Search Results

You are looking at 1 - 10 of 6,670 items :

  • "mass transfer" x
Clear All

Z. Phys. Chem. 224 (2010) 1297–1336 . DOI 10.1524.zpch.2010.5477 © by Oldenbourg Wissenschaftsverlag, München Review paper Mass Transfer to Microelectrodes and Arrays By C. A. C. Sequeira* and D. M. F. Santos Materials Electrochemistry Group, Instituto Superior Técnico, TU Lisbon, 1049–001 Lisboa, Portugal (Received April 10, 2010; accepted May 17, 2010) Microelectrodes and Arrays . Mass Transfer Equations . Diffusion Equation . Laplace Transform and Convolution . Discrete Methods . Weighed Residuals and Collocation . Finite Element Methods The properties and

1 Introduction Liquid-liquid mixing has been the subject of many industrial applications dealing with mass transfer such as solvent extraction, emulsification, multiphase reactions, distillation, humidification, liquid-liquid extraction, adsorption, and ion exchange. In general, mixing can be accomplished by mechanical agitation, rotor-stator mixer, static mixer, gas sparging, pumped circulation, and extraction columns. Among these mixing facilities, the mechanical agitation system has proved to be the most efficient mixing device in terms of average velocity

1 Introduction The sieve tray column is one of the widely word separation equipment in chemical and petrochemical industries. These columns are commonly applied in processes which involve the mass transfer between the liquid and vapor phases such as distillation and absorption. Although many researchers investigated the behavior of the sieve trays; the complex systematic interactive behaviors of flow and mass transfer inside the trays are not totally determined yet. One of these limitations is the prediction of the tray efficiency for binary and especially for

References Balster, J., P¨unt, I., Stamatialis, D. F., & Wessling, M. (2006). Multi-layer spacer geometries with improved mass transport. Journal of Membrane Science, 282, 251-361. DOI: 10.1016/j.memsci.2006.05.039. Burns, J. R., & Jachuck, R. J. J. (2005). Determination of liquid-solid mass transfer coefficients for a spinning disc reactor using a limiting current technique. International Journal of Heat and Mass Transfer, 48, 2540-2547. DOI: 10.1016/j.ijheatmasstransfer.2004.11.029. Doan, H. D., Fayed, M. E., & Trass, O. (2001). Measurement of local and overall

Studies on Ozone Mass Transfer with High Dissolved Concentration* Mindong Bai, Xiyao Bai, Zhitao Zhang, Bo Yang, and Xiaojian Zhou Environmental Engineering Research Institute, Dalian Maritime University, Dalian (116026), Liaoning, P. R. China Abstract: A miniaturization equipment for 1.0~3.0 m3/h with the dimension of 0.6 m (Long) x 0.8 m (Wide) x 1.5 m (High) is introduced, which consists of high concentration ozone generator, Mazzi Injector, and gas/liquid dissolving tank. The experimental results indicate that the mass transfer efficiency and dissolved ozone

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING Volume 8 2010 Article A97 Hydrodynamic Behaviour and Mass Transfer Performance of SiC Foam Julien Leveque∗ David Rouzineau† Michel Prevost‡ Michel Meyer∗∗ ∗Institut National Polytechnique de Toulouse, †Institut National Polytechnique de Toulouse, ‡Institut National Polytechnique de Toulouse, ∗∗Institut National Polytechnique de Toulouse, ISSN 1542-6580 Hydrodynamic Behaviour and Mass Transfer Performance

ISSN 1203-8407 © 2007 Science & Technology Network, Inc. J. Adv. Oxid. Technol. Vol. 10, No. 2, 2007 287 Mass Transfer of Ozone in a Hybrid Ozonation-Membrane System Kuan-chung Chen1, Simon H. Davies, and Susan J. Masten2 Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA Abstract: The volumetric mass transfer coefficient (KLa) for ozone was determined for various operational conditions in a novel ozonation-ceramic membrane system. Four operational parameters, water flow rate, gas flow

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING Volume 8 2010 Article A116 Mass Transfer Studies in a Novel Perforated Plate Bubble Column S. Dhanasekaran∗ T. Karunanithi† ∗Annamalai University, †Annamalai University, ISSN 1542-6580 Mass Transfer Studies in a Novel Perforated Plate Bubble Column∗ S. Dhanasekaran and T. Karunanithi Abstract This investigation reports the experimental and theoretical results carried out to evaluate the volumetric mass transfer coefficient (kLa) in a novel hybrid rotat- ing and

predictions [ 1 , 2 ]. Simplified analytical models require less input data and are easier to use. In the prediction of moisture history in a solid, accurate value for convective mass transfer coefficients and effective diffusivities will lead to satisfactory agreement between model results and experimental values. Dincer and Dost [ 3 ] have developed an analytical model for unidirectional moisture diffusion in solids. Their starting point was the infinite series solution for the centerline moisture content for unsteady state, unidirectional diffusion in solids with simple

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING Volume 3 2005 Article A20 Hydrodynamic and Mass Transfer Parameters in Agitated Reactors Part II: Gas-Holdup, Sauter Mean Bubble Diameters, Volumetric Mass Transfer Coefficients, Gas-Liquid Interfacial Areas, and Liquid-Side Mass Transfer Coefficients Romain Lemoine∗ Badie I. Morsi† ∗University of pittsburgh, †University of Pittsburgh, ISSN 1542-6580 Copyright c©2005 by the authors. All rights reserved. Hydrodynamic and Mass Transfer Parameters in Agitated Reactors Part