Download or read book Dynamic Model for Multicomponent Fixed Bed Adsorption written by Howard William Collins and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Behaviour of Multicomponent Mixtures in Fixed Bed Adsorption Column at Elevated Pressures written by Semra Omurlu-Gercek and published by . This book was released on 1987 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book MATHEMATIC MODELING OF FIXED BED ADSORBER DYNAMICS SINGLE COMPONENT AND MULTICOMPONENT written by JOHN CHARLES CRITTENDEN and published by . This book was released on 1976 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Model for the Simulation of Multicomponent Adsorption in a Fixed Bed written by Ba Kim Trinh and published by . This book was released on 1987 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling of Multicomponent Adsorption in Batch and Fixed bed Reactors written by G. Friedman and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Adsorption Calculations and Modelling written by Howard Brenner and published by Elsevier. This book was released on 2013-10-22 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Adsorption Calculations and Modelling' provides readers with practical, useful information about how to make adsorption calculations and formulate models describing adsorption processes. Unlike most books on this subject, this book treats both gas phase adsorption and liquid phase adsorption with equal emphasis, and supplies a rigorous treatment of multi-component adsorption. It also covers adsorption applications in environmental applications including the use of impregnated adsorbents for protection against toxic gases and carbon adsorption in water and wastewater treatment.Explores the most up-to-date information on multicomponent adsorption Details adsorption applications in environmental application Explains the fundamentals of adsorption calculation in a simple, straightforward manner.

Download or read book Modeling Dynamics Optimization and Bioeconomics III written by Alberto A. Pinto and published by Springer. This book was released on 2018-04-25 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research and review papers presented in this volume provide an overview of the main issues, findings, and open questions in cutting-edge research on the fields of modeling, optimization and dynamics and their applications to biology, economics, energy, finance, industry, physics and psychology. Given the scientific relevance of the innovative applications and emerging issues they address, the contributions to this volume, written by some of the world’s leading experts in mathematics, economics and other applied sciences, will be seminal to future research developments and will spark future works and collaborations. The majority of the papers presented in this volume were written by participants of the 4th International Conference on Dynamics, Games and Science: Decision Models in a Complex Economy (DGS IV), held at the National Distance Education University (UNED) in Madrid, Spain in June 2016 and of the 8th Berkeley Bioeconomy Conference: The Future of Biofuels, held at the UC Berkeley Alumni House in April 2015.

Download or read book Mathematical Modeling of Multicomponent Adsorption in Batch and Fixed bed Reactors written by Gary Friedman and published by . This book was released on 1984 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling of Multicomponent Adsorption in Batch and Fixed bed Reactors written by Gary Friedman (Chemical Engineer) and published by . This book was released on 2014 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the increasing need for the ability to predict multicomponent adsorption, the development of the homogeneous surface diffusion model (HSDM) and pore surface diffusion model (PSDM) for multicomponent adsorption in batch and fixed-bed reactors is presented. The models are solved using the method of orthogonal collocation and verified against simplified models. Two multicomponent laboratory column studies are satisfactorily predicted using estimated mass transfer parameters and experimentally determined isotherm parameters. A sensitivity analysis is performed on the models to determine which input parameters have the greatest effect on batch and fixed-bed profiles. Process design considerations are presented which compare the number of bed volumes that can be treated for an adsorbate in a groundwater matrix to the maximum number of bed volumes that can be treated under equilibrium conditions and no mass transfer resistance. Calculations are given for a single adsorber, two adsorbers in series, and a single adsorber which incorporates backwashing.

Download or read book Dynamic Modeling of Transport Process Systems written by C. A. Silebi and published by Elsevier. This book was released on 2012-12-02 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a methodology for the development and computer implementation of dynamic models for transport process systems. Rather than developing the general equations of transport phenomena, it develops the equations required specifically for each new example application. These equations are generally of two types: ordinary differential equations (ODEs) and partial differential equations (PDEs) for which time is an independent variable. The computer-based methodology presented is general purpose and can be applied to most applications requiring the numerical integration of initial-value ODEs/PDEs. A set of approximately two hundred applications of ODEs and PDEs developed by the authors are listed in Appendix 8.

Download or read book Multicomponent Adsorption Dynamics in the Recovery of Acetic and Lactic Acids Using Stratified Fixed beds written by Haripriya Naidu and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Industrial acetic acid production based on anaerobic fermentation technology is not economically viable at present due to the low efficiency and high cost of product recovery by adsorption or extraction at neutral pH conditions. With the recent advances in fermentation technology to produce organic acids at low pH conditions, a detailed study on the adsorption equilibria, kinetics, and dynamics at these conditions is necessary for the design of an efficient recovery scheme. Adsorption equilibria and kinetics of acetic acid at low pH conditions on granular activated carbon (GAC) and weak base resins were studied using batch experiments. A simple nonlinear estimation method and approximations to analytical solutions of adsorption kinetic equations were developed to determine isotherm constants and kinetic parameters respectively. Weak base resins show higher adsorption capacities for the uptake of acetic acid compared to GAC. Multicomponent sorption equilibria of acetic and lactic acids were determined using the Ideal Adsorbed Solution Theory (IAST) model, and extended Langmuir and modified extended Langmuir models. The adsorption of acetic acid is shown to be controlled by both external mass transfer and intraparticle diffusion resistances in GAC and by intraparticle diffusion resistance alone in the weak base resins. The estimated transport coefficients are shown to predict batch adsorption kinetic data well. Adsorption dynamics studies were conducted using single and multicomponent solutions of acetic and lactic acids in fixed-bed adsorbers of different configurations. These studies were conducted to examine potential enhancements to bed capacity utilization and thereby the overall efficiency of the recovery process. Five different configurations, namely, a conventional cylindrical adsorber (CCA), and a tapered bed adsorber with single adsorbent particle size, a stratified cylindrical adsorber with particle sizes increasing in the direction of flow (SCA), a reverse stratified cylindrical adsorber (RSCA), and a reverse stratified convergent tapered adsorber (RSTA) were studied in this research. A general rate model that considers axial dispersion, external mass transfer, pore diffusion, and nonlinear isotherm was developed to predict sorption dynamics in single and multicomponent systems. Model predictions were in good agreement with experimental data. The adsorption dynamics and breakthrough curves for acetic acid were similar in cylindrical and tapered beds when a single adsorbent particle size was used. The solute front becomes dispersive in the SCA and sharpens in the RSTA. Among the different configurations examined, RSTA gave the maximum bed capacity utilization which is 18.4% higher than that obtained using SCA. Multicomponent sorption dynamics of acetic and lactic acids on weak base resins were conducted in RSTA at pH 2.8 and 4.8. At pH 2.8, acetic acid eluted first, while at pH 4.8 lactic acid eluted first. Sensitivity analysis has shown that to achieve 90% bed capacity utilization, two column lengths or double the quantity of adsorbent will be required in the case of SCA when compared to RSTA. The model presented will be useful in the selection of optimum operating conditions to obtain maximum bed capacity utilization, and thereby enhance the economics of the recovery of organic acids from fermentations.

Download or read book Assessment of Potential Energy Savings in Fluid Separation Technologies written by and published by . This book was released on 1984 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Dynamic Column Breakthrough for Multicomponent Adsorption Equilibrium and Diffusion written by Nicholas Stiles Wilkins and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressure and temperature swing adsorption processes are increasingly being designed and optimized computationally. The reliability of these predictions are highly dependent on the quality of the experimental equilibrium and kinetic data used in these simulations. Consistent experimental methodology is fundamental to obtain accurate data. The main aims of this thesis are to provide multicomponent adsorption equilibrium and kinetic data on various adsorbents, to provide recommendations to improve experimental methodology, and finally to use this data for pressure swing adsorption design and optimization. Dynamic column breakthrough is extensively studied in this thesis. This method involves a column packed with an adsorbent of interest that can measure multicomponent equilibrium and kinetics, as well as column dynamics. This thesis examines all three of these aspects in dynamic column breakthrough. A few highlights are described below. The equilibrium loading of each species in a multicomponent mixture can be calculated from a dynamic column breakthrough experiment. This is most commonly done with a ternary gas mixture for a binary equilibrium measurement: the column is initialized with an inert gas (such as helium), and then replaced with a binary mixture of adsorbates. After the experiment is finished, a transient mass balance can be solved to yield an equilibrium loading for each species in the mixture. However, a ternary adsorption breakthrough experiment (two adsorbates and one inert) on a highly selectively system, will often yield erroneous equilibrium data for the weaker component. This is in part due to the measurement of effluent flow, and part due to the long experimental times that accumulate error in the transient mass balance. It was found that a desorption breakthrough experiment, performed after a desired multicomponent adsorption experiment, yielded more accurate data with less associated error for the weaker species. This is due to the relatively short experimental time for the weaker component to desorb, minimizing the accumulation of error in the mass balance. The stronger component can be calculated from the adsorption breakthrough experiment. The combined elution profile yields the binary equilibrium data at a given composition, temperature and total pressure. The error associated with the adsorption mass balance of the weaker component can also be bypassed by performing true binary experiments without an inert (only the two adsorbates of interest). These experiments are performed by saturating the column with one adsorbate of interest, and then performing an adsorption breakthrough experiment with a binary mixed-adsorbate system. This methodology still requires two sets of experiments to obtain a single binary pairing, but avoids error due to roll-up. Dynamic column breakthrough is usually performed with tens to hundreds of grams of adsorbent. This sample size creates a large signal change in the effluent mole flow measurement, reduces loading variation from heterogeneous samples, and minimizes effects due to the extra-column volume. However, nothing in the transient mass balance excludes measurement on milligram sized samples. This thesis provides recommendations to build a milligram-scale dynamic column breakthrough apparatus to obtain accurate and precise unary and binary equilibrium data. While some aspects of milligram-scale experimentation are complicated, overall the milligram-scale operation offered many more benefits. These included shorter experimental times, near-isothermal operation, a much simpler effluent flow calibration, as well as being able to test as-synthesized and crystalline adsorbents. This apparatus was tested with mixtures of dry gases on various adsorbent materials. This thesis provides quantitative data for unary and binary adsorption equilibrium, and qualitative trends for multicomponent kinetics, from dynamic column breakthrough experiments on milligram quantities of adsorbent.

Download or read book Design Simulation and Optimization of Adsorptive and Chromatographic Separations A Hands On Approach written by Kevin R. Wood and published by John Wiley & Sons. This book was released on 2018-07-16 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource to the construction, use, and modification of the wide variety of adsorptive and chromatographic separations Design, Simulation and Optimization of Adsorptive and Chromatographic Separations offers the information needed to effectively design, simulate, and optimize adsorptive and chromatographic separations for a wide range of industrial applications. The authors?noted experts in the field?cover the fundamental principles, the applications, and a range of modeling techniques for the processes. The text presents a unified approach that includes the ideal and intermediate equations and offers a wealth of hands-on case studies that employ the rigorous simulation packages Aspen Adsorption and Aspen Chromatography. The text reviews the effective design strategies, details design considerations, and the assumptions which the modelers are allowed to make. The authors also cover shortcut design methods as well as mathematical tools that help to determine optimal operating conditions. This important text: -Covers everything from the underlying pheonmena to model optimization and the customization of model code -Includes practical tutorials that allow for independent review and study -Offers a comprehensive review of the construction, use, and modification of the wide variety of adsorptive and chromatographic separations -Contains contributions from three noted experts in the field Written for chromatographers, process engineers, ehemists, and other professionals, Design, Simulation and Optimization of Adsorptive and Chromatographic Separations offers a comprehensive review of the construction, use, and modification of adsorptive and chromatographic separations.

Download or read book Experimental Fixed Bed Adsorption Dynamics with Moments Analysis and Serial Cell Model Simulation written by Eugene O'Gorman and published by . This book was released on 1976 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ion Exchange Technology written by Arup K. SenGupta and published by CRC Press. This book was released on 2021-02-27 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive coverage of developments in ion exchange areas which would continue to have major impacts in the general pursuit of pollution control and pollution prevention. Its nine chapters can be split into four different theme areas: trace contaminants removals; new materials; desalination and finally controlling gaseous pollutants. This would have value for practicing engineers, scientists and researchers who are pertaining to ion exchange technology. It would also server the needs of those trying to explore and identify new technologies in the areas of pollution control and pollution prevention.

Download or read book A Two resistance Model for the Dynamic Behavior of a Non isothermal Fixed bed Adsorption System written by Lawrence Gordon Focht and published by . This book was released on 1969 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: