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Matthias Etmanski

Matthias Etmanski Photo of Matthias Etmanski

(+49)231 755-2699

(+49)231 755-2341


Laboratory of Plant and Process Design
Emil-Figge-Str. 70
Geschossbau 2
44227 Dortmund

Room G2-R3.16



Born January 26th, 1994 in Remscheid (Germany)
2004-2012 Leibniz-Gymnasium, Remscheid (Germany)


B.Sc. Chemical Engineering Studies, TU Dortmund University

Bachelor thesis: Influence of Impurities on the Growth Kinetics of Organic Crystalline Compounds


M.Sc. Chemical Engineering Studies, TU Dortmund University

Master thesis: A Contribution towards Slug Flow Crystallization: Residence Time Increase, Cooling and Nucleation Concepts

Since 2019

PhD at the Laboratory of Plant and Process Design, TU Dortmund University

Field of Research: Continuous crystallization



Crystallization is a key unit operation for separation and purification in the fine chemical and pharmaceutical industry. A tight control of product quality characteristics like crystal shape and crystal size distribution is crucial as they affect following downstream processes. At present, crystallization is commonly conducted in batch mode, although continuous processes offer several advantages. Therefore, the development of continuous crystallization processes has moved into the focus of research.


In this work, a continuous taylor-couette crystallizer is developed and characterized. It consists of two concentric cylinders, of which the inner one rotates while the outer one is stationary. As a result, toroidal vortices are induced in the annular gap that reduce axial dispersion and enhance mixing also for small volume flow rates. Different geometries and operating parameters are investigated towards an enhanced control of crystal product quality.



  • Matthias Markus Etmanski, Max Breloer, Marius Weber, Gerhard Schembecker, Kerstin Wohlgemuth
    Interplay of Particle Suspension and Residence Time Distribution in a Taylor-Couette Crystallizer
    Crystals 2022, 12(12), 1845; https://doi.org/10.3390/cryst12121845

  • Maren Termühlen, Matthias Markus Etmanski, Ines Kryschewski, Anne Cathrine Kufner, Gerhard Schembecker, Kerstin Wohlgemuth
    Continuous Slug Flow Crystallization: Impact of Design and Operating Parameters on Product Quality
    Chemical Engineering Research and Design 170 (2021) 290–303

Oral Presentations

  • M. Etmanski, V. Endrikat, N. Rasche, G. Schembecker, K. Wohlgemuth
    Visualizing Particle Size Classification and the Effect of Gradual Cooling in a Taylor-Couette Crystallizer
    Jahrestreffen der ProcessNet-Fachgruppe Kristallisation, Dortmund (2022)


Poster Presentations

  • M. Etmanski, M. Weber, G. Schembecker, K. Wohlgemuth
    Characterization of crystal suspension and residence time distribution in a Taylor-Couette device for continuous crystallization
    Jahrestreffen der ProcessNet-Fachgruppe Kristallisation, Virtual Meeting (2021)

  • M. Etmanski, M. Breloer, G. Schembecker, K. Wohlgemuth
    Designing a Continuous Taylor-Couette Crystallizer – Residence Time Distribution and Suspension Characteristics
    21st ISIC - International Symposium on Industrial Crystallization, Virtual Meeting (2021)

  • M. Etmanski, N. Rasche, G. Schembecker, K. Wohlgemuth
    The Way to an Efficient Operation of a Continuous Taylor-Couette Cooling Crystallizer
    (Bio)Process Engineering/ProcessNet (2022), Aachen