Chemical Engineering & Technology

Cover image for Vol. 39 Issue 2

Impact Factor: 2.442

ISI Journal Citation Reports © Ranking: 2014: 33/135 (Engineering Chemical)

Online ISSN: 1521-4125

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

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  1. Cyclization of Pseudoionone Catalyzed by Sulfuric Acid in a Microreactor

    Feng Zhou, Boyu Zhang, Chaoqun Yao, Kai Zhu, Mei Yang and Guangwen Chen

    Article first published online: 4 FEB 2016 | DOI: 10.1002/ceat.201500670

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    A microreactor system was developed for the preparation of ionones by cyclization of pseudoionone through sulfuric acid. Effects of reaction conditions on the product distribution were investigated in detail. Sulfuric acid concentration turned out to be crucial for conversion and selectivities of the reaction. The formation of two types of important by-products was analyzed.

  2. Feedstock Characterization and Suitability Assessment for Dry Anaerobic Batch Digestion

    Harald Wedwitschka, Earl Jenson and Jan Liebetrau

    Article first published online: 4 FEB 2016 | DOI: 10.1002/ceat.201500413

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    Dry anaerobic batch digestion is most suitable for treating stackable dry waste materials. Material characterization was conducted on feedstocks, structure materials, and digestates. An oedometer test method allowed for substrate suitability assessment for dry batch digestion. A combination of different carrier materials could improve overall material permeability under compression.

  3. Effect of Shear Stress on Deoiling of Oil-Contaminated Catalysts in a Hydrocyclone

    Yin-xiang Xu, Yi Liu, Yan-hong Zhang, Xue-jing Yang and Hua-lin Wang

    Article first published online: 4 FEB 2016 | DOI: 10.1002/ceat.201500378

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    Recovery and reuse of spent catalysts has become essential, particularly removal of hydrocarbon pollutants from oil-contaminated catalysts. A minihydrocyclone is applied to remove oil from oil-contaminated Al2O3 catalysts by high-shear washing with high efficiency. The velocity field and shear stress field of the hydrocyclone are numerically simulated.

  4. Kinetic Study of Methyl Isobutyl Ketone Combustion over a Commercial Pt/Alumina Catalyst

    Ionut Banu, Georgeta Bercaru, Grigore Bozga and Tiberiu D. Danciu

    Article first published online: 4 FEB 2016 | DOI: 10.1002/ceat.201500313

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    The adequacy of a kinetic model for methyl isobutyl ketone combustion in air over a Pt/γ-Al2O3 catalyst based on the Langmuir-Hinshelwood theory is proven by statistical criteria and thermodynamic consistency. Parameter estimation based on a heterogeneous reactor model is recommended for catalytic combustion processes involving volatile organic compounds.

  5. Statistical Interpretation of Semi-Continuous Anaerobic Digestion Experiments on the Laboratory Scale

    Josephine Hofmann, Gregor Peltri, Heike Sträuber, Liane Müller, Britt Schumacher, Ulf Müller and Jan Liebetrau

    Article first published online: 3 FEB 2016 | DOI: 10.1002/ceat.201500473

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    When evaluating small effects on biogas production, the usual methods such as single digesters or the mere comparison of mean values often reach their limits. Since small effects appear after substrate disintegration, proper statistical interpretation of the biogas production and appropriate experimental design focusing on replication are demonstrated by four exemplary disintegration experiments.

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