Engineering the molecule of life

The group “Water Systems Engineering“, led by Dr. Karl Glas, is focusing on the interface of water, energy and environment with a special emphasis on the needs of the beverage and food industry. Within this highly complex context, a wide spectrum of specific issues (drinking water, waste water, process engineering, microbiology, water as food, sensory) is studied in various research projects. These investigate subjects like the management of energy or material processes and specific issues of microbiological or industrial hygiene. Theoretical as well as technical solutions ensure the maximization of energy and resource efficiency of single process steps or complex process chains and provide alternatives for established processes while minimizing the impact on the environment. Sophisticated methods are used for the simulation of chemical-physical processes, for the analysis of novel materials, and for the modelling of composite facilities and multi-parametric process structures. The group organizes the annual seminar series “Weihenstephaner Seminar für Wassertechnologie” (see HERE).

Scheme of the treatment process from waste water to the process water


TUM Wasser Cluster
Wasserforschung an der Technischen Universität München

Forschungsprojekt HyMo_ME
Hybride Modellierung und Prognose des Medien- und Energiebedarfs in der Getränkeindustrie

Forschungsprojekt MiPAq
Mikropartikel in der aquatischen Umwelt und in Lebensmitteln – sind biologisch abbaubare Polymere eine denkbare Lösung für das „Mikroplastik-Problem“?

Selected Publications

Jana Weisser, Irina Beer, Benedikt Hufnagl, Thomas Hofmann, Hans Lohninger, Natalia P. Ivleva and Karl Glas. From the Well to the Bottle: Identifying Sources of Microplastics in Mineral Water. 2021. Water, 13(6), 841. doi.org/10.3390/w13060841

S. Brunschweiger, L. Hörner, T. Hofmann, K. Glas. Microbial fuel cells for brewery wastewater treatment – efficiency requirements and treatment performance. 2021. Brewing Science, 47, 27-38. doi.org/10.23763/BrSc21-02brunschweiger

Marcus Verhuelsdonk, Karl Glas, Harun Parlar. Long-Term Operation of a Pilot-Scale Membrane Bioreactor Treating Brewery Wastewater: Relaxation as a Method for Detection of Membrane Fouling. 2021. Journal of Environmental Management, 147(4): 04021005. doi.org/10.1061/(ASCE)EE.1943-7870.0001862.

Marcus Verhuelsdonk, Karl Glas, Harun Parlar. Economic evaluation of the reuse of brewery wastewater. 2021. Journal of Environmental Management, 281, 111804. doi.org/10.1016/j.jenvman.2020.111804

Sarah Brunschweiger, Thomas Hofmann, Karl Glas. Industrial wastewater treatment with simultaneous energy recovery using microbial fuel cells – a review. 2020. Brewing Science, 73, pp. 111-125. doi.org/10.23763/BrSc20-15brunschweiger

Mohammed S. M. Al-Azzawi, Simone Kefer, Jana Weißer, Julia Reichel, Christoph Schwaller, Karl Glas, Oliver Knoop and Jörg E. Drewes. Validation of Sample Preparation Methods for Microplastic Analysis in Wastewater Matrices—Reproducibility and Standardization. 2020. Water, 12, 2445. doi.org/10.3390/w12092445

von Heynitz, Christian; Stecker, Manuel; Hofmann, Thomas; Glas, Karl. A Novel Dry Hopping Technology: Kinematic Modelling of a Planetary Rotating Bed Reactor. 2020. BrewingScience. 73. 3. 68-76. doi.org/10.23763/BrSc20-09heynitz.

Brunschweiger, S.; Ojong, E. T.; Weisser, J.; Schwaferts, C.; Elsner, M.; Ivleva, N. P.; Haseneder, R.; Hofmann, T. & Glas, K. The effect of clogging on the long-term stability of different carbon fiber brushes in microbial fuel cells for brewery wastewater treatment, Bioresource Technology Reports, Elsevier BV, 2020, 100420

Von Der Esch, E.; Lanzinger, M.; Kohles, A.J.; Schwaferts, C.; Weisser, J.; Hofmann, T.; Glas, K.; Elsner, M.; Ivleva, N.P. Simple Generation of Suspensible Secondary Microplastic Reference Particles via Ultrasound Treatment. Frontiers in Chemistry, section Analytical Chemistry; Manuscript ID: 485011, 2020

Walsh, K.; Mayer, S.; Rehmann, D.; Hofmann, T.; Glas, K. Equilibrium Data and its Analysis with the Freundlich Model in the Adsorption of Arsenic(V) on Granular Ferric Hydroxide. Separation and Purification Technology; Volume 243, 2020, 116704

Singelmann, A.; Brunschweiger, S.; Glas, K.; Tabu Ojong, E.; Haseneder, R. Mikrobielle Brennstoffzellen zur Behandlung von Brauereiabwasser. Brauwelt, Nr. 3, 2020, S. 62-64

Zotz, M.; Glas, K. (2017) Modelling of ClO2-decomposition in Hot Water Systems, BrewingScience, 70, 51-56.

Rose, P.; Hager, S.; Glas, K.; Rehmann, D.; Hofmann, T. (2017) Coating techniques for glass beads as filter media for removal of manganese from water. Water Sci Technol Water Supply 17 (1), S. 95–106. DOI: 10.2166/ws.2016.116.

Verhülsdonk, M.; Glas, K. (2012) Comparative Investigation on the Influence of Fouling and Scaling on the Membrane Filtration of Waste Water. BrewingScience, 65, 53-59.

Heim, C.; Glas, K. (2011) Ozone I: Characteristics/Generation/Possible Applications. BrewingScience, 64, 8-12.

Verhülsdonk, M.; Glas, K. (2011) Introduction to the Growth and Modelling of Biofilms in Ultrafiltration and Reverse Osmosis Plants. BrewingScience, 64, 41-45.

Heim, C.; Ureña de Vivanco, M.; Rajab, M.; Glas, K.; Horn, H.; Helmreich, B.; Letzel, T. (2011) Ozone II: Characterization of In Situ Ozone Generation Using Diamond Electrodes. BrewingScience, 64, 83-88.


Dr.-Ing. Glas, Karl Wissenschaftlicher Leiter 2356
Bähr, Gudrun Chemisch-technische Assistentin 4270
Brunner, Dominik Wiss. Mitarbeiter / Doktorand 2350
Brunschweiger, Sarah Wiss. Mitarbeiterin / Doktorandin 6596
Hager, Simon Wiss. Mitarbeiter / Doktorand 5864
Saad, Swely Wiss. Mitarbeiterin / Doktorandin 2358
Schmid, Sebastian Doktorand 2358
von Heynitz, Christian Wiss. Mitarbeiter / Doktorand 2357
Weißer, Jana Wiss. Mitarbeiterin / Doktorandin 5886


AG Wassertechnologie

Maximus-von-Imhof-Forum 2
85354 Freising

Tel.: +49 8161 71 2356
Fax: +49 8161 71 5362