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5.574 Aktuelle Fachpublikationen aus der Branche Verfahrenstechnik

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Cover Chem. Eng. Technol. 3/2015

24.02.2015 | Chemical Engineering & Technology, 2015

Abstract Equipment, cables and piping as found inside an industrial plant. Copyright: Andrei Merkulov – Fotolia.com

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Group Contribution Methods for Estimation of Ionic Liquid Heat Capacities: Critical Evaluation and Extension

24.02.2015 | Paul Nancarrow, Moira Lewis, Lamis AbouChacra, Chemical Engineering & Technology, 2015

Abstract Recently, new group contribution method (GCM) models have been developed for ionic liquids (ILs). However, difficulty arises in choosing an appropriate GCM for a given property estimation due to the fact that the reported accuracies do not enable meaningful comparison since they have ...

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Effect of fluid velocity on radioactive ion retention by fluidized bed reactor

21.02.2015 | Mohamed Abdelaziz, Azza H. Ali, Hesham F. Elbakhshawangy, Sameh H. Othman, The Canadian Journal of Chemical Engineering, 2015

This study is concerned with the design, construction, simulation, and pre‐operation of a fluidized bed reactor for low level radioactive waste treatment by a new chelating resin. In this respect a new mathematical model is suggested to account for the effect of fluid velocity and to determine ...

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3D CFD Modelling And Optimization Of Single‐Phase Flow In Rotating Packed Beds

21.02.2015 | Yucheng Yang, Yang Xiang, Yingang Li, Guangwen Chu, Haikui Zou, Moses Arowo, Jianfeng Chen, The Canadian Journal of Chemical Engineering, 2015

Rotating Packed Beds (RPBs) are novel reactors used for intensification of mass transfer and mixing since they provide adjustable centrifugal force to simulate high gravity. In this work, in order to analyze and optimize fluid flow in RPBs, a three‐dimension single‐phase flow was simulated and ...

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Aspects Of Changing The Safety Culture In Today's Universities

21.02.2015 | Graeme W. Norval, The Canadian Journal of Chemical Engineering, 2015

The University of today is little changed from that of a century ago. Students attend lectures, sitting in rows of chairs rather than benches. The lecture notes are projected onto a screen, and only occasionally are chalkboards used. The biggest change is with technology in that lecture ...

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Evaluation of m‐xylene ammoxidation at bench‐scale operation in the presence of V2O5/γ‐Al2O3 catalyst

16.02.2015 | Yukwon Jeon, Sung wook Row, Sang sun Park, Sang Duek Lee, Kyeongseok Oh, Yong‐Gun Shul, The Canadian Journal of Chemical Engineering, 2015

A bench‐scale ammoxidation reaction of m‐xylene was evaluated in the presence of V2O5/γ‐Al2O3 catalyst. The experiment was performed in a packed‐bed reactor with 25 mm i.d. using 200 g of catalyst. To alleviate sudden temperature hikes during ammoxidation, molten salt system was carefully built ...

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Purification, immobilization, and characterization of protease from local Bacillus subtilis M‐11

09.02.2015 | Selmihan Sahin, Ismail Ozmen, Esengul Kir, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract Protease from Bacillus subtilis M‐11 was produced and purified using ammonium sulfate precipitation, gel filtration chromatography with 15.8‐fold. The purified enzyme showed a single band on sodium dodecyl sulfate‐polyacrylamide gel electrophoresis, and it was determined that its ...

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Improvement of zeolites on solidification/stabilization of mercury‐contaminated wastes in chemically bonded phosphate ceramics: stabilization effect and mechanism study

09.02.2015 | Xinyan Zhang, Shaoqing Zhang, Lin Long, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract In this study, two kinds of zeolites materials [natural zeolite (NZ) and thiol‐functionalized zeolite] were added to the chemically bonded phosphate ceramics (CBPCs) processes for the stabilization/solidification (S/S) of mercury‐contaminated hazardous wastes. The stabilization effect ...

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Synthesis, Characterization, and Catalytic Activity of Mn‐doped Perovskite Oxides for Three‐Way Catalysis

02.01.2015 | Chen Zhou, Yexin Zhang, Lingjun Hu, Hongfeng Yin, Wei Guo Wang, Chemical Engineering & Technology, 2015

Abstract Mn‐doped La0.8Sr0.2CoO3 perovskite oxides (La0.8Sr0.2Co1–xMnxO3; x = 0, 0.1, 0.3, 0.5) were synthesized by a modified sol‐gel method. The phase‐pure oxides were obtained. CoO and carbonates were formed on the surface of La0.8Sr0.2CoO3. With increasing doping content, these impurities ...

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Velocity Distribution inside a Laminated‐Sheet Microchannel Reactor

02.01.2015 | Minqiang Pan, Lei Li, Xiaojia Shao, Dehuai Zeng, Chemical Engineering & Technology, 2015

Abstract In a laminated‐sheet microchannel reactor, several microchannel sheets with the same or different structures are mutually laminated together. The effect of microchannel and manifold structure as well as the number of laminated sheets on the velocity distribution among microchannels in ...

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