ABSEQ - Thermodynamic studies package

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:
To get enough data suitable for modelling or process evaluations, several experiments are needed. Therefore minimum amount of time required is typically 4-12 weeks depending on the objectives.

The package offers a possibility to study the vapour-liquid equilibrium and heat of absorption. The low temperature VLE apparatuses can be used to measure vapor-liquid equilibrium of loaded absorption liquids up to 80ºC and up to 90 vol% CO2. It is also possible to measure liquid-solid-gas equilibrium up to 80ºC. High temperature and pressure VLE apparatuses allow measurement of VLE up to 150ºC and 20 MPa. Several reactor calorimeters available, suitable for heat of reaction measurements up to 20 bar and 200ºC.

Low pressure VLE apparatus
reactor calorimeter
reactor calorimeter
State of the art, uniqueness, & specific advantages

The installations TA1.3, TA1.4 and TA1.5 are designed for CO2 capture research. In-house activity based thermodynamic and kinetic models can be used to model the experimental results. The laboratory has a close co-operation with analytical laboratory (SITNEF Biotechnology), which makes it possible to analyse liquid samples for degradation products and amines. Additionally NMR can be used to find the speciation in the liquid.

Scientific Environment

Measurement of thermodynamic data, like VLE and heat of absorption, needed for example in process

selected publications

Sholeh Ma’mun et al. (2007)
Kinetics of the Reaction of Carbon Dioxide with Aqueous Solution of 2- ((2Amino(ethylamino) ethanol”
Ind. Eng. Chem. Res., 46, 385-394
Hartono A. et al. (2008)
Solubility of N2O in aqueous solution of Diethylenetriamine
J.Chem Eng. Data, 53, 2696-2700
Knuutila, H et al. (1 December 2010)
Kinetics of the reaction of carbon dioxide with aqueous sodium and potassium carbonate solutions. Chemical Engineering Science
Volume 65, Issue 23, Pages 6077-6088.
Luo, X et al. (2012)
Comparative kinetics of carbon dioxide absorption in unloaded aqueous monoethanolamine solutions using wetted wall and string of discs columns.
Chemical Engineering Science;Volum 82. s. 31-43
Kim I. et al. (2009)
Enthalpy of absorption of CO2 with alkanolamine solutions predicted from reaction equilibrium constants
Chem. Eng. Science, 64, pp2027-2038
Qin F. et al. (2010)
Study of the Heat of Absorption of CO2 in Aqueous Ammonia: Comparison between Experimental Data and Model Predictions
Ind. Eng. Chem. Res., 49(8), pp3776- 3784