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Supervision of Bachelor's and Master's theses

Interested in process engineering?

We offer supervision for bachelor's and master's theses in the field of process engineering.

Why a Bachelor or Master in Process Engineering? The "Young Process Engineers" created a brochure that offers an insight into the diverse and exciting tasks of a process engineer. Get more information!, opens a file (sorry, only in german available)

Inquire about current topics directly with Prof. Hlawitschka mark.hlawitschka@jku.at.



Membrane extraction: extraction of lactic acid

Extraction of lactic acid from an aqueous solution in a membrane extraction unit.

The aim of this work/thesis is the extraction of lactic acid from an aqueous solution. The extraction is carried out continuously on a membrane extraction unit. For this purpose, parameters such as phase relationship, flow rate and concentrations (lactic acid, extraction agent) are to be investigated.

Literature research

  • Previous work on this topic
  • Find suitable extraction agents

Commissioning of the membrane extraction plant

  • Final leakage test
  • Calibration of the measuring units
  • Phase control

 Plant operation

  • Extraction rate/ yield
  • Dependencies: Phase ratio, flow rate, concentrations


Recycle lithium-ion batteries

Lithium-ion batteries have become an indispensable part of our everyday lives. At the end of their service life, the batteries can be used as a secondary source of raw materials. In addition to lithium, the elements cobalt and nickel are of particular interest. They are found in the active material of the rechargeable battery. Using chemical processes, the metals are first broken down and separated hydrometallurgically.

We offer bachelor theses on the following topics:

Literature research: Leaching of lithium-ion batteries

The objective of this paper is to conduct a literature review on the leaching process of the active material. The state of the art as well as the state of research shall be summarized and compared on the basis of current papers. Based on the research, a recommendation for a process engineering plant shall be made. The materials/material quantities used, energy requirements and costs are to be estimated and evaluated.

Literature research on the following topics:

  •     Basic procedures for leaching lithium-ion batteries.
  •     Used starting material (lithium-ion battery types)
  •     Optimal parameters and yields
  •     Recommendation for process plant

Design of a plant for leaching of lithium-ion batteries

  •     Material quantity requirement
  •     Energy demand

    Costs for reactants, electricity, etc.

Electrolysis of lithium-ion batteries

The aim of this work is to set up and commission a trainer for investigating the electrolysis of active material. The trainer will be used to investigate parameters such as voltage, current intensity and current density on the yield of metals (Li, Co, Mn, Ni).

  • Construction of a trainer for the electrolysis of lithium-ion batteries
  • First examination of operating parameters
    • Voltage
    • Acid concentration
  • Validation of the test results
  • Optimization of the test stand

Supervisor: Dr.-Ing. Alexander Keller

This bachelor thesis will be offered starting in May 2022.

If you are interested please contact the supervisor.


Current Master Thesis Topic

process engineering is exciting, membrane technology efficient and ecological!

Your Master's thesis for the future!

Membrane distillation for desalination is an attractive research topic worldwide.
This technology for water treatment, especially for desalination of seawater and highly saline industrial waste streams using low-carbon energy sources, such as low-carbon waste heat or solar energy.
A topic of the future!


  • Scientific processing of the membrane distillation crystallisation project (MDC).
  • Carrying out investigations on fractional crystallisation and characterisation of NaCl, CaCO3 and MgSO4.
  • Investigate nucleation and growth kinetics in the presence of seeds in AGMDC.
  • Determination of suitable operating conditions to control the shape, size, size distribution and polymorphism of crystals in a metastable concentration/temperature zone.
  • Set-up of the MDC facility.
  • Extensive measurements at the MDC facility.

You are also welcome to develop a research topic (e.g. for a student research project or doctoral thesis).

For further information, please contact  Prof. Mark Hlawitschka.


Illustration of a membrane distillation plant for desalination