ABSDEG - Solvent degradation laboratory

Facility Location
City & country
Trondheim (Norway)
Kolbjørn Hejes vei 1B, 7034
Description & contacts of the access provider
Legal name of organisation
NTNU - Norwegian University of Science and Technology (Norges teknisk-naturvitenskapelige universitet)
Infrastructure contact - Primary contact
Hanna Knuutila
RICC contact - Secondary contact
Morten Grønli
Facility Availability
Unit of access
Availability per year
Minimum 4 weeks
Expected duration of single experiment:
2-5 weeks
Operational or other constraints
Specific risks:
All equipment located in fume hoods. Each solvent and gases used, will be risk assessed. The risk assessment can lead into higher cost due to increase HSE-requirement.
Legal issues

Solvent degradation and corrosion can be a show-stopper for process and solvent development. Amount of degradation is one of the factors that dictate the need for solvent make-up. In addition to degradation contributing to higher cost connected to solvent make-up, some of the degradation compounds formed have unwanted properties as high corrosivity or high volatility. For example, volatile degradation compounds might escape from the absorber and results in increased  environmental impact of the process if not properly controlled. Furthermore, fundamental understanding of the corrosion and degradation are the key when developing countermeasures for degradation. Understanding the connection of different process parameters and degradation compounds present  is therefore of high interest.

Description of the facility

The facility contains setups to study solvent degradation. This installation includes 3 apparatuses.

  • The oxidative degradation in a batch reactor is suitable for degradation studies at absorber temperatures (45-60oC). The setup is suitable for example for testing of effect of loading and oxygen concentration on degradation.  Also effect of metals can be studied.
  • Thermal degradation tests in metal cylinders up to 150oC. The amount of CO2 and access to metals can be controlled by placing a glass tube inside the cylinder. These tests also give some indication on the corrosivity of the solvent.
  • With the screening apparatus for oxidative degradation, it is easy to test degradation and corrosion inhibitors, or degradation with varying solvent concentration.  
Screening apparatus for oxidative degradation
Setup for oxidative degradation
Titration setup and TOC/TIC/NT analyser
State of the art, uniqueness, & specific advantages
  • With these setups it is possible separate the oxidative degradation and thermal degradation to study the underlying degradation and corrosion mechanisms
  • The installations C1.3, C1.4 and C1.5 are designed for CO2 capture research and located in the same building. This allows easy use of these different TA during one visit.
  • The laboratory has a close co-operation with external analytical laboratory (SITNEF Industry) offering services to analyse liquid samples for degradation products and specific amines.
Scientific Environment
  • We have basic analytical possibilities (amine and CO2 titration methods and TOC/TIC/NT) available in our labs. Analytical laboratory at SINTEF Industry (Biotechnology and Nanomedicine –department), located in the same campus offers good possibilities to analyse the solutions for degradation compounds.
  • The setups are used by master and PhD-students as well as researchers. We have a close co-operation with Department of Process Technology in SINTEF Industry. Through exchange of PhD students and research personnel, we currently collaborate with CSIRO (Australia) and Department of Chemical Engineering, University of Austin, Texas.  

selected publications

Fytianos, Georgios; Ucar, Seniz; Grimstvedt, Andreas Magnar; Hyldbakk, Astrid; Svendsen, Hallvard Fjøsne; Knuutila, Hanna K. (2016)
Corrosion and degradation in MEA based post-combustion CO2 capture
International Journal of Greenhouse Gas Control. vol. 46.
Fytianos, Georgios; Vevelstad, Solrun Johanne; Knuutila, Hanna K. (2016)
Degradation and corrosion inhibitors for MEA-based CO2 capture plants
International Journal of Greenhouse Gas Control. vol. 50
Vevelstad, Solrun Johanne; Johansen, Maren T; Knuutila, Hanna K; Svendsen, Hallvard Fjøsne (2016)
Extensive dataset for oxidative degradation of ethanolamine at 55-75 °C and oxygen concentrations from 6 to 98%
International Journal of Greenhouse Gas Control. vol. 50
Fytianos, Georgios; Callot, Robin; Svendsen, Hallvard Fjøsne; Knuutila, Hanna K. (2015)
Quantitative determination of amines used in post-combustion CO2 capture process by ion chromatography
International Journal of Greenhouse Gas Control. vol. 42
Eide-Haugmo, I., Lepaumier, H., Einbu, A., Vernstad, K., Falck da Silva, E., Svendsen, HF. (2011)
Chemical stability and biodegradability of new solvents for CO2 capture
Energy Procedia, Volume 4, 2011, Pages 1631-1636