Final Thesis

How to Make Membrane Processes More Efficient

Key Info

Basic Information

Unit:
Chemical Process Engineering
Type:
Masterthesis / Bachelorthesis / Projectthesis
Focus/Key Topic:
experimental / constructive / simulativ
Date:
immediately

Contact

Membrane technology is often applied for water treatment. One major limiting factor degrading the membranes’ performance is fouling. Fouling includes all processes leading to a reduced filtration performance such as pore blocking, cake formation or biofilm formation.

Methods reducing fouling are of high interest. Turbulences or high cross-flow velocities lead to higher shear-rates and induce vortices. These effects can help to reduce the deposition of solids on the membrane surface which leads to lower fouling rates. So-called turbulence promoters or static mixers are used to enhance mass transfer and to induce vortices. These promoters or mixers are e.g. spiral inserts which are placed into the membrane’s flow channel. The aim is to investigate if turbulence promoters can be applied to reduce fouling in membrane processes. Furthermore, their ability to increase the filtration efficiency shall be analyzed.

Within this thesis, one or several of the following topics can be looked at:

  • Influence of the foulant (particles, colloids, microorganisms,…)
  • CFD simulation
  • How does the geometry of the turbulence promoters influence fouling mechanisms?
  • Develop and produce (via rapid prototyping) turbulence promoters with new geometries

What you get:

  • Share your own ideas and make them part of the project
  • Experience in lab work and in membrane filtration
  • and / or get to know CFD and CAD software
  • Participation in an exciting research project
  • A comprehensive supervision

Please do not hesitate to contact me (sarah.armbruster@avt.rwth-aachen.de) if you are interested in membrane filtration and want to know more about this topic. I am looking forward to hearing from you. The topic can easily be extended or reduced to fit the scope of your thesis (Master's or Bachelor's or ... thesis).