Chemical Engineering & Technology
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Recent Special Issues
Edited by: Bernd Epple
Edited by: Zuoliang Sha, Qiuxiang Yin and Jianxin Chen
Micro Flow Processes
Edited by: Volker Hessel and Qi Wang
Grinding and Dispersing
Edited by: Arno Kwade
Recently Published Articles
- Effect of Particle Shape on Inline Particle Size Measurement Techniques
Maryam Mostafavi, Sandra Petersen and Joachim Ulrich
Article first published online: 2 SEP 2014 | DOI: 10.1002/ceat.201400212
Powerful sensor technologies to analyze suspension density and mean particle size in crystallization processes inline and in real time are ultrasound, 3D optical reflectance measurement, and focused-beam reflectance measurement techniques. Measurement principles, advantages and disadvantages as well as and the different sensitivities of these techniques with respect to the shape of particles are evaluated and discussed.
- Prediction of Phase Split in Horizontal T-Junctions: Revisited
Dhurjati P. Chakrabarti
Article first published online: 2 SEP 2014 | DOI: 10.1002/ceat.201300848
Two-phase flow through a T-junction can cause a major problem of operation and control in oil and gas production due to misdistribution of the phases. Based on previously studied models, the prediction of liquid–liquid two-phase flow at a horizontal dividing T-junction is re-investigated. Attempts are made to predict the split for liquid–liquid systems by including energy minimization.
- Design Strategies for Integrated β-Galactosidase Purification Processes
Ailton C. Lemes, Juliana Ribeiro Machado, Marcela Lazzare Brites, Marco Di Luccio and Susana Juliano Kalil
Article first published online: 2 SEP 2014 | DOI: 10.1002/ceat.201300433
As an alternative to the usual primary purification steps, a strategy for β-galactosidase was established from purification methods amenable to scale-up, allowing the application of the enzyme in enzymatic hydrolysis processes. The proposed process design involving aqueous two-phase system, diafiltration, ion exchange, and diafiltration/ultrafiltration led to a high purification factor and recovery of the enzyme.
- Mass Transfer Reaction Kinetics of β-Isophorone Oxidation by Air in an Agitator Bubbling Reactor
Hong Yin, Caiping Sheng, Zhirong Chen, Shenfeng Yuan, Haoran Li and Jun Mei
Article first published online: 2 SEP 2014 | DOI: 10.1002/ceat.201300726
Since to date the mass transfer reaction process of β-isophorone (β-IP) oxidation by air has been only rarely reported, the kinetics of this reaction in a lab-scale agitator bubbling reactor is analyzed. A correlation equation of gas phase volumetric mass transfer coefficients is defined, providing a valuable theoretical basis for industrial design of a β-IP oxidation reactor.
- Fabrication of Palladium Membranes Supported on a Silicalite-1 Zeolite-Modified Alumina Tube for Hydrogen Separation
Yu Guo, Hongmei Wu, Lidai Zhou, Zhenbin Zhang, Haiou Liu and Xiongfu Zhang
Article first published online: 2 SEP 2014 | DOI: 10.1002/ceat.201300830
Membrane techniques for H2 separation are increasingly demanded in chemical and petrochemical industries. Thin and dense palladium membranes were prepared on macroporous α-alumina tubes by electroless plating using silicalite-1 zeolite as the intermediate and diffusion barrier layer. The excellent hydrogen permeability and stability allow the composite membrane to act as membrane reactor for H2 separation.