Final Thesis

Microstructured Hollow Fiber Membranes

Key Info

Basic Information

Chemical Process Engineering
Masterthesis / Bachelorthesis
Focus/Key Topic:


Membrane’s geometry evolution in order to make water treatment as well as medical applications even more sustainable and efficient is unstoppable. Our novel Helical Ridge Membrane geometry promotes the formation of secondary flow and therefore mixing during filtration. Both enhances the overall performance, operation cost and lifetime of the membrane.

Helical Ridge Membranes comprise the conventional hollow fiber geometry of a tube featuring a helically wound ridge on the tube’s inner surface. This surface pattern disturbs the mean flow and promotes mixing. We fabricate Helical Ridge Membranes with the standard dry-jet wet spinning technique utilizing a highly specialised setup. Additive manufacturing enables us to manufacture specifically designed 3D printed, microstructured spinnerets to create the ridge on the tube’s inner surface. To further twist the ridge helically, we apply our home-engineered Spinning² setup, which allows rotating the spinneret during hollow fiber spinning.

Constructional development of the existing spinneret design concept, fabrication of Helical Ridge Membranes, examination of filtration experiments for membrane performance evaluation or simulation of flow patterns on the inner Helical Ridge Membrane’s side. I have various exciting topics to offer.

If you want to know more, do not hesitate to contact me. I will show you around in our labs and introduce you to the project and your specific assignments. I am curious about your interest!

The work provides you.

  • Membrane fabrication| Deep understanding of a fundamental field of membrane technology
  • Experimental work| Experience in lab work, design of experiments and advanced membrane characterisation
  • Creativity| Development and execution of individual, creative ideas and concepts
  • 3D printing| Skills in 3D-CAD software and utilization of future-leading 3D printing techniques
  • Teamwork| An extensive supervision by the scientific researcher as well as a supporting team of thesis students and research assistants (HiWis)

You should offer.

  • Self-dependent, systematically and structured working attitude
  • Interest in experimental work and mechanical design
  • Willingness to try out something new
  • Ability to work in a team