Disputation: Sumudu Karunarathne

Sumudu Karunarathne at campus Porsgrunn holds a trial lecture and disputation on June 18.

18 Jun

Practical information

  • Date: 18. June 2020
  • Time: 09.30 - 17.00
  • Location: Campus Porsgrunn
  • Follow the disputation live at Zoom 

    (click on the link that becomes active when the program starts)


    The trial lecture starts at 0930 AM

    The PhD defense starts at 1200 AM

    Evaluation committee

    • First opponent: Associate professor Kaj Thomsen, DTU Chemical Engineering.
    • Second opponent: Dr. Karl Anders Hoff, SINTEF Industry.
    • Administrator: Associate professor Wenche Hennie Bergland, USN.


    • Principal supervisor: Professor Lars Erik Øi, USN.
    • Co-supervisor: Professor 2 Dag-Arne Eimer, USN.


Sumudu Karunarathne, candidate in the PhD programme Process, Energy and Automation Engineering at Faculty of Technology, Natural Sciences and Maritime Sciences, will be defending his thesis for the degree of philosophiae doctor (PhD).

Title of thesis: «Physicochemical data for amine based CO2 capture process».

Trial lecture topic: «Current status and climate mitigation potential of CO2 utilization technologies».

Nærbilde av Sumudu Karunarathne

The trial lecture an the PhD defense will be held on Zoom on June 18.


The amine-based post-combustion CO2 capture from flue gas is a highly discussed CO2 capture method. Currently, several large and pilot scale facilities are operated around the world. The knowledge and understanding of the physicochemical properties of amine solutions are essential to design processes and equipment.

The main objective of this study is to measure the physicochemical properties of amine solutions by performing laboratory experiments. Accordingly, research work discusses the density and viscosity of different aqueous amine solutions with and without CO2 under different amine concentrations and temperatures. The effects of amine concentration, temperature and CO2 loadings on density and viscosity were reported. The existing measured data and correlations were reviewed and new correlations were developed to represent measured data with acceptable accuracies.

The uncertainty involved in the measuring methods were analyzed to investigate the quality of the measured data. The characteristics of the intermolecular interactions among molecules in the mixtures were discussed using measured densities and viscosities. Presented data and correlations in the thesis will be useful in both process design and simulations.