2 edition of Multicomponent mass transport in aqueous and membrane systems found in the catalog.
Multicomponent mass transport in aqueous and membrane systems
George B. Wills
by Virginia Polytechnic Institute, Water Resources Research Center in Blacksburg
Written in English
Bibliography: p. 29-31.
|Statement||[by] George B. Wills.|
|LC Classifications||TD201 .V57 no. 11|
|The Physical Object|
|Number of Pages||31|
|LC Control Number||a 68007611|
A MPL serves to protect the membrane from being penetrated by the carbon fibers of the macroporous GDL, as well as provide discrete locations of water injection into the GDL. – This decreases the water accumulation near the cathode and hence decreases oxygen mass-transport by: Separation Of SO[sub 2] and NO from a simulated gas mixture using the hollow fiber contained liquid membrane (HFCLM) technique has been explored. Separation Of SO[sub 2] from a gas mixture containing SO[sub 2], CO[sub 2], O[sub 2], and N[sub 2] has been studied with pure water and aqueous 1 N NaHSO[sub 3] solution.
The performance correlations for the effectiveness of heat and moisture transfer processes in an enthalpy exchanger with membrane cores are presented. The physical phenomena relevant to the heat and moisture transfer in these devices have been used to develop a novel set of correlations based on the relevant dimensionless by: α helix. see alpha helix. ABC transporter proteins. Large superfamily of membrane transport proteins that use the energy of hydrolysis of ATP to transfer peptides and a variety of small molecules across membranes.. acetyl. Chemical group derived from acetic groups are important in metabolism and are added covalently to some proteins as a posttranslational .
Mass Transport in Micellar Systems Mass Transport Phenomena in Emulsions Containing Surfactants Mechanistic Models for Adsorption Reactions at Iron (Hydr)Oxide Surfaces Membranes: Commercial Applications Membranes for Hemodialysis Membranes in Electroanalytical Chemistry: Membrane-Based Chemical and Biosensors Membranes: . Ribeiro, C.P., B.D. Freeman, and D.R. Paul, “Modeling of Multicomponent Mass-Transfer Across Polymer Films Using a Thermodynamically Consistent Formulation of the Maxwell-Stefan Equations in Terms of Volume Fractions,” Polymer, 52(18), (). DOI.
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Multi-component mass transfer behavior in catalytic membrane reactors Article in Chemical Engineering Science –54 September with 39 Reads How we measure 'reads'. The electrical field affects only charged molecules or ions.
In the case of multicomponent mixtures, fluxes cannot be described by simple phenomenological equations because the driving forces and fluxes are coupled. This chapter describes mass transport through a membrane layer.
Multicomponent Diffusion discusses the multicomponent diffusion of the three phases of matter. The book is comprised of nine chapters that cover studies of multicomponent diffusion and mass transfer with an emphasis on the chemical characteristics responsible for multicomponent diffusion.
Chapter 1 provides an introductory discourse about multicomponent. Transport of multicomponent, multivalent electrolyte solutions across nanocapillaries Article in Microfluidics and Nanofluidics 20(4) April with 35 Reads How we measure 'reads'. In particular, the membrane transport theory of Mason and Viehland characterizes the membrane as a spatially-fixed single component of a multicomponent mixture and arrives at a species transport equation containing, among other terms, a Darcy-type viscous term [see their equation ].
This model is reconciled with a variety of other transport Cited by: 1. Mass Transfer in Multicomponent Mixtures J.A. Wesselingh, R. Krishna. Text book on the basic concepts of designing chemical reactors and separation units. Year: Publisher: VSSD Language: english Pages: ISBN ISBN You can write a book review and share your experiences.
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Multicomponent Mass Transfer (Wiley Series in Chemical Engineering) Ross Taylor R. Krishna Basic Equations of the Mass Transport through a Membrane Layer. Elsevier. Endre Nagy. membrane mass layer mass transfer transport concentration membrane layer diffusion mass transport rate equations.
Scientific Computing in Chemical Engineering II gives the state of the art from the point of view of numerical mathematicians as well as that of engineers.
The present volume as part of a two-volume edition covers topics such as the simulation of reactive flows, reaction engineering, reaction diffusion problems, and molecular properties. Removal of heavy metals from wastewater is of critical importance due to their high toxicity and tendency to accumulate in living organisms.
In the present work, performance of a nanofiltration (NF) membrane has been studied to separate cadmium and nickel ions from multicomponent aqueous solutions at different operating conditions.
It is observed that the separation of Cited by: History. Inphysiologist Adolf Fick first reported his now well-known laws governing the transport of mass through diffusive means. Fick's work was inspired by the earlier experiments of Thomas Graham, which fell short of proposing the fundamental laws for which Fick would become 's law is analogous to the relationships discovered at the same epoch by other.
Transport phenomena in an ion-exchange membrane containing both H+ and K+ are described using multicomponent diffusion equations (Stefan-Maxwell). A model is developed for transport through a Nafion membrane in a hydrogen-pump setup. The model results are analyzed to quantify the impact of cation contamination on cell potential.
Chapter 6 Conservation Equations for Multiphase-Multicomponent Flow Through Porous Media. The mass conservation equations will appear repeatedly in many different forms when different displacement processes are considered. The basic mass conservation principle is general and will be derived just once here and specialFile Size: KB.
A new model for calculating the viscosity of aqueous solutions has been developed. Parameters for 74 solutes were established based on a critical review of the literature for solutions of one solute in water, with over points included. The average difference between the calculated and experimental viscosities is less than %, and the standard deviation of this difference is Cited by: " Theory of Multicomponent Phenomena in Cation-Exchange Membranes: Part III.
Transport in Vanadium Redox-Flow-Battery Separators." Journal of. Principles of Mass Transfer (CHAPTER 4) Molecular Diffusion in Solids EXAMPLE The gas hydrogen at 17 C and atm pa pressure is diffusing through a membrane of vulcanized neoprene rubber mm thick.
Th pressure of H2 on the other side of the neopr is zero. Encyclopedia of Surface and Colloid Science, Volume 5. Somasundaran. CRC Press, - Science - pages. 0 Reviews. Preview this book. Conde, Julio J, M. Antonia Folgado, P. Ferreira-Aparicio, Antonio M Chaparro, Anamika Chowdhury, Ahmet Kusoglu, David Cullen, and Adam Z Weber.
" Mass-transport properties of electrosprayed Pt/C catalyst layers for polymer-electrolyte fuel cells." Journal of Power Sources () - Water and methanol transport behavior, solvents adsorption and electrochemical properties of filler-free Nafion and nanocomposites based on two smectite clays, were investigated using impedance spectroscopy, DMFC tests and NMR methods, including spin-lattice relaxation and pulsed-gradient spin-echo (PGSE) diffusion under variable temperature by: Facilitated transport membranes are particularly promising in different separations, as they are potentially able to overcome the trade-off behavior usually encountered in solution-diffusion membranes.
The reaction activated transport is a process in which several mechanisms take place simultaneously, and requires a rigorous theoretical analysis, which unfortunately is often Cited by: 7.
In this chapter are described the characteristics of transport of hydroxide ions through hydrated polymeric materials with potential application in alkaline fuel cells are described. First, it is made a brief description of anion-exchange membrane fuel cells (AEMFCs), their evolution and key characteristics.
Then, this chapter presents a detailed classification of the different types of Cited by: 1.A numerical and experimental study of the monocomponent and multicomponent adsorption and desorption of BTX compounds (benzene, toluene, and o-xylene) in a batch reactor and fixed-bed column was carried out in aqueous solution at 23 °C, using coconut shell activated carbon as the adsorbent.
The monocomponent Langmuir isotherm model best represented the experimental Cited by: Certain potentially unfavorable aspects of aqueous-based deacidification appear to have provided the main motivation for widespread adoption of non-aqueous deacidification systems.
For instance, if a book is dropped into a sink of water, the paper can become wavy (Brückle and Banik b) and a lengthy drying period may be needed (Smith ).