Final Thesis

Modelling sustsainable ex situ carbon capture and its analysis

Key Info

Basic Information

Process Systems Engineering
Masterthesis / Bachelorthesis
Focus/Key Topic:


It is commonly approved that the increase of carbon dioxide concentration in the atmosphere since the beginning of the industrial revolution is decisively responsible for global warming. In many industrial processes high CO2 emissions are still common. The cement industry is one of the worldwide main CO2 issuers with a share of about 5%. On the one hand CO2 is produced by the thermal decomposition of calcium carbonate, on the other hand with temperatures of 1400°C during the process high amounts of fossil primary energy soures are needed. In order to prevent a further strong increase of global carbon dioxide concentration new concepts for the reduction of CO2 emissions of such processes have to be developed.

Since cement cannot be replaced easily, an innovative approach is to bind previously produced CO2 sustainably to a mineral (magnesium) in a furhter process. The product magnesite can then be partly added to cement and thus the CO2 balance of the cement process can be improved.

For the realisation of such a process a conceptualization on the basis of mathematical models is indispensable. It has become apparent that the relatively slow binding reaction of CO2 to magnesium is best realized at high temperature and pressure in an aqueous solution. With the use of the process development software gPROMS and the software package for electrolyte thermodynamic gSAFT the precipitation of magnesite from the aqueous solution is to be modelled. Following, the model is to be integrated into a comprehensive model, so that the whole reaction chain dependent on temperature, pressure and pH value can be simulated. Finally, a sensitivity analysis in the area of published "optimal" carbonation parameters is to be conducted in order to make a qualitative statement on published parameter data.

What you should bring:

  • General interest in simulative work
  • Enthusiasm for the development of climate friendly processes
  • Basic knowledge of programming is beneficial

What is offered to you:

  • A current research topic with a strong reference to the climate problem
  • An exciting thesis where you will always have a contact partner
  • Extension of your programming skills

If you are convinced by the topic, just email your CV and grade report.