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dc.contributor.authorBuvik, Vanja
dc.contributor.authorBernhardsen, Ida
dc.contributor.authorFigueiredo, Roberta V.
dc.contributor.authorVevelstad, Solrun Johanne
dc.contributor.authorGoetheer, Earl L.V.
dc.contributor.authorvan os, peter
dc.description.abstractThis work aims to understand oxygen solubility in pure and aqueous amine solvents for CO2 capture. Commercially available dissolved oxygen sensors were studied to evaluate whether these can be used for measuring oxygen solubility in the carbon capture processes. It also aims to understand the possible discrepancies from realistic concentrations of oxygen when using a dissolved oxygen sensor. Two independent measurement principles were used for this purpose, both electrochemical and optical. Furthermore, a Winkler titration method was used to aid the validation of the sensors as well as understanding salting-out effects. A simple model for predicting oxygen solubility in CO2-loaded ethanolamine solutions was made, which also has potential for predicting oxygen solubility in other loaded amine solutions. The results of the study show that dissolved oxygen sensors may be applied for measurement of oxygen concentrations in amine solutions and that different amines and different concentrations in water only show small variations in oxygen solubility. The sensors may also be used in CO2-loaded amine solutions, but here the increased conductivity of the solution may give a higher measured concentration of oxygen, than it is in reality. In ethanolamine, the consumption of oxygen is faster than the mass transfer of oxygen from gas to liquid phase, giving lower concentrations of oxygen than it should be in absence of a chemical reaction between oxygen and amine.en_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleMeasurement and prediction of oxygen solubility in post-combustion CO2 capture solventsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalInternational Journal of Greenhouse Gas Controlen_US
dc.relation.projectNorges forskningsråd: 257579en_US
dc.description.localcode2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal