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Here you can find current info, event notes and other news.

In this study, the swelling behavior of roasted coffee particles in water and particularly its impact on particle diameter is examined by applying laser?diffraction analysis and microscopy. Several potential influencing factors are investigated: initial particle size, roasting degree, and temperature. Additionally, the time dependency of swelling and particle shape is evaluated at two different temperatures.

Paper

Two methods to study the primary freeze?drying behavior of bulky solids are presented, namely, lyomicroscopy and neutron imaging. The applicability of both methods to visualize the evolution of the sublimation front is tested for maltodextrin particles with different sizes and solid concentrations. Exemplary results for both methods are reported and the applicability of both methods to study freeze?drying behavior of bulk solids is described. To estimate the impact of particle size and bed height for the freeze?drying of bulky solids, a modified Biot number is introduced to estimate the optimum particle size for a given bed height and formulation. The applicability of the two methods with regard to the modified Biot numbers is discussed. Link

Researchers of the chair of process systems engineering, in cooperation with the Otto von Guericke University, investigate the freeze-drying process by using neutrons. Link

Parameter Estimation for Incompressible Cake Filtration: Advantages of a Modified Fitting Method

Using 3D printed particles to investigate fundamental particle and packing properties. Particle shape matters – Using 3D printed particles to investigate fundamental particle and packing properties

Designing optimally-graded depth filter media using a novel multiscale method

From three-dimensional morphology to effective diffusivity in filamentous fungal pellets.
Joint publication with TU Berlin.
Title: From three-dimensional morphology to effective diffusivity in filamentous fungal pellets

System Process Engineering - A Philosophical Concept Analysis

Open access full text available at https://onlinelibrary.wiley.com/doi/10.1002/cite.201800220

Impedance spectroscopy as a process analytical technology (PAT) tool for online monitoring of sucrose crystallization.
Link: https://doi.org/10.1016/j.foodcont.2019.02.005

Effect of particle-wall interaction on triboelectric separation of fine particles in a turbulent flow
Link: https://www.sciencedirect.com/science/article/pii/S0921883119300482?via%3Dihub

Cooperation Partner:

• TU Berlin, Institute of Biotechnology, Department of Applied and Molecular Microbiology
• TU Munich, Chair of Technical Microbiology

Title: An X-ray microtomography-based method for detailed analysis of the three-dimensional morphology of fungal pellets

Analysis of two common algorithms to compute self-diffusion coefficients in infinite dilution from molecular dynamics simulations and application to n-alkanes (C1 to C35) in water in Fluid Phase Equilibria

We congratulate our colleague Moritz Kindlein, who was honored at this year's annual meeting of the ProcessNet Subject  Division Food Technology. The annual meeting took place at the Nestle Research Center in Lausanne. He achieved third place with the presentation "Modeling the refining of chocolate and related molecular mechanisms with impact on rheology".

"Enhancing the X-ray contrast of polymeric biochromatography particles for three-dimensional imaging"
Journal of Chromatography A
Link: www.sciencedirect.com/science/article/pii/S0021967318316017

[Translate to English:] www.youtube.com/watch

Modeling the Separation of Microorganisms in Bioprocesses by Flotation

Population Balance Modeling and Opinion Dynamics - A Mutually Beneficial Liaison?
(DOI: 10.3390/pr6090164)

"Decreasing Filter Cake Resistance Using Packing Structures"
 (DOI: 10.1002/ceat.201800254)

"Increasing Wort Flow by Flocculation of Fine Particle Fractions"
 (DOI: 10.23763/BrSc18-09bandelt)

Oral presentations:
Stefan Schmideder, Christoph Kirse, Julia Hofinger, Sascha Rollié, and Heiko Briesen: "Modeling the separation of microorganisms in bioprocesses by flotation"

Michael Kuhn, Christoph Kirse, and Heiko Briesen: "Population balance modeling and opinion dynamics –a mutually beneficial liaison?"

Christoph Kirse and Heiko Briesen: "Fixed pivot technique for solving a  bivariate model of enzymatic depolymerization of branched starch"

Posters:
Tijana Kovacevic and Heiko Briesen: "A new, area - preserving model of crystal growth and aggregation"

Stefan Schmideder, Tiaan Friedrich, Tijana Kovacevic, Lars Barthel, Philipp Kunz, Vera Meyer, Rudibert King and Heiko Briesen: "Growth of filamentous microorganisms: PBM and experimental determination of rate equations"