In a new interdisciplinary project between BTU Cottbus and TU Dresden, researchers are investigating the use of novel enzymes to remove micropollutants from municipal wastewater

Medicines are good for our bodies. However, depending on the type of drug, up to 90 percent of the active ingredient is excreted unchanged and thus ends up in wastewater. Improper disposal of pharmaceutical products in toilets and washbasins also leads to residues that can only be partially intercepted in wastewater treatment plants. The remaining substances are then discharged with the treated water into surface waters. Residues can therefore be detected in bodies of water as well as in drinking water – albeit in much smaller quantities.

A new filter technology based on enzyme-functionalized biopolymer modules could provide a remedy. In their project “Elimination of micropollutants from municipal wastewater using immobilized enzymes (ELMIK),” researchers at the Brandenburg University of Technology Cottbus-Senftenberg (BTU) and TUD Dresden University of Technology (TU Dresden) are developing, testing and evaluating how enzymes bound to carrier materials can break down micropollutants in an innovative process. These enzymes could be used in an adapted filter cartridge in wastewater treatment plants to permanently remove pharmaceutical residues. The best part? This technology produces no toxic by-products and the cost is comparatively low. What’s more, the research results can also be transferred to other applications, such as spray residues of pesticides in agriculture, disinfectants or de-icing agents. Completion of the first prototype is planned for 2026.

Speaking on the topic, Judith Pirscher, State Secretary at the Federal Ministry of Education and Research (BMBF), said, “Clean water is essential to our health and the health of ecosystems. It’s easy to take clean water for granted. Therefore, protecting our water resources from contamination is intrinsic to sustainable business and development, especially in former coal regions such as Lusatia. The Federal Ministry of Education and Research has been funding successful projects for the removal of micropollutants and pathogens from water for a number of years. ELIMIK now seeks to explore the industrial exploitation of enzymes for the removal of pharmaceutical residues in wastewater treatment plants. This protects our water resources while advancing sustainable development in Lusatia.”

Dr. Manja Schüle, Minister for Business, Research and Culture (MWFK) in Brandenburg explained, “Clean drinking water – has never been so valuable as it is today! But how can we catch pharmaceutical residues and other micropollutants from municipal wastewater? Scientists and researchers from BTU Cottbus-Senftenberg and TU Dresden are working together in the interdisciplinary ELIMIK project to find a groundbreaking answer to this question. I'm already looking forward to the new technology that will filter drinking water with the help of enzymes. Another project in Lusatia conducting research on and for the future!”

The interdisciplinary research team at BTU Cottbus-Senftenberg and TU Dresden boast outstanding expertise in the fields of enzymatic degradation, porous carbon and carrier materials. The researchers are being supported by municipal water treatment companies Stadtentwässerung Dresden GmbH and Wasserverband Lausitz.

The project is being carried out in the Enzyme Technology research group at the Institute of Biotechnology and the Technical Chemistry research group at the Institute of Materials Chemistry of the BTU Cottbus-Senftenberg as well as at TU Dresden’s International Institute Zittau and will run for a period of three years. The project is funded by the Federal Ministry of Education and Research (BMBF) as part of Coal Structural Development Act with a total of just under EUR one million.

Project partners:

Brandenburg University of Technology Cottbus-Senftenberg (BTU)

• Prof. Katrin Scheibner, Chair of Enzyme Technology (Research Association Coodinator)
  Faculty of Environmental and Natural Sciences
  Institute of Biotechnology
• Prof. Olaf Klepel, Chair of Technical Chemistry
  Faculty of Environmental and Natural Sciences
  Institute of Materials Chemistry

TUD Dresden University of Technology

• Prof. Martin Hofrichter
  Chair of Environmental Biotechnology, International Institute (IHI) Zittau, Central Academic Unit of TU Dresden

Project title: Elimination of micropollutants from municipal wastewater using immobilized enzymes (ELMIK)
Project partner: TUD Dresden University of Technology
Project duration: 2023 – 2026
Total funding for the whole project: approx. EUR 987,607.00, Federal Ministry of Education and Research (BMBF) as part of the Coal Structural Development Act

Contact:
Prof. Katrin Scheibner
Enzyme Technology Research Group
BTU Cottbus-Senftenberg
Tel.: +49 3573 85-926

Prof. Martin Hofrichter
Chair of Environmental Biotechnology
International Institute (IHI) Zittau
TU Dresden
Tel.: +49 3583 6124121