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Author: Eliezer Gileadi
Publisher: Springer Science & Business Media
ISBN: 1468417312
Category : Science
Languages : en
Pages : 234
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Book Description
The gradual emergence during the last decade of the study of the mechanism of electrode reactions from the dark ages has given stimulus to a consideration of the double layer at metal-solution interfaces, which extends far outside the classical experimental studies of the capacitance of the mercury solution interface made during the 1950's by D. C. Grahame at Amherst College, Massachusetts. The central aspect of the study of an electrode reaction is the elucidation of its path and rate-determining step. Two fields are, however, prerequisites for such studies. First, it must be known what species are in the bulk of the solution, for these will seldom be simple ones such as H30~ and this study ("complex ions") has been made with both extent and depth. Second, the occupancy of the surface of the electrocatalyst and the associated field gradients must be known as a function of position in the double layer. Such "maps of the double layer" can be given with reasonable certainty up to concentrations of about 1 N for mercury in contact with solutions of inorganic ions. However, this is-or was until very recently-the extent of the know ledge. The problems confronting a fundamental approach to the rational development of, e.g., fuel cell catalysis were therefore considerable.
Author: Eliezer Gileadi
Publisher: Springer Science & Business Media
ISBN: 1468417312
Category : Science
Languages : en
Pages : 234
Get Book Here
Book Description
The gradual emergence during the last decade of the study of the mechanism of electrode reactions from the dark ages has given stimulus to a consideration of the double layer at metal-solution interfaces, which extends far outside the classical experimental studies of the capacitance of the mercury solution interface made during the 1950's by D. C. Grahame at Amherst College, Massachusetts. The central aspect of the study of an electrode reaction is the elucidation of its path and rate-determining step. Two fields are, however, prerequisites for such studies. First, it must be known what species are in the bulk of the solution, for these will seldom be simple ones such as H30~ and this study ("complex ions") has been made with both extent and depth. Second, the occupancy of the surface of the electrocatalyst and the associated field gradients must be known as a function of position in the double layer. Such "maps of the double layer" can be given with reasonable certainty up to concentrations of about 1 N for mercury in contact with solutions of inorganic ions. However, this is-or was until very recently-the extent of the know ledge. The problems confronting a fundamental approach to the rational development of, e.g., fuel cell catalysis were therefore considerable.
Author: Murat Eyvaz
Publisher: BoD – Books on Demand
ISBN: 1789237580
Category : Science
Languages : en
Pages : 426
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Book Description
The need for fresh water is increasing with the rapid growth of the world's population. In countries and regions with available water resources, it is necessary to ensure the health and safety of the water supply. However, in countries and regions with limited freshwater resources, priority is given to water supply plans and projects, among which the desalination strategy stands out. In the desalination process, membrane and thermal processes are used to obtain fresh water from salty water that is in abundant amounts in the sea. This book will outline valuable scientific contributions to the new desalination and water treatment technologies to obtain high quality water with low negative environmental impacts and cost. The editors would like to record their sincere thanks to the authors for their contributions.
Author: C E Harland
Publisher: Royal Society of Chemistry
ISBN: 1847551181
Category : Science
Languages : en
Pages : 304
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Book Description
Ion Exchange, 2nd Edition is a totally revised and updated version of the highly popular Monograph for Teachers, first published by The Royal Society of Chemistry in 1975. It covers the practical application of ion exchange and the synthesis of organic ion exchange resins, which have spanned nearly 60 years of development since the pioneering work of Adams and Holmes in 1935. This book covers the theory, development, and application in considerable detail and describes the history of development of ion exchange materials and the advances in their utilization in industrial processes. Key applications in such areas as water purification, hydrometallurgy, and chromatography are described and supported by chapters on the related scientific fundamentals governing equilibria and kinetics of ion exchange. Twenty-two experiments using inexpensive equipment are detailed, which not only complement a chapter dedicated to the characterization of organic exchangers, but also serve to illustrate several other pure and applied principles related to ion exchange phenomena. It is anticipated that the unique inclusion of experiments and the broad coverage of the whole text should appeal to a wide readership and offer particular relevance to practitioners in schools, colleges, and industry.
Author: Mika Sillanpää
Publisher: Butterworth-Heinemann
ISBN: 0128114630
Category : Technology & Engineering
Languages : en
Pages : 310
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Book Description
Electrochemical Methods for Water Treatment: Fundamentals, Methods and Full Scale Applications covers all traditional, emerging and combined methods currently available for the treatment of surface, drinkable water and industrial wastewater. Topics covered include an overview of pollutants and treatment methods, an extended introduction to electrochemical processes in water treatment, electrochemical oxidation (including electrodesinfection, electrochemical reduction, electrocoagulation, electroflotation, and electrodialysis. In addition, emerging and combined methods are presented, as is a discussion on the available equipment necessary to scale up the operation of all methods. Electrochemical technologies have many common issues in terms of design, operation and performance. This book brings together a wealth of information on all different methods in a single source to provide broad insights and enable the connection between challenges and opportunities for different methods. The combination of technical information, design and case studies offered helps researchers better understand the challenges associated with scale up and implementation. - Covers all electrochemical methods for water treatment - Includes methods for the treatment of surface, drinking water and industrial wastewater - Presents discussions on equipment in the context of scaling up the operation
Author: Jochen Bundschuh
Publisher: CRC Press
ISBN: 0415407710
Category : Science
Languages : en
Pages : 784
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Book Description
Groundwater resources naturally contain high levels of arsenic in many parts of the world. Over the last two decades, the As-containing groundwater in South-East Asia has received much attention, but the situation is just as crucial in Latin America, where the number of studies is still relatively low, and the extent and severity of As-exposure in the populations has yet to be fully evaluated. This book aims to promote knowledge of the occurrence and genesis of As-rich groundwater in Latin America. It deals with constraints on the mobility of As in groundwater, As-uptake from soil and water by plants, As-propagation through the food chain, human health impacts, and As-removal technologies. Case studies are presented from Argentina, Bolivia, Chile, Ecuador, El Salvador, Mexico, Nicaragua and Peru, amongst others, and are viewed against the background of experience from other world regions. The book is a state-of-art overview of arsenic research in Latin America. It aims to create interest within the Latin American countries affected by the presence of arseniferous aquifers and to increase awareness among administrators, policy makers and company executives. It will also serve to inform the international scientific community, and improve international cooperation on arsenic in groundwater.
Author: Sabu Thomas
Publisher: Elsevier
ISBN: 0128139277
Category : Science
Languages : en
Pages : 892
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Book Description
Novel nanoscale materials are now an essential part of meeting the current and future needs for clean water, and are at the heart of the development of novel technologies to desalinate water. The unique properties of nanomaterials and their convergence with current treatment technologies present great opportunities to revolutionize water and wastewater treatment. Nanoscale Materials for Water Purification brings together sustainable solutions using novel nanomaterials to alleviate the physical effects of water scarcity. This book covers a wide range of nanomaterials, including noble metal nanoparticles, magnetic nanoparticles, dendrimers, bioactive nanoparticles, polysaccharidebased nanoparticles, nanocatalysts, and redox nanoparticles for water purification. Significant properties and characterization methods of nanomaterials such as surface morphology, mechanical properties, and adsorption capacities are also investigated - Explains how the unique properties of a range of nanomaterials makes them important water purification agents - Shows how the use of nanotechnology can help create cheaper, more reliable, less energy-intensive, more environmentally friendly water purification techniques - Includes case studies to show how nanotechnology has successfully been integrated into water purification system design
Author: H Strathmann
Publisher: Elsevier
ISBN: 0080509401
Category : Technology & Engineering
Languages : en
Pages : 361
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Book Description
Today, membranes and membrane processes are used as efficient tools for the separation of liquid mixtures or gases in the chemical and biomedical industry, in water desalination and wastewater purification. Despite the fact that various membrane processes, like reverse osmosis, are described in great detail in a number of books, processes involving ion-exchange membranes are only described in a fragmented way in scientific journals and patents; even though large industrial applications, like electrodialysis, have been around for over half a century. Therefore, this book is emphasizing on the most relevant aspects of ion-exchange membranes. This book provides a comprehensive overview of ion-exchange membrane separation processes covering the fundamentals as well as recent developments of the different products and processes and their applications. The audience for this book is heterogeneous, as it includes plant managers and process engineers as well as research scientists and graduate students. The separate chapters are based on different topics. The first chapter describes the relevant Electromembrane processes in a general overview. The second chapter explains thermodynamic and physicochemical fundamentals. The third chapter gives information about ion-exchange membrane preparation techniques, while the fourth and fifth chapter discusses the processes as unit operations giving examples for the design of specific plants. - First work on the principles and applications of electrodialysis and related separation processes - Presently no other comprehensive work that can serve as both reference work and text book is available - Book is suited for teaching students and as source for detailed information
Author: Satinder Ahuja
Publisher: Elsevier
ISBN: 0128147911
Category : Technology & Engineering
Languages : en
Pages : 442
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Book Description
Advances in Water Purification Techniques: Meeting the Needs of Developed and Developing Countries provides a variety of approaches to water purification that can help assist readers with their research and applications. Water contamination problems occur frequently worldwide, hence the most updated knowledge on water purification systems can be helpful in employing the right type of filter or other mechanism of decontamination. The problems with arsenic contamination of water in Bangladesh and the lead problem in Flint, Michigan remind us of the need to monitor water pollution rigorously, from both point and non-point sources. - Provides a valuable resource on how to solve water contamination problems or develop new approaches to water purification - Presents advanced methods for monitoring water contamination - Describes various approaches to water purification - Encourages new developments in water purification techniques - Includes methods for assessing and monitoring environmental contaminants - Covers recent advancement in molecular techniques
Author: Patricia Luis
Publisher: Elsevier
ISBN: 0128134844
Category : Science
Languages : en
Pages : 374
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Book Description
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
Author: Zhiwei Wang
Publisher: Elsevier
ISBN: 0323859879
Category : Technology & Engineering
Languages : en
Pages : 486
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Book Description
Electrochemical membrane technology has drawn extensive attention worldwide during the past decade in water and wastewater treatment. Coupling electrochemical process with membrane technology not only enables a higher removal or decomposition of pollutants in waters, but also ensures a more effective control of membrane fouling as well as a more highly selective separation process. The recent development of electrochemical membrane technology has also extended its applications in desalination, energy harvest, and resource recovery from seawater and wastewaters. Electrochemical Membrane Technology for Water and Wastewater Treatment consolidates state-of-the-art research developments in electrochemical membrane technology in water reclamation and sustainability in terms of fundamental theories, membrane and electrode materials, reactor designs, fouling control mechanisms and applications. Electrochemical Membrane Technology for Water and Wastewater Treatment also introduces fundamental theories and applications of electrochemical membrane technology. The knowledge gaps and future research perspectives in electrochemical membrane technology are also addressed. This book is an excellent resource for the understanding of fundamental theories, latest developments and future prospects in electrochemical membrane technology, which can benefit a broad audience of researchers and engineers working in water purification, membrane technology and electrochemical process. - Consolidates scattered knowledge of electrochemical membrane technology into a more accessible resource - Provides a comprehensive review of fundamental theories, membrane materials and module design as well as the latest developments of electrochemical membrane technology - Provides the state-of-art review on the applications of electrochemical membrane technology - Includes detailed discussion on the challenges and prospects of electrochemical membrane technology in different applications
