Mass Transfer and Kinetics of Ion Exchange

Mass Transfer and Kinetics of Ion Exchange PDF Author: L. Liberti
Publisher: Springer Science & Business Media
ISBN: 940096899X
Category : Science
Languages : en
Pages : 461

Get Book Here

Book Description
While ion-exchange processes were originally used for the treatment of very dilute solutions, many applications for the treatment of concentrated solu tions have been developed in recent years. In these situations, the mass transfer bottlenecks are located in the~, rather than the liquid phase. Therefore, the development of quantitative models for ion-exchange kinetics requires knowledge about the conductance characteristics of ions and solvent in the solid phase. A useful approach towards this aim is the study of trans port characteristics of these species, and of their interactions in solid ion exchange membranes. Many different transport processes and related phenomena can be observed in membrane-solution systems, e.g., ion migration, electroosmosis, diffusion arid self-diffusion, osmosis, hydraulic flow, hyperfiltration (reverse osmosis) or ultrafiltration, streaming potential and streaming current, and membrane potentials (also called "membrane concentration potentials"). It is important to correlate all these phenomena so as to avoid a very large number of unnec essary measurements. Such correlation is often possible [Meares, 1976] since all these phenomena are determined by the ease of migration of the different species across the membrane. Important correlations have been made and summar ized even before high-capacity ion-exchange membranes became commercially available [Sollner, 1950, 197iJ.

Mass Transfer and Kinetics of Ion Exchange

Mass Transfer and Kinetics of Ion Exchange PDF Author: L. Liberti
Publisher: Springer Science & Business Media
ISBN: 940096899X
Category : Science
Languages : en
Pages : 461

Get Book Here

Book Description
While ion-exchange processes were originally used for the treatment of very dilute solutions, many applications for the treatment of concentrated solu tions have been developed in recent years. In these situations, the mass transfer bottlenecks are located in the~, rather than the liquid phase. Therefore, the development of quantitative models for ion-exchange kinetics requires knowledge about the conductance characteristics of ions and solvent in the solid phase. A useful approach towards this aim is the study of trans port characteristics of these species, and of their interactions in solid ion exchange membranes. Many different transport processes and related phenomena can be observed in membrane-solution systems, e.g., ion migration, electroosmosis, diffusion arid self-diffusion, osmosis, hydraulic flow, hyperfiltration (reverse osmosis) or ultrafiltration, streaming potential and streaming current, and membrane potentials (also called "membrane concentration potentials"). It is important to correlate all these phenomena so as to avoid a very large number of unnec essary measurements. Such correlation is often possible [Meares, 1976] since all these phenomena are determined by the ease of migration of the different species across the membrane. Important correlations have been made and summar ized even before high-capacity ion-exchange membranes became commercially available [Sollner, 1950, 197iJ.

Principles of Ion Exchange Technology

Principles of Ion Exchange Technology PDF Author: M.J. Slater
Publisher: Butterworth-Heinemann
ISBN: 1483278298
Category : Technology & Engineering
Languages : en
Pages : 197

Get Book Here

Book Description
The Principles of Ion Exchange Technology covers the fundamental properties of ion exchange resins and the chemical engineering principles of plant design to aid process and equipment evaluation, choice and design. This text is composed of 12 chapters and begins with a discussion of the equilibrium concept and the calculation of diffusion coefficients and mass transfer coefficients, as well as the rate constants in ion exchange. The succeeding chapters deal with the kinetics of ion exchange in solution and in resin beads. These topics are followed by reviews of axial mixing, flow abnormalities, design equations, fixed bed performance calculation, and multi-component ion exchange. The final chapters explore the choices of continuous and countercurrent design techniques and the practical procedures for packed beds. This book is of great value to chemical engineers.

Adsorption, Ion Exchange and Catalysis

Adsorption, Ion Exchange and Catalysis PDF Author: Stavros G. Poulopoulos
Publisher: Elsevier
ISBN: 0080463665
Category : Technology & Engineering
Languages : en
Pages : 615

Get Book Here

Book Description
Adsorption, Ion Exchange and Catalysis is essentially a mixture of environmental science and chemical reactor engineering. More specifically, three important heterogeneous processes, namely, adsorption, ion exchange and catalysis, are analysed, from fundamental kinetics to reactor design with emphasis on their environmental applications. In Chapter 1, the subject of air and water pollution is dealt with. Data about pollutants and emission sources are given and the treatment methods are shortly presented. In Chapter 2, the very basics and historical development of adsorption, ion exchange and catalysis are presented as well as their environmental applications. Chapter 3 is devoted to heterogeneous processes and reactor analysis. All types of reactors are described in depth and reactor modelling, hydraulics and mass/heat transfer phenomena are examined for each type of reactor. Chapters 4 and 5 are dedicated to adsorption & ion exchange and catalysis, respectively. The basic principles are presented including kinetics, equilibrium, mass/heat transfer phenomena as well as the analytical solutions of the reactor models presented in Chapter 3. In the sixth chapter, the subject of scale up is approached. The two Annexes at the end of the book contain physical properties of substances of environmental interest as well as unit conversion tables. Finally, nearly all the examples contained are based on real experimental data found in literature with environmental interest. Most of the examples consider all aspects of operation design – kinetics, hydraulics and mass transfer.* Provides basic knowledge of major environmental problems and connects them to chemical engineering

Ion Exchange in Analytical Chemistry

Ion Exchange in Analytical Chemistry PDF Author: William Rieman
Publisher: Elsevier
ISBN: 1483186512
Category : Science
Languages : en
Pages : 312

Get Book Here

Book Description
Analytical Chemistry, Volume 38: Ion Exchange in Analytical Chemistry provides a broad survey of the important role that ion exchange can and should play in chemical analysis. This book focuses on the plate-equilibrium theory of chromatography, which is less difficult theoretically than the mass-transfer theory. Organized into 11 chapters, this volume begins with an overview of the earliest recorded application of ion exchange. This text then examines how high temperature affects ion-exchange resins. Other chapters consider the exchange of ions between a solid ion-exchanging material and a solution, which is a typically reversible reaction. This book describes as well the relatively simple separations and other applications of ion exchange to analytical chemistry. The final chapter deals with the interesting nature of the metal complexes formed within the exchanger and describe the use of ion-exchange distribution studies to determine the stability and nature of complexes existing in the solution. This book is a valuable resource for analytical chemists.

Mass Transfer

Mass Transfer PDF Author: Marek Solecki
Publisher: BoD – Books on Demand
ISBN: 9535121928
Category : Science
Languages : en
Pages : 292

Get Book Here

Book Description
This book covers a wide variety of topics related to advancements in different stages of mass transfer modelling processes. Its purpose is to create a platform for the exchange of recent observations, experiences, and achievements. It is recommended for those in the chemical, biotechnological, pharmaceutical, and nanotechnology industries as well as for students of natural sciences, technical, environmental and employees in companies which manufacture machines for the above-mentioned industries. This work can also be a useful source for researchers and engineers dealing with mass transfer and related issues.

Ion Exchangers

Ion Exchangers PDF Author: Konrad Dorfner
Publisher: Walter de Gruyter
ISBN: 3110862433
Category : Science
Languages : en
Pages : 1532

Get Book Here

Book Description


Ion Exchange Materials: Properties and Applications

Ion Exchange Materials: Properties and Applications PDF Author: Andrei A. Zagorodni
Publisher: Elsevier
ISBN: 0080467539
Category : Technology & Engineering
Languages : en
Pages : 495

Get Book Here

Book Description
Ion Exchange Materials: Properties and Applications fills a "two-dimensional" gap in books currently available on the subject. Firstly, there is a lack of modern comprehensive publications on the chemistry of ion exchange materials and on the relationships between their properties and practical applications. Secondly, there are few books on ion exchange chemistry that are targeted to industrial R&D specialists and research students who (i) do not work with ion exchange on a daily basis, (ii) need to develop competence in this area, and (iii) find it difficult to start studying the subject from primary scientific publications. The book bridges these gaps by describing classical and modern theoretical concepts, as well as practical approaches for using ion exchange materials. Ion exchange materials combine properties of homogeneous and heterogeneous materials. Besides being an interesting subject for investigation, they are essential in a wide variety of industrial technologies: in the chemical and biochemical industries, pharmacy, medicine, microelectronics, the nuclear industry, food production, waste treatment, and many other areas. Ion exchange is a powerful tool in chemical analysis and scientific research. The main focus in this book is on ion exchange polymers: ion exchange resins, chelating resins, imprinted (templated), and other functional polymers. It provides an in-depth study of ion exchange materials, suitable for postgraduate students and R&D industrial specialists in chemistry, chemical and biochemical technology. - Comprehensively covers the subject - Provides links between theoretical concepts, material properties, practical applications, and technical solutions - Easy to understand - requires only ground knowledge of university-level chemistry and can be read without an in-depth knowledge of mathematics - Supported with an interactive website

Ion-Exchange Sorption and Preparative Chromatography of Biologically Active Molecules

Ion-Exchange Sorption and Preparative Chromatography of Biologically Active Molecules PDF Author: G.V. Samsonov
Publisher: Springer Science & Business Media
ISBN: 1468489089
Category : Science
Languages : en
Pages : 175

Get Book Here

Book Description
This book deals with the physico-chemical principles underlying ion exchange sorption and chromatog~aphy. It does not cover in any detail the experimental and instrumental aspects of practical separations. The author has developed the subject starting from the synthesis and structure of the ion exchangers employed, through the thermodynamics of sorption selectivity and the equilibrium dynamics of ion sorption, to the kinetics and dynamics of non-equilibrium ion-exchange systems. Throughout this treatment the additional factors arising from the exchange of complex organic ions, as opposed to simple mineral ones, have been interwoven. The author has stressed the application in the separation of organic ions with biological activity, many of which are synthesized in biotechnological processes, and in view of this he uses the expression "physico-chemical biotechnology." In practice, however, his in-depth treatment is applicable to any charged organic species with multifunction ality and/or high molecular weight, and is therefore by no means restricted to biologically active materials, and certainly not to those molecules from a biotechnological source. Bearing this in mind, the text has a much wider value than the title may convey.

Ion Exchange: Science and Technology

Ion Exchange: Science and Technology PDF Author: A.E. Rodrigues
Publisher: Springer Science & Business Media
ISBN: 9400943768
Category : Science
Languages : en
Pages : 607

Get Book Here

Book Description
Proceedings of the NATO Advanced Study Institute on Ion Exchange: Science and Technology, Troía, Portugal, July 14-26, 1985

Ion Exchange and Solvent Extraction

Ion Exchange and Solvent Extraction PDF Author: Jacob A. Marinsky
Publisher: CRC Press
ISBN: 1000445046
Category : Science
Languages : en
Pages : 472

Get Book Here

Book Description
The Ion Exchange and Solvent Extraction series treats ion exchange and solvent extraction both as discrete topics and as a unified, multidisciplinary study - presenting new insights for researchers in many chemical and related fields.;Volume 12 contains coverage of: the nature of metal-ion interaction with oppositely charged sites of ion exchangers; high-pressure ion exchange separation of rare earth elements; the commercial recovery of valuable minerals from seawater and brines by ion exchange and sorption; the kinetics of ion exchange in heterogenous systems; the ion-exchange equilibria of amino acids; and more.;The work is intended for analytical, co-ordination, process, separation, surface, organic, inorganic, physical and environmental chemists, geochemists, electrochemists, radiochemists, biochemists, biophysicists, hydrometallurgists, membrane researchers and chemical engineers.