions. In spite of their great potential, our understanding as to what makes them superior has been limited, demanding further investigation before any large-scale implementation can be realized. In this study, the Donnan-Steric Pore Model with dielectric exclusion (DSPM-DE) is applied for the first time to these membranes to describe the membrane separation performance, and to explain the observed rejection trends, including negative rejection, and their underlying multi-ionic interactions. Experiments were conducted on a spectrum of feed chemistries, ranging from uncharged solutes to single salts, salt mixtures, and artificial seawater to characterize the membrane and accurately predict its performance. Modeling results were validated with experiments, and then used to elucidate the working principles that underly the low-pressure softening process. An approach based on sensitivity analysis shows that the membrane pore dielectric constant, followed by the pore size, are primarily responsible for the high selectivity of the NF membranes to multivalent ions. Surprisingly, the softening process is found not to be sensitive to changes in membrane charge density. Our findings demonstrate that the unique ability of these membranes to exclusively separate multivalent ions from the solution, while allowing monovalent ions to permeate, is key to making this lowpressure softening process realizable. Given its high surface area to volume ratio and desirable mass transfer characteristics, the hollow fiber module configuration has been central to the development of reverse osmosis (RO) and ultrafiltration (UF) technologies over the past five decades. Following the development of the LbL membrane, interest in their scale-up implementation for softening and desalination pretreatment has been growing. Further progress on large-scale deployment, however, has been restrained by the lack of an accurate predictive model, which is pivotal to guiding module design and operation. Earlier models targeting hollow fiber modules are only suitable for RO or UF technologies, and no appropriate NF models have been presented to characterize the performance of hollow fiber modules at the large-scale. In this work, we propose a new modeling approach based on the implementation of mass and momentum balances, coupled with a suitable membrane transport model, such as the Donnan-Steric Pore Model with dielectric exclusion (DSPM-DE), to predict module performance at the system-level. We then propose a preliminary module design, and employ parametric studies to investigate the effect of varying key system parameters and to elucidate the tradeoffs available to the module designer. The model has significant implications for low-pressure nanofiltration, as well as hollow fiber NF module design and operation. An approach based on comparing the marginal increase in system recovery to the marginal increase in transmembrane pressure (TMP) was used to define an optimal operating point. Our findings reveal that increasing the TMP could potentially increase energy savings under some operating conditions.
Book Synopsis Nanofiltration, 2 Volume Set by : Andrea Iris Schäfer
Download or read book Nanofiltration, 2 Volume Set written by Andrea Iris Schäfer and published by John Wiley & Sons. This book was released on 2021-08-09 with total page 1267 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated guide to the growing field of nanofiltration including fundamental principles, important industrial applications as well as novel materials With contributions from an international panel of experts, the revised second edition of Nanofiltration contains a comprehensive overview of this growing field. The book covers the basic principles of nanofiltration including the design and characterizations of nanofiltration membranes. The expert contributors highlight the broad ranges of industrial applications including water treatment, food, pulp and paper, and textiles. The book explores photocatalytic nanofiltration reactors, organic solvent nanofiltration, as well as nanofiltration in metal and acid recovery. In addition, information on the most recent developments in the field are examined including nanofiltration retentate treatment and renewable energy-powered nanofiltration. The authors also consider the future of nanofiltration materials such as carbon- as well as polymer-based materials. This important book: Explores the fast growing field of the membrane process of nanofiltration Examines the rapidly expanding industrial sector's use of membranes for water purification Covers the most important industrial applications with a strong focus on water treatment Contains a section on new membrane materials, including carbon-based and polymer-based materials, as well as information on artificial ion and water channels as biomimetic membranes Written for scientists and engineers in the fields of chemistry, environment, food and materials, the second edition of Nanofiltration provides a comprehensive overview of the field, outlines the principles of the technology, explores the industrial applications, and discusses new materials.
Book Synopsis Modeling Mass Transfer and Assessing Cost and Performance of a Hollow Fiber Nanofiltration Membrane Process by : David T. Yonge
Download or read book Modeling Mass Transfer and Assessing Cost and Performance of a Hollow Fiber Nanofiltration Membrane Process written by David T. Yonge and published by . This book was released on 2016 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bench-scale water treatment testing of three next generation hollow-fiber (HF) nanofiltration (NF) membranes was conducted to characterize divalent ion rejection capabilities and investigate removal mechanisms. Existing mathematical models were investigated to describe solute transport using synthetic magnesium sulfate solutions including the size exclusion model, homogenous solution diffusion (HSD) model, dimensional analysis, and the HSD model incorporating film theory. Solute transport for two of the membranes were described by HSD theory and were predictive of their 90% divalent ion removal. A third membrane was more accurately modeled using size exclusion and was found to be predictive of its 40% divalent ion rejection. Feed ionic strength variation was shown to significantly impact rejection. In this work, semi-empirical models were developed to describe solute transport under varying feed ionic strength conditions. Bench-scale testing of aerated groundwater confirmed the HFNF membrane divalent ion rejection capabilities. Pilot testing of a commercially available HFNF membrane was shown to remove divalent ions and dissolved organic carbon (DOC) by 10% and 25%, respectively. Financial evaluations indicated that HFNF offered cost savings over traditional spiral-wound (SW) NF, $0.60/kgal versus $0.85/kgal operating costs, respectively. Traditional SWNF membranes produced superior water quality achieving 90% divalent ion removal and 96% DOC removal but required media and membrane filtration pretreatment. When considering the costs of constructing a new 2 million gallon per day (permeate) HFNF process, conceptual cost comparisons revealed that HFNF technologies could reduce capital costs by approximately $1 million, and operating costs by $0.27/kgal for an 85% recovery plant.
Book Synopsis Nanofiltration for Sustainability by : Abdul Mohammad
Download or read book Nanofiltration for Sustainability written by Abdul Mohammad and published by CRC Press. This book was released on 2023-09-30 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a novel exploration of the application of nanofiltration membrane technology for sustainability in various industries, situated in view of recent breakthroughs and the use of reuse, recycle and resource recovery approaches. Moving from a comprehensive discussion of nanofiltration membrane processes to case studies and real-world applications of nanofiltration technology across society, both successes and potential limitations are considered. Features: Detailed discussion of the fundamentals of nanofiltration technology The concepts of reuse, recycle and resource recovery using nanofiltration technology are explored in combination with other technologies to advance circular economy Considered across a range of industries, such as textiles, oil, gas, agriculture and pharmaceutics Written in a thoroughly detailed manner, this book is an essential guide for industry professionals interested in sustainability and working toward a circular economy. Comprehensive discussions of the fundamental processes underpinning nanofiltration technology also make this book particularly appealing to students of industrial chemistry.
Book Synopsis Rejection of Emerging Organic Contaminants by Nanofiltration and Reverse Osmosis Membranes by : Victor Augusto Yangali Quintanilla
Download or read book Rejection of Emerging Organic Contaminants by Nanofiltration and Reverse Osmosis Membranes written by Victor Augusto Yangali Quintanilla and published by CRC Press. This book was released on 2010-05-11 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollution of water sources with emerging contaminants (micropollutants) is a fact known worldwide. Although the risks of micropollutants in sources of water are partly recognized, interpretation of consequences are controversial; thus, the future effects of altered water with micropollutants remains uncertain and may constitute a point of conc
Book Synopsis Mathematical Modeling of the Pressure-driven Performance of Nanofiltration Membranes by : Jesus García-Alemán
Download or read book Mathematical Modeling of the Pressure-driven Performance of Nanofiltration Membranes written by Jesus García-Alemán and published by . This book was released on 1998 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Membrane Desalination by : Andreas Sapalidis
Download or read book Membrane Desalination written by Andreas Sapalidis and published by CRC Press. This book was released on 2020-09-13 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to provide details about membrane desalination processes, starting from basic concepts leading to real world implementation. Chapters cover novel research topics such as biomimetic and nanocomposite membranes, nanostructured fillers for mixed matrix membranes, advanced characterization techniques and molecular modeling. Additionally, engineering and economical aspects of desalination as well as the exploitation of green energy sources are thoroughly presented. This books targets bridging the gap between the everyday research laboratory practices with practical application demands, so that the readers gain a global perspective of all desalination challenges.
Book Synopsis Modeling Nanofiltration for Large Scale Desalination Applications by : Yagnaseni Roy
Download or read book Modeling Nanofiltration for Large Scale Desalination Applications written by Yagnaseni Roy and published by . This book was released on 2015 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Donnan Steric Pore Model with dielectric exclusion (DSPM-DE) is implemented over flatsheet and spiral-wound leaves to develop a comprehensive model for nanofiltration modules. This model allows the user to gain insight into the physics of the nanofiltration process by allowing one to adjust and investigate effects of membrane charge, pore radius, and other membrane characteristics. The study shows how operating conditions such as feed flow rate and pressure affect the recovery ratio and solute rejection across the membrane. A comparison is made between the results for the flat-sheet and spiral-wound configurations. The comparison showed that for the spiral-wound leaf, the maximum values of transmembrane pressure, flux and velocity occur at the feed entrance (near the permeate exit), and the lowest value of these quantities are at the diametrically opposite corner. This is in contrast to the flat-sheet leaf, where all the quantities vary only in the feed flow direction. However it is found that the extent of variation of these quantities along the permeate flow direction in the spiral-wound membrane is negligibly small in most cases. Also, for identical geometries and operating conditions, the flatsheet and spiral-wound configurations give similar results. Thus the computationally expensive and complex spiral-wound model can be replaced by the flat-sheet model for a variety of purposes. In addition, the model was utilized to predict the performance of a seawater nanofiltration system which has been validated with the data obtained from a large-scale seawater desalination plant, thereby establishing a reliable model for desalination using nanofiltration.
Book Synopsis Modeling and Simulation of Functional Nanomaterials for Forensic Investigation by : Rakha, Allah
Download or read book Modeling and Simulation of Functional Nanomaterials for Forensic Investigation written by Rakha, Allah and published by IGI Global. This book was released on 2023-06-12 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanotechnology continues to contribute to the progress of innovations in the area of forensic science ranging from sensing, DNA monitoring, and counterfeiting to fingerprinting. In recent years, functional nanomaterials are widely applied in nanoscience and forensic investigation. They can be used in future interdisciplinary research by scientists, engineers, and biotechnologists. Modeling and Simulation of Functional Nanomaterials for Forensic Investigation focuses on multiple applications related to forensics and provides information linked with nanoparticles. This book provides nanotechnology results in improving the sensitivity of established forensic techniques. It further focuses on different fabrication and characterization techniques of nanomaterials and relates their characteristics with forensic applications. Covering topics such as explosive detection, nano-forensic testing, and nano-trackers, this premier reference source is a comprehensive resource for material engineers, chemical engineers, nanotechnologists, biotechnologists, forensic scientists, students and educators of higher education, researchers, and academicians.
Book Synopsis Multiscale Modelling of Transfer Mechanisms Through Nanofiltration Membranes by : Haochen Zhu
Download or read book Multiscale Modelling of Transfer Mechanisms Through Nanofiltration Membranes written by Haochen Zhu and published by . This book was released on 2011 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although nanofiltration (NF) has attracted increasing attention over the recent years, its current industrial applications are still limited compared to the great potentialities of this clean process. The major reason is that the physical phenomena involved in separation at the nanoscale are still poorly understood and the relative success of current NF models can be attributed in large part to the fact that key properties of membranes (like their surface charge density) and confined fluids (like the dielectric constant of the solution in the membrane pores) are most often fitting parameters that have only limited correspondence to reality. The aim of this thesis work was to improve the understanding of ion-transfer mechanisms through NF membranes. A model coupling the hydrodynamics of the system with fluid / material interactions was developed. It was shown that the inhomogeneous distribution of the surface charges inside the skin layer of a membrane significantly affects the transport of ions and the rejection capacities of the membrane material. In order to investigate the effect of confinement on the physical properties of aqueous solutions, molecular dynamics simulations of electrolyte solutions confined in a model silica nanopore were performed. The simulations revealed a structuration of the fluid in the neighbourhood of the pore surface, a significant decrease in diffusion coefficients and a strong modification of the dielectric properties of ionic solutions that can lead to either repulsive or attractive Born effects depending on the nature of ions.
Book Synopsis Current Trends and Future Developments on (Bio-) Membranes by : Angelo Basile
Download or read book Current Trends and Future Developments on (Bio-) Membranes written by Angelo Basile and published by Elsevier. This book was released on 2021-12-03 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport Phenomena in Membranes illustrates many aspects of mass transport in different membranes used in separation processes, along with their advantages when compared with other types of separation methods. This book focuses on introducing and analyzing transport phenomena in membranes and overviewing achievements in the development of mass transport mechanisms of various membranes. Hence, this book is a key reference text for R&D managers in industry interested in the development of membrane technologies as well as academic researchers and postgraduate students working in the wider area of the strategic treatment, separation and purification processes. This book is intended to act as a resource for a wide range of people in various separation fields, including students and researchers, consultants and engineers, operators and managers, who have an interest in membrane technology. Describes developments in transport phenomena in different membrane processes Provides a comprehensive reference book in the membrane field for students and engineers Describes membrane separation fundamentals and relates them to various potential applications
Book Synopsis Chemical Process Design, Simulation and Optimization by : Jean-Pierre Corriou
Download or read book Chemical Process Design, Simulation and Optimization written by Jean-Pierre Corriou and published by MDPI. This book was released on 2021-02-19 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents a series of articles devoted to modeling, simulation, and optimization of processes, mainly chemical. General methods for process modeling and numerical simulation are described with flowsheeting. Population balances are addressed in detail with application to crystal production; energy saving is frequently optimized, including exergy analysis. The coupling between process simulation and computational fluid dynamics is studied for air classification and bubble columns. Pressure swing adsorption, reactive distillation, and nanofiltration are explained in general and applied to particular processes. The synthesis of carbon dots is solved by the design of experiments method. A safety study addresses the consequences of gas explosion.
Book Synopsis Membrane Technologies by : Katarzyna Staszak
Download or read book Membrane Technologies written by Katarzyna Staszak and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-10-03 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane techniques are an excellent alternative to traditional methods of purification and separation. This book covers issues related to the most recent developments in the field of membrane techniques. The latest scientific research and their potential applications in industrial solutions are described. In addition, currents trends in food & beverages technologies, and biomedicine are discussed. Moreover, the book emphasizes recent advancements in design of membrane systems, used either for separation or creation of mixtures, from the perspective of industry 4.0 and data management.
Book Synopsis Membrane Distillation by : Mohamed Khayet Souhaimi
Download or read book Membrane Distillation written by Mohamed Khayet Souhaimi and published by Elsevier. This book was released on 2011-08-12 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern membrane engineering is critical to the development of process-intensification strategies and to the stimulation of industrial growth. Membrane Distillation (MD) is a broad reference that covers specific information on membranes available and methods for MD membrane preparation and characterization. The book offers an introduction to the terminology and fundamental concepts as well as a historical review of MD development. Commercial membranes used in MD as well as laboratory-made membranes, including emerging membranes, are described in detail and illustrated by a number of clear and instructive schematic drawings and images. A comprehensive review on the development of MD membranes, MD modules, MD membrane characterization, MD configurations, applications in different areas and theoretical models Introduction to the terminology and fundamental concepts associated with MD as well as an historical review of MD development Description of commercial membranes used in MD as well as laboratory-made membranes, including emerging membranes