Final Thesis

LbL-membranes for usage in organic solvents

Key Info

Basic Information

Chemical Process Engineering
Focus/Key Topic:


Nanofiltration (NF) is a pressure driven membrane process. It enables selective separation of solutes on a molecular level. In contrast to common processes (e.g.: Distillation, Crystallization, etc.) NF can be operated under near ambient conditions (neither requiring high temperatures nor change of state). Special fields in NF is the organic solvent nanofiltration (OSN) and the solvent tolerant nanofiltration (STNF). In this case, the medium consists of organic solvent (OSN) or of organic aqueous mixtures (STNF). At the moment there are only a few full-scale applications. However, the attention of chemical and pharmaceutical industry increases vastly due to high potential savings in energy and resources.

At AVT.CVT we investigate systematically these emerging processes in order to gain an in-depth understanding of observed phenomena. In addition, we investigate layer-by-layer coatings to produce easily new nanofiltration membranes. Such membranes offer a big potential for usage in OSN and STNF.

The task for this thesis is to coat new membranes and plan and conduct characterization experiments. In particular, the performance in organic solvents should be considered. The results gained should be compared to known data. Finally we want to deduce correlations between interaction of solvent, solutes and membrane/coating.

You should:

  • be curious about puzzling phenomena
  • enjoy experimental work
  • be accurate, careful and independent in work
  • deductive reasoning

You get:

  • participation in innovative research
  • in-depth knowledge of nanofiltration processes, in particular OSN and STNF
  • knowledge of layer-by-layer coatings
  • experience in laboratory and analytics
  • comprehensive support

The thesis will be lead by Johannes Kamp and Axel Böcking. If you are interested do not hesitate to contact us. Telephone: 0241-80 47897 (Kamp) 0241-80 29971 (Böcking) - e-mail: and