Science & Blog
Research & Publications
Joint project: Optical soft sensor technology of algae cultivation in large-scale photobioreactors – optimisation through process control and combating microbial contamination (optiPBR), 2021-2024
Funding reference number: 13N15851 Funding reference 01IS21065D SOPAT will provide relevant information for process control with fast and process-related data evaluation based on image analysis of digital images generated inline, which can be integrated into a process control system in order to quickly initiate suitable countermeasures in the event of
iPMT Joint Project: Data synthesis for applications in intelligent particle measurement technology, 2021 – 2023
Funding reference 01IS21065D The aim of the project is to develop and validate methods for the synthesis of training data for Deep Learning-based particle measurement technology, exemplified by image-based methods for the detection of particles in (microscope) images to determine the particle size distribution, as well as time- and location-dependentmeasurements
Predicition of drop sizes for liquid-liquid systems in stirred slim reactors – Part I: Single stage impellers, 2010
— Authors: Maaß, S., Metz, F., Rehm, T. und Kraume, M.— Chemical Engineering Journal, 162 (2): 792 – 801 (link) Although investigations in the field of stirred liquid/liquid dispersions have a long history, new questions are still emerging in dealing with the different aspects of industrial applications, such as suspension polymerizations. In
Experimental comparison of measurement techniques for drop size distributions in liquid/liquid dispersions, 2011
— Authors: Maaß, S., Wollny, S., Voigt, A. und Kraume, M.— Experiments in Fluids, 50(2): 259-269 (link) An online measurement technique for drop size distribution in stirred tank reactors is needed but has not yet been developed. Different approaches and different techniques have been published as the new standard during the
Prediction of drop sizes for liquid-liquid systems in stirred slim reactors – Part II: Multi stage impellers, 2011
— Authors: Maaß, S., Rehm, T. und Kraume, M.— Chemical Engineering Journal, 168(2): 827–838 (link) Based on the successful predictions of transient drop sizes in the first part of this research (Maaß et al., Prediction of drop sizes for liquid–liquid systems in stirred slim reactors—part I: single stage impellers. Chem. Eng.
— Authors: Maaß, S., Buscher, S., Hermann, S. und Kraume, M. — Biotechnology Journal, 6(8): 979-992 Understanding of particle strain and drop breakage is relevant for various technical applications. To analyze it, single drop experiments in a breakage cell and evolving drop size distributions in an agitated system are studied.
— Authors: Maaß, S. und Kraume, M.— Chemical Engineering Science, 70: 146-164 (link) An evaluation of several breakage rates from the literature based on single drop experiments was carried out. This data was collected in a single drop breakage cell under turbulent conditions, comparable to those in a stirred tank. For
Influence of the dispersed phase fraction on experimental and predicted drop size distributions in breakage dominated stirred systems, 2012
— Authors: Maaß, S., Paul, N. und Kraume, M. — Chemical Engineering Science, 76: 140-153 (link) The effect of the dispersed phase fraction on the evolving drop size distribution in different low viscous agitated liquid/liquid systems was investigated. The analysis focused on the drop breakage phenomena by hindering the coalescence completely.