Download or read book Correlation of Fixed bed Ion Exchange Data written by Roger N. Saleeby and published by . This book was released on 1950 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ternary Ion Exchange in Fixed Beds written by David W. H. Roth and published by . This book was released on 1985 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model was developed to simulate ion exchange within fixed beds for ternary systems. Models of the fluid phase material balance, phase equilibria, and diffusion of ions through the film and within the resin phase incorporated the latest advances in ion exchange theory. The separate model elements were combined after testing into an overall general model. Non-linear regression support programs were developed to estimate equilibrium parameters and resin phase diffusion coefficients. A computer program was developed to estimate axial dispersion coefficients from experimental data. General correlations derived from literature sources were tested, and axial dispersion terms were included in the electrolyte phase material balance equations. The rational thermodynamic equilibrium constant, utilizing resin phase activity coefficients based on the 3 suffix Redlich-Kister equation and the Bromley equation for electrolyte phase activity coefficients, was selected. The Wilson and NRTL equations were tested but were not as good. This model was used to correlate published data on 13 binary systems and to predict ternary compositions for comparison to published data on 4 ternary systems. Average root mean square of % normalized difference was about 3% on the binary systems and 4-12% on data predicted for the ternary systems. The Nernst-Planck equation was used to model resin phase diffusion. An integrated form of the Nernst-Hartley equation, based on the Bromley equation, was developed and tested to predict the effect of concentration on electrolyte phase diffusion coefficients. These coefficients were used in a pseudo electric field model which was developed and tested to approximate the electric field effect on diffusion of ions in the film. The overall ternary system model resulted in four coupled non-linear second order parabolic partial differential equations, with appropriate boundary conditions. The equations were reduced to a set of algebraic equations by finite difference approximations and solved by the implicit Crank-Nicholson method. Non-linear terms were quasilinearized. The resulting five diagonal coefficient matrix describing the fluid phase, coupled with the 7 diagonal coefficient matrices describing the resin phase, were inverted with algorithms developed in this work. An iterative procedure resolved all nonlinear terms at each time step. Comparison of concentration histories generated by the model with experimental results obtained by previous researchers showed that the ternary model could be used in practice to optimize process design applications with a bed in a condition of partial presaturation, and for favorable or unfavorable ion exchange. Resin phase activity coefficients developed in correlation of the equilibrium data were used to test chemical potential as a driving force in the systems simulated. Indication that use of chemical potential would obviate the need for ion pair specific diffusion coefficients in the Nernst-Planck model, or the use of ion pair corrector coefficients (Stefan-Maxwell), is shown by comparison of results on seven binary systems. Implications for industrial application and directions for further research are discussed.
Download or read book Ion exchange with Equilibrium and Decay written by P. Cohen and published by . This book was released on 1961 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Continuous Countercurrent Ion Exchange with Trace Components written by and published by . This book was released on 1953 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adsorption Dialysis and Ion Exchange written by American Institute of Chemical Engineers and published by . This book was released on 1959 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Ion Exchange Technology written by M.J. Slater and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book A study of equilibrium mass transfer and fixed bed dynamic phenomena in recovery separation and purification of amino acids by ion exchange written by Giorgio Carta and published by . This book was released on 1990 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annular Fixed bed Ion exchange Studies written by G. A. Nicholson and published by . This book was released on 1959 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering and Economic Evaluation of Countercurrent and Fixed Bed Ion Exchange Processes written by Nevin K. Hiester and published by . This book was released on 1953 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange and Solvent Extraction written by Arup K. SenGupta and published by CRC Press. This book was released on 2004-03-01 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the sustained and diverse experimental momentum in the field of ion exchange, Volume 16 summarizes revolutionary advances on par with the consistently high-level research related by this series. This text discusses the kinetics, theoretical models, experimental results/supporting data, and applications for isothermal supersaturation, metal separation via pH-induced parametric pumping, and for ultrapure water (UPW). Topics also include the engineering of activated carbons and carbonaceous materials for removal of metal ions; hydrophobic ionizable organic compounds (HIOCs); the sorption/desorption mechanisms of organic micropollutants in water; and ion exchange process variables on perchlorate treatment.
Download or read book Handbook of Separation Process Technology written by Ronald W. Rousseau and published by John Wiley & Sons. This book was released on 1987-05-13 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveys the selection, design, and operation of most of the industrially important separation processes. Discusses the underlying principles on which the processes are based, and provides illustrative examples of the use of the processes in a modern context. Features thorough treatment of newer separation processes based on membranes, adsorption, chromatography, ion exchange, and chemical complexation. Includes a review of historically important separation processes such as distillation, absorption, extraction, leaching, and crystallization and considers these techniques in light of recent developments affecting them.
Download or read book Heat and Mass Transfer in Packed Beds written by Noriaki Wakao and published by Taylor & Francis. This book was released on 1982 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1982. Routledge is an imprint of Taylor & Francis, an informa company.
Download or read book RATES OF ION EXCHANGE IN THE SODIUM POTASSIUM DOWEX 50 SYSTEM written by ANDREW DOMINIC SUJATA and published by . This book was released on 1952 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Exchange at the Millennium written by J. A. Greig and published by World Scientific. This book was released on 2000 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IEX series of conferences, which cover all aspects of the theory and use of ion exchange materials, are held on a four-year cycle at Cambridge University. They are now regarded as one of the most important forums for the state-of-the-art presentation, review and discussion of advances made in the science and application of ion exchange in the world. The papers presented at IEX 2000 include those on ion exchange theory and those covering its application to topics as diverse as environmental and pollution control, nuclear industry, hydrometallurgy, water treatment and resin developments.
Download or read book Ion Exchange Technology I written by Inamuddin Dr. and published by Springer Science & Business Media. This book was released on 2012-06-02 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ion-exchange Technology I: Theory and Materials describes the theoretical principles of ion-exchange processes. More specifically, this volume focuses on the synthesis, characterization, and modelling of ion-exchange materials and their associated kinetics and equilibria. This title is a highly valuable source not only to postgraduate students and researchers but also to industrial R&D specialists in chemistry, chemical, and biochemical technology as well as to engineers and industrialists.
Download or read book Chemical Engineering Progress Symposium Series written by and published by . This book was released on 1959 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical and Catalytic Reaction Engineering written by James J. Carberry and published by Courier Corporation. This book was released on 2001-01-01 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed to give chemical engineers background for managing chemical reactions, this text examines the behavior of chemical reactions and reactors; conservation equations for reactors; heterogeneous reactions; fluid-fluid and fluid-solid reaction systems; heterogeneous catalysis and catalytic kinetics; diffusion and heterogeneous catalysis; and analyses and design of heterogeneous reactors. 1976 edition.
