Chemical Engineering & Technology

Cover image for Vol. 38 Issue 8

Early View (Online Version of Record published before inclusion in an issue)

Impact Factor: 2.442

ISI Journal Citation Reports © Ranking: 2014: 33/134 (Engineering Chemical)

Online ISSN: 1521-4125

Associated Title(s): Chemie Ingenieur Technik, ChemBioEng Reviews, Energy Technology

VIEW

  1. 1 - 12
  1. Research Articles

    1. Succinic Acid Production in Fed-Batch Fermentation of Anaerobiospirillum succiniciproducens Using Glycerol as Carbon Source

      Karlheinz Bretz

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201500015

      Thumbnail image of graphical abstract

      The optimization of glycerol concentration and the addition of small amounts of glucose improves growth and succinic acid production of Anaerobiospirillum succiniciproducens. In fed-batch experiments the final succinic acid concentration could be improved with glycerol-glucose mixtures by factor 2.5 in comparison to glycerol as sole carbon source.

    2. Low-Temperature Selective Catalytic Reduction of NO on an Iron Ore Catalyst in a Magnetically Fluidized Bed

      Keting Gui, Hui Liang, Fang Wang, Xiaobo Wang and Guihuan Yao

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201400190

      Thumbnail image of graphical abstract

      Iron ore is a kind of inexpensive and low-temperature catalytic material for NO removal, but still exhibits poor removal efficiency. With the aid of ferromagnetic iron, NO removal efficiency can be greatly improved in the entire experimental temperature range by using an admixture of iron ore and iron as catalyst in a magnetically fluidized bed.

    3. Heterogeneous Catalyst of Mixed K Compounds/Ca-Al-Graphite Oxide for the Transesterification of Soybean Oil to Biodiesel

      Chuanjia Sun, Fengxian Qiu, Dongya Yang and Bin Ye

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201400084

      Thumbnail image of graphical abstract

      A novel heterogeneous solid base catalyst prepared by loading of Ca-Al-graphite oxide with mixed potassium salts was applied to the transesterification of soybean oil with methanol to produce biodiesel. Under the optimum reaction conditions identified, the catalyst retained its activity during four reaction cycles, while it could be easily separated from the reaction system.

    4. Kinetic Modeling of Sunflower Oil Methanolysis Catalyzed by Calcium-Based Catalysts

      Marija B. Tasić, Marija R. Miladinović, Olivera S. Stamenković, Vlada B. Veljković and Dejan U. Skala

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201500076

      Thumbnail image of graphical abstract

      A kinetic model of sunflower oil methanolysis that includes the changing reaction mechanism and the triacylglycerol (TAG) mass transfer is verified for calcium-based catalysts such as neat CaO, quicklime, CaO·ZnO, and Ca(OH)2. The model is a reliable predictor of the time variation of TAG and fatty acid methyl ester concentrations during sunflower oil methanolysis.

    5. Two Analytical Approaches for Solution of Population Balance Equations: Particle Breakage Process

      Abdelmalek Hasseine, Samra Senouci, Menwer Attarakih and Hand-Jörg Bart

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201400769

      Thumbnail image of graphical abstract

      For the breakage process only few cases of analytical solutions are available being mostly valid for batch stirred vessels. The Adomian decomposition and homotopy perturbation methods were successfully applied to find the exact solutions of a specific form of the population balance equation for batch and continuous flow systems for particle breakage in stirred vessels.

    6. Continuous Hydrogenation of Toluene over Sr- and PEG800-Modified Ni/γ-Al2O3 Catalysts

      Hailong Chu, Na Li, Libo Niu, Chen Liu, Mande Qiu and Guoyi Bai

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201400543

      Thumbnail image of graphical abstract

      A suitable cost-effective catalyst with low Ni loading for hydrogenation of toluene under mild reaction conditions is required. A continuous process for the highly selective synthesis of methylcyclohexane via hydrogenation of toluene using γ-Al2O3-supported nickel-based catalysts under such conditions is established. A Ni-Sr-PEG800/γ-Al2O3 catalyst showed the best catalytic performance.

    7. Power Requirement for Mixing Shear-Thinning Fluids with a Planetary Mixer

      Frederic Auger, Christophe André, Laurent Bouvier, Andreas Redl, Marie-Hélène Morel and Guillaume Delaplace

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201400345

      Thumbnail image of graphical abstract

      Knowledge of the power demand of mixing equipment is required for the optimal control of processes with non-Newtonian liquids. The power demand of a planetary mixer is studied in the case of shear-thinning fluids. An extension of the concept of Metzner and Otto to such mixers is proposed and found to be applicable to predict power consumption.

    8. A Comprehensive Computational Fluid Dynamics Study of Droplet-Film Impact and Heat Transfer

      Fan Jiang, Yijun Wang, Jianhua Xiang and Zhenzhang Liu

      Article first published online: 30 JUL 2015 | DOI: 10.1002/ceat.201400255

      Thumbnail image of graphical abstract

      The impact of a liquid droplet on a hot surface with pre-existing liquid film is numerically simulated. Effects of wall temperature, thickness of liquid film, droplet diameter, fall velocity, droplet material, and temperature of droplet and wall on the heat transfer are investigated. The results can provide a reference for design, evaluation, and improvement of spray-cooling systems.

    9. Adaptive Internal Model Control of a High-Purity Heat-Integrated Air Separation Column

      Yao Fu and Xinggao Liu

      Article first published online: 28 JUL 2015 | DOI: 10.1002/ceat.201400393

      Thumbnail image of graphical abstract

      Control schemes on high-purity heat-integrated air separation columns are still lacking. A dynamic model of such a column is established. On this basis the open-loop dynamic response and characteristics are analyzed and an internal model control scheme is proposed. An adaptive internal model control scheme is presented to correct the model parameters online.

    10. Large Eddy Simulation of Turbulent Reactive Mixing at High Schmidt and Reynolds Numbers

      Matthias Walter, Nikolai Kornev and Egon Hassel

      Article first published online: 28 JUL 2015 | DOI: 10.1002/ceat.201400371

      Thumbnail image of graphical abstract

      A comparative large eddy simulation study of a fast reactive mixing process has been performed using established micromixing models. The numerical results show that the micromixing effects, especially at high Schmidt numbers, can be essential, although the reaction is very fast. An enhanced conditional model for infinitely fast chemistry has been successfully applied to the mixer configuration.

    11. Process Intensification Tools in the Small-Scale Pharmaceutical Manufacturing of Small Molecules

      Aleksandar Mitic and Krist V. Gernaey

      Article first published online: 29 MAY 2015 | DOI: 10.1002/ceat.201400765

      Thumbnail image of graphical abstract

      Promising tools for accelerating slow chemical reactions in organic synthesis in order to achieve process intensification are reviewed with the focus on microwave radiation, meso-scale tubular reactors, microreactors, and ultrasounds. Applications of such tools for producing small molecules in the pharmaceutical industry are discussed and illustrated with examples.

    12. Nafion-H-Catalyzed High-Temperature/High-Pressure Synthesis of a Triarylmethane in Continuous-Flow Mode

      Stephan Hayden, Toma Glasnov and C. Oliver Kappe

      Article first published online: 10 MAR 2015 | DOI: 10.1002/ceat.201400581

      Thumbnail image of graphical abstract

      Friedel-Craft reactions are important types of C–C bond-forming reactions. Here, the synthesis of triarylmethanes from aromatic aldehydes and benzene using the super acid Nafion-H as the catalyst is evaluated under both batch and continuous-flow conditions. Using high-temperature/high-pressure conditions, excellent reaction yields are obtained within a few minutes reaction time.

VIEW

  1. 1 - 12

SEARCH

SEARCH BY CITATION