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Author: Chandan Das
Publisher: CRC Press
ISBN: 0429998783
Category : Science
Languages : en
Pages : 390
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Book Description
Membranes and membrane separation techniques have grown from a simple laboratory tool to an industrial process with considerable technical and commercial impact. The book deals with both the fundamental concepts of preparation, characterization and modification, practical applications along with recent advancements of electro-spun and phase inverted polymeric membranes. Divided into two parts, part one of this book covers the fundamental concepts and practical applications of novel electro-spun membranes while the latter covers basic concepts and further advancements of the conventional phase inverted membranes extensively. Key Features Covers fundamental concepts and practical applications of electro-spun and phase inverted polymeric membranes Includes general properties, characterization, preparation and modification of polymeric membranes Discusses advanced modification of polymeric membranes (functionalization, grafting) using phase inversion process, and effects of solubility parameter and additives on the phase inversion process Reviews electro-spun membranes for biomedical applications, industrial effluents treatment and removal of water contaminants Explores a separate economic analysis section for the discussed membranes
Author: Chandan Das
Publisher: CRC Press
ISBN: 0429998783
Category : Science
Languages : en
Pages : 390
Get Book Here
Book Description
Membranes and membrane separation techniques have grown from a simple laboratory tool to an industrial process with considerable technical and commercial impact. The book deals with both the fundamental concepts of preparation, characterization and modification, practical applications along with recent advancements of electro-spun and phase inverted polymeric membranes. Divided into two parts, part one of this book covers the fundamental concepts and practical applications of novel electro-spun membranes while the latter covers basic concepts and further advancements of the conventional phase inverted membranes extensively. Key Features Covers fundamental concepts and practical applications of electro-spun and phase inverted polymeric membranes Includes general properties, characterization, preparation and modification of polymeric membranes Discusses advanced modification of polymeric membranes (functionalization, grafting) using phase inversion process, and effects of solubility parameter and additives on the phase inversion process Reviews electro-spun membranes for biomedical applications, industrial effluents treatment and removal of water contaminants Explores a separate economic analysis section for the discussed membranes
Author: Chandan Das
Publisher: CRC Press
ISBN: 0429998775
Category : Science
Languages : en
Pages : 404
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Book Description
Membranes and membrane separation techniques have grown from a simple laboratory tool to an industrial process with considerable technical and commercial impact. The book deals with both the fundamental concepts of preparation, characterization and modification, practical applications along with recent advancements of electro-spun and phase inverted polymeric membranes. Divided into two parts, part one of this book covers the fundamental concepts and practical applications of novel electro-spun membranes while the latter covers basic concepts and further advancements of the conventional phase inverted membranes extensively. Key Features Covers fundamental concepts and practical applications of electro-spun and phase inverted polymeric membranes Includes general properties, characterization, preparation and modification of polymeric membranes Discusses advanced modification of polymeric membranes (functionalization, grafting) using phase inversion process, and effects of solubility parameter and additives on the phase inversion process Reviews electro-spun membranes for biomedical applications, industrial effluents treatment and removal of water contaminants Explores a separate economic analysis section for the discussed membranes
Author: Tawfik Abdo Saleh
Publisher: Elsevier
ISBN: 0128014407
Category : Technology & Engineering
Languages : en
Pages : 286
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Book Description
Nanomaterial and Polymer Membranes: Synthesis, Characterization, and Applications presents a unique collection of up-to-date polymeric nanomaterial membranes. The book offers a perfect source to document state-of-the-art developments and innovations in nanocomposite membranes, ranging from materials development and characterization of properties to membrane applications. The book discusses applications that encompass the enhancement of sorption and degradation processes and their usage for the removal of different pollutants, including heavy metals, dyes, pesticides, and other organic and inorganic pollutants from the industry. Presents a powerful single source for the development of new, rapid, and highly efficient membrane composites Offers a perfect source to document state-of-the-art developments and innovations in nanocomposite membranes, ranging from materials development and characterization of properties to membrane applications Covers applications in membrane science, water treatment, and the removal of pollutants from waste water Provides theoretical and practical information about the synthesis and application of polymeric nanocomposite membranes Includes instructor support material available at textbooks.elsevier.com
Author: Nidal Hilal
Publisher: CRC Press
ISBN: 1439866368
Category : Science
Languages : en
Pages : 503
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Book Description
Membrane Modification: Technology and Applications is written for engineers, scientists, graduate students, and researchers in the field of membrane science and technology, materials science, applied physics, chemistry, and environmental science. The book presents the complete range of membrane modification techniques used to increase efficiency of
Author: Zhi-Kang Xu
Publisher: Springer Science & Business Media
ISBN: 3540884130
Category : Technology & Engineering
Languages : en
Pages : 345
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Book Description
Surface Engineering of Polymer Membranes covers the processes that modify membrane surfaces to improve their in-service performance, meaning, to confer surface properties which are different from the bulk properties. Purposes may be to minimize fouling, modulate hydrophilicity/ hydrophobicity, enhance biocompatibility, create diffusion barriers, provide functionalities, mimic biomembranes, fabricate nanostructures, etc. First, the basics of surface engineering of polymer membranes are covered. Then topics such as surface modification by graft polymerization and macromolecule immobilization, biomimetic surfaces, enzyme immobilization, molecular recognition, and nanostructured surfaces are discussed. This book provides a unique synthesis of the knowledge of the role of surface chemistry and physics in membrane science. Dr. Zhikang Xu of the Institute of Polymer Science of Zhejiang University has eight Chinese patents and in 2006 was honored as a Distinguished Young Scholar by the National Natural Science Foundation of China (NNSFC).
Author: Rasel Das
Publisher: Materials Research Forum LLC
ISBN: 1644901633
Category : Technology & Engineering
Languages : en
Pages : 342
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Book Description
Various organic and synthetic polymers are important materials for the removal of organic and inorganic pollutants from wastewater and the separation of gases. The book discusses various types of membranes for microfiltration, ultrafiltration, nanofiltration, reverse osmosis, forward osmosis etc. A number of nanomaterials are available for the modification of polymeric membranes. Keywords: Polymeric Membrane, Water Purification, Water Softening, Water Desalination, Gas Separation, Osmosis Membranes, Microfiltration, Ultrafiltration, Nanofiltration, Carbon Nanotube, Nanosheets, MOFs, Porous Organic Cages, Titanium Dioxide, Zinc Oxide, Mesoporous Silica Nanoparticles, O2/N2 Separation, CO2/CH4 Separation, H2/N2 Separation.
Author: K. C. Khulbe
Publisher: Springer Science & Business Media
ISBN: 3540739947
Category : Technology & Engineering
Languages : en
Pages : 208
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Book Description
Researchers in polymeric membranes as well as R&D professionals will find this work an essential addition to the literature. It concentrates on the method recently developed to study the surfaces of synthetic polymeric membranes using an Atomic Force Microscope (AFM), which is fast becoming a very important tool. Each chapter includes information on basic principles, commercial applications, an overview of current research and guidelines for future research.
Author: Brian McVerry
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
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Book Description
It is not unknown that the worldwide freshwater supply is dwindling and current freshwater sources are being contaminated. The total amount of freshwater, which makes up 2.5- 3% of the total water on earth, is actually sufficient to sustain the growing population for many years. However, the disproportionate geographical distribution of freshwater raises issues, as many people occupy arid regions. The transport or piping of large volumes of water over long distances is typically prohibitively expensive and/or prevented by geopolitical interests. The drive to produce freshwater locally from non-traditional sources has advanced in recent years and current energy and production costs have fallen due to technological advances. Filtration through polymeric materials has emerged as the leading technology for freshwater production from seawater, brackish water, and wastewater. Polymer membranes have surpassed ceramic membranes as the leading filtration medium because of their low-cost and versatility. Large sheets of membranes can be cast using an in-line manufacturing process and pore sizes can be readily tuned for specific applications. However, membrane fouling severely limits the advantages and economics of polymeric membrane-based separations. This dissertation will examine methods to produce fouling-resistant membranes that maintain the low- cost and scalability of polymer membranes for ultrafiltration and reverse osmosis. The first chapter presents a brief history and introduction to membrane technology and its current status. This chapter outlines membrane casting methods, the polymers used in casting films and their advantages, different configurations for membrane modules, the effects of fouling, and the cost of fouling. The second chapter introduces a new hydrophilic, polyaniline-based additive that was synthesized to blend into polysulfone unltrafiltration membranes. Sulfonated polyaniline (SPANi) is a self-doped polyaniline derivative that is readily synthesized using fuming sulfuric acid. SPANi, when de-doped, is soluble in polar organic solvents and insoluble in water, making it an excellent candidate for blending into ultrafiltration membranes. When redoped at pH 7, the presence of pendant sulfonic acid groups creates a zwitterionic species. Zwitterionic moeities are known to possess super-hydrophilic and ultra-low fouling properties. When blended into polysulfone (PSf) ultrafiltration membranes at low concentrations, the SPANi-PSf membranes demonstrate greater hydrophilicity and anti-fouling properties when compared to pure PSf membranes with nominal changes in performance. For reverse osmosis (RO) membranes, the active or "skin" layer that performs the separation is a dense, non-porous polymer. Thus, blending hydrophilic molecules into the active layer or modifying the chemistry of the active layer affects the separation properties of the resulting polymer blend. To address this issue, researchers have grafted hydrophilic polymers to the surface of membranes to impart anti-fouling properties without significant changes in their performance. In Chapter 3, a new method is presented using photoactive hydrophilic polymer precursors to modify membrane surfaces. With this new method, commercial RO membranes can be modified rapidly under ambient conditions, maintaining the roll-to-roll scalability of RO membrane processing. The grafted commercial RO membranes exhibit enhanced hydrophilicity and anti-fouling properties when compared with unmodified RO membranes. Chapter 4 investigates applying the same method of imparting anti-fouling properties to polymeric membranes as discussed in Chapter 3, except here this method is applied to ultrafiltration (UF) membranes used for membrane bioreactors. Membrane bioreactor technology has gained attention recently for its highly efficient ability to clean wastewater. However, the concentrated loading of organics and microorganisms into the reactor medium leads to high fouling rates. First, modeling data are presented that identifies specific acid-base interactions between different foulants and the membrane surface that accelerate membrane fouling. New photoactive small molecule precursors were then synthesized and covalently bound to the membrane surface to repel these interactions. The small molecule with the greatest repulsive interaction, a zwitterionic derivative, imparted the greatest anti-fouling properties to the commercial UF membranes. The modified membranes exhibited low fouling rates in both a short-term and a long-term study. Chapter 5 summarizes the dissertation and outlines the key takeaways.
Author: Stephen Gray
Publisher: CRC Press
ISBN: 1351730886
Category : Science
Languages : en
Pages : 621
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Book Description
Membranes are an energy efficient separation technology that are now the basis for many water treatment and food processing applications. However, there is the potential to improve the operating performance of these separations and to extend the application of membranes to energy production, gas separations, organic solvent-based separations, and biomedical applications through novel membrane materials. This book contains 20 chapters written by leading academic researchers on membrane fabrication and modification techniques and provides a comprehensive overview on the recent developments of membrane technology. Membranes can be manufactured from a range of materials including polymeric compounds, and ceramic materials, and both these materials are considered in the book. There are 5 chapters on water and wastewater membranes that cover the fabrication of thin film (TFC) composite membranes for nanofiltration(NF)/reverse osmosis (RO)/forward osmosis (FO) applications, stimuli responsive membranes, electrospun membranes, porous ceramic membranes, and polymeric ultrafiltration (UF) manufacture and modification. There are another 6 chapters on gas separation that consider carbon membranes, zeolite membranes, silica template and metal oxide silica membranes, TFC membranes, silica membranes, and metal organic framework (MOF) membranes. Zeolite membranes are also considered for organic solvent applications, as are solvent-resistant membranes manufactured by phase inversion, ceramic-supported composite membranes, and ceramic NF membranes. The emerging areas of membranes for energy and biomedical applications have 3 and 2 chapters, respectively. Energy applications consider ion exchange membranes for use in fuel cells, membranes for electrodialysis, and membranes for use in microbial fuel cells. For biomedical applications the chapters focus on hemodialysis membranes and redox responsive membranes.
Author: Sanjay K. Nayak
Publisher: Elsevier
ISBN: 0323885179
Category : Science
Languages : en
Pages : 677
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Book Description
Advancements in Polymer-Based Membranes for Water Remediation describes the advanced membrane science and engineering behind the separation processes within the domain of polymer-based membrane systems in water remediation. Emphasis has been put on several aspects, ranging from fundamental concepts to the commercialization of pressure and potential driven membranes, updated with the latest technological progresses, and relevant polymer materials and application potential towards water treatment systems. Also included in this book are advances in polymers for membrane application in reverse osmosis, nanofiltration, ultrafiltration, microfiltration, forward osmosis, and polymeric ion-exchange membranes for electrodialysis and capacitive deionization. With its critical analyzes and opinions from experts around the world, this book will garner considerable interest among actual users, i.e., scientists, engineers, industrialists, entrepreneurs and students. Evaluates water remediation using pressure driven and potential driven membrane processes Reviews emerging polymer systems for membranes preparation Offers a comprehensive analysis in the development of polymer-based membranes and their applications in water remediation Analyzes membrane performance parameters to evaluate separation efficiency for various water pollutants Covers concept-to-commercialization aspects of polymer-based membranes in terms of water purification, pollutant removal, stability and scalability
