Chemical Engineering & Technology

Cover image for Vol. 36 Issue 3

March, 2013

Volume 36, Issue 3

Pages 367–531

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. You have free access to this content
      Cover Chem. Eng. Technol. 3/2013

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201390006

  2. Editorial Board

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. Editorial Board Chem. Eng. Technol. 3/2013

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201390007

  3. Overview

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. Overview Contents: Chem. Eng. Technol. 3/2013 (page 367)

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201390008

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. You have free access to this content
      Contents: Chem. Eng. Technol. 3/2013 (pages 368–373)

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201390009

  5. Scientific Highlights

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. Scientific Highlights: Chem. Eng. Technol. 3/2013 (pages 374–375)

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201390010

  6. Letters to The Editor

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. Author's Response (pages 376–377)

      L. Medina-Torres

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201340002

  7. Review

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. One-Dimensional Pseudo-Homo-geneous Packed-Bed Reactor Modeling: II. Energy Equation and Effective Thermal Conductivity (pages 379–389)

      A. Srinivasan and C. Depcik

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200472

      Thumbnail image of graphical abstract

      Modeling a packed-bed reactor in one dimension using the assumption of pseudo-homogeneity requires the application of an effective conductivity correlation. Available literature models are summarized for this parameter while describing a methodology to generate chemical kinetic results based only on chemical constituents and not reactor design.

  8. Research Articles

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. Degradation of a Fluorine-Free Perfluorooctane Sulfonate Substitute in Chromium Plating Solutions (pages 390–397)

      N. Wienand, M. Constapel, K. Budde, J. M. Marzinkowski, S. Gäb and O. J. Schmitz

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201200357

      Thumbnail image of graphical abstract

      Oleylamine ethoxylate is examined as a substitute for the surfactant perfluorooctane sulfonate in decorative chromium plating. Mist suppression and plating quality are retained, but oleylamine ethoxylate is degraded and must be replenished. It also leads to increased corrosion of the Pb anodes. The influence of the plating bath components was examined and some of the degradation products were identified.

    2. Role of Emulsifiers in Emulsion Technology and Emulsion Crystallization (pages 398–402)

      S. Petersen and J. Ulrich

      Article first published online: 1 FEB 2013 | DOI: 10.1002/ceat.201200648

      Thumbnail image of graphical abstract

      The influence of emulsifiers in high-pressure homog-enization as an emulsification technique and for the production of solid lipid nanoparticles is described exemplarily for Polysorbate 20 and sodium caseinate. For the emulsification process, Polysorbate 20 was found to be better suited whereas in crystallization sodium caseinate was more advantageous.

    3. Simulation of the Effective Energies and Stresses in a Bulk Cargo Silo (pages 403–410)

      M. Ripp and S. Ripperger

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200488

      Thumbnail image of graphical abstract

      For calculation of forces and stresses in bulk cargos by the discrete elements method, a new mode for calibration of the simulation parameters is developed. By significant simplifications of the parameters and the calibration it is even possible to apply this method to simulate the processes in large bulk cargo silos with several millions of particles.

    4. Influence of Parameters on Glycerol Hydrogenolysis over a Cu/Al2O3 Catalyst (pages 411–418)

      A. Wolosiak-Hnat, E. Milchert and B. Grzmil

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200549

      Thumbnail image of graphical abstract

      The effect of various technological parameters on glycerol hydrogenolysis to 1,2-propanediol over a Cu/Al2O3 catalyst prepared by coprecipitation was determined. Temperature, amount of catalyst, and reaction time influenced the process most significantly. A catalyst recycle study indicates that the Cu/Al2O3 catalyst loses its activity gradually.

    5. Wastewater Minimization in Pulp and Paper Industries through Energy-Efficient Reverse-Osmosis Membrane Processes (pages 419–425)

      Y. Saif, A. Almansoori and A. Elkamel

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200445

      Thumbnail image of graphical abstract

      In order to reduce salt concentrations in wastewater streams for recycling purposes, reverse osmosis is applied as an interception separation technology. Options for reducing wastewater volumes by regeneration and recycling routes in the pulp and paper industry are evaluated. A preliminary cost estimate provides economic incentives by installation of reverse osmosis units.

    6. Solubility of Ibuprofen, Phytosterol, Salicylic Acid, and Naproxen in Aqueous Solutions (pages 426–434)

      D. Bolten, R. Lietzow and M. Türk

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200510

      Thumbnail image of graphical abstract

      The influence of conventional stabilizers and buffers on the solubility of three nonsteroidal anti-inflammatory drugs (NSAIDs) and phytosterol in aqueous solutions is analyzed and discussed. These experimental data are crucial for e.g. solubilization processes which can be applied to overcome the poor solubility of drugs in aqueous media.

    7. Highly Efficient Oxidative Desulfurization of Fuels by Lewis Acidic Ionic Liquids Based on Iron Chloride (pages 435–442)

      Y. Dong, Y. Nie and Q. Zhou

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200570

      Thumbnail image of graphical abstract

      The oxidative desulfurization process of fuels using ionic liquids (ILs) was studied. Lewis acidic ILs acted as both extractant and catalyst in the removal of dibenzothio-phene and benzothiophene with 30 wt % hydrogen peroxide aqueous solution as oxidant. The effects of different reaction parameters such as Lewis acidity, cation structure, and reaction temperature on the sulfur removal were investigated.

    8. Micromixing of Solid-liquid Systems in a Stirred Tank with Double Impellers (pages 443–449)

      L. Yang, J. Cheng, P. Fan, C. Yang and Z. Mao

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200406

      Thumbnail image of graphical abstract

      The effect of two sizes of glass beads on micromixing has been investigated using the competitive iodide/iodate reaction system. Different feeding locations and its relation with the total energy dissipation have been explored. Experimental results showed that the presence of the particles could have a negative effect on micromixing. Also, distributed feeding of reactants is beneficial to the overall selectivity towards the desired products.

    9. Numerical Simulation of the Two-Phase Fluid Field in a Gas-Around-Liquid Spray Nozzle (pages 450–458)

      D. Liu, B. Chen and B. Zhang

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200400

      Thumbnail image of graphical abstract

      Since the atomization effect of spray nozzles plays a key role in wet flue gas desulfurization processes, an innovative gas-around-liquid spray nozzle was designed. The two-phase flow fluid field in this nozzle was simulated numerically and the flow characteristics were determined with different structural parameters to find the optimum conditions.

    10. Liquefaction of Cornstalk in Sub-/Supercritical Cyclohexane with Zeolite (pages 459–466)

      H. Tao, X. Xie, X. Li and C. Zheng

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200384

      Thumbnail image of graphical abstract

      Liquefaction of cornstalk in sub-/supercritical cyclohexane catalyzed by a zeolite was investigated. The reaction system was divided into four fractions: lumps gas, water-soluble fraction, ethanol-soluble fraction, and residue. The effects of different reaction parameters on the lump yields were studied and the main secondary reaction pathways of bio-oil generation are proposed.

    11. Optimized Backflushing Process for Fibrous Media in Engine Oil Filtration and Enhancement by Ultrasound (pages 467–473)

      F. Gruschwitz, H. Nirschl and H. Anlauf

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200574

      Thumbnail image of graphical abstract

      Regeneration of fibrous filter media by backflushing is a challenging task. Generally, reliance on hydrodynamic properties of the fluid action is reported as the mechanism of action. This postulate could be experimentally proven for the case of an engine lube oil filtration task. More so, superposed ultrasonification could be shown as a means to enhance the hydrodynamic backflushing effect.

    12. Numerical Study on the Effect of Cavitation on Flow and Diesel Fuel Atomization Characteristics (pages 474–482)

      H. Sadegharani, M. Haghshenasfard and J. Salimi

      Article first published online: 6 FEB 2013 | DOI: 10.1002/ceat.201200454

      Thumbnail image of graphical abstract

      Computational fluid dynamics-based models were applied to consider the effect of cavitation on fuel atomization in nozzles of different length-to-width ratios. The results indicated that cavitation has a strong impact on fuel injection and spray quality, i.e., cavitation generated in the nozzle enhances the fuel atomization characteristics.

    13. Development of a Group Contribution Method Based on UNIFAC Groups for the Estimation of Vapor Pressures of Pure Hydrocarbon Compounds (pages 483–491)

      M. Rezakazemi, A. Marjani and S. Shirazian

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ceat.201200422

      Thumbnail image of graphical abstract

      A group contribution method based on UNIFAC groups was developed to estimate the vapor pressures of pure hydrocarbons at reduced temperatures. Experimental vapor pressures for 456 hydrocarbons were collected and used to calculate model parameters. Model finding showed that taking both the molecular structure and the Gibbs free energy into account significantly decreases the prediction error.

    14. Combination of Black-Light Photo-catalysis and Ozonation for Emerging Contaminants Degradation in Secondary Effluents (pages 492–499)

      Á. Encinas, F. J. Rivas, F. J. Beltrán and A. Oropesa

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ceat.201200311

      Thumbnail image of graphical abstract

      Processes based on the use of black-light radiation and ozone were applied to a mixture of nine emerging contaminants in water. The influence of municipal wastewater was investigated at different initial contam-inants concentration. A TiO2-coated activated carbon was lab-prepared and evaluated in photo-catalytic tests. The theoretical contaminants' evolution was simulated in different aqueous matrixes for ozonation experiments.

    15. Kinetic Modeling of Reactive Absorption of Carbon Dioxide in a Spray Dryer (pages 500–506)

      L. Kavoshi, M. S. Hatamipour and A. Rahimi

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ceat.201200304

      Thumbnail image of graphical abstract

      Conceptual combination of a theoretical kinetic model with a set of experimental data, which were designed by the response surface method, enabled a semi-empirical kinetic model for reactive absorption of CO2 with NaOH in a laboratory-scale spray-dryer absorber. Optimum operating conditions for maximum absorption efficiency were determined.

    16. Computational Simulation for Transport of Priority Organic Pollutants through Nanoporous Membranes (pages 507–512)

      M. Ghadiri, M. Ghasemi Darehnaei, S. Sabbaghian and S. Shirazian

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ceat.201200513

      Thumbnail image of graphical abstract

      Modeling and numerical simulation of membrane-based solvent extraction by computational fluid dynamics of mass transfer for removal of priority organic pollutants from wastewaters by membrane contactors are established and performed. A comprehensive mathematical model is developed to predict the transport of pollutants through nanoporous media.

    17. Optimization of Oxygen Transfer through Membrane Diffusers for Biological Sweetening of Biogas (pages 513–518)

      G. Rodriguez, A. D. Dorado, A. Bonsfills, D. Gabriel and X. Gamisans

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ceat.201200603

      Thumbnail image of graphical abstract

      The effect of operating variables on the oxygen mass transfer process was tested in a pilot plant using a membrane diffuser as intensive gas-liquid contactor. Tests simulated the conditions of biofiltration of H2S at high loads for biogas sweetening. Interesting effects were observed with higher solution ion concentration and additional nonliquid phase.

    18. Performance Comparison of Different Separation Systems for H2 Recovery from Catalytic Reforming Unit Off-Gas Streams (pages 519–527)

      A. Mivechian and M. Pakizeh

      Article first published online: 7 FEB 2013 | DOI: 10.1002/ceat.201200558

      Thumbnail image of graphical abstract

      The performance of pressure swing adsorption (PSA), membrane separation, and gas absorption systems for hydrogen recovery from refinery off-gas streams was investigated by simulation-based data. The membrane process enables high recoveries and high purity simultaneously unlike the PSA process and higher hydrogen recovery compared to the other processes.

  9. Overview

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Scientific Highlights
    7. Letters to The Editor
    8. Review
    9. Research Articles
    10. Overview
    1. You have free access to this content
      Overview Contents: Chemie Ingenieur Technik 3/2013 (page 531)

      Article first published online: 25 FEB 2013 | DOI: 10.1002/ceat.201390011

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