Blar i NTNU Open på forfatter "Knuutila, Hanna"
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Absorption of CO2 in lyotropic liquid crystals
Rodriguez Fabia, Sandra; Øyen, Marita; Winter-Hjelm, Nicolai; Norrman, Jens; Lund, Reidar; Sørland, Geir; Knuutila, Hanna; Sjøblom, Johan; Paso, Kristofer Gunnar (Peer reviewed; Journal article, 2020)Vapor–liquid equilibria data of three poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)/water liquid crystals (LCs) with CO2 has been obtained up to 6 bar. The investigated LCs consist of 60% (EO)3(PO)50(EO)3 ... -
Activity-based Kinetics of the Reaction of Carbon Dioxide with Aqueous Amine Systems. Case studies: MAPA and MEA
Monteiro, Juliana Garcia Moretz-Sohn; Pinto, Diego Di Domenico; Luo, Xiao; Knuutila, Hanna; Hussain, Saddam; Mba, Emmanuel; Hartono, Ardi; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2013) -
Calorimetric measurements with CO2 capture solvents - Heat capacity, Cp, measurements for loaded and unloaded alkanolamine solutions using CPA202 Reaction Calorimeter
Amundsen, Paul Magne (Master thesis, 2015)Most chemical and physical processes are accompanied by heat effects, which may contain significant information concerning the mechanisms of the processes. Quantitative knowledge of the thermodynamic properties of CO2 ... -
Carbon dioxide capture with carbonate systems
Knuutila, Hanna (Doktoravhandlinger ved NTNU, 1503-8181; 2009:115, Doctoral thesis, 2009) -
Characterization of a solvent for chemical absorption-based CO2 capture
Bunevska, Tanja (Master thesis, 2021)The diploma thesis is focused on the thermodynamic characterization of an aqueous 3-amino-1-propanol (AP) solution, which is used as a promising solvent for post-combustion CO2 capture from exhaust gases. The theoretical ... -
CO2 Capture by Chemical Absorption: Kinetics and Combined Heat and Mass Transfer
Putta, Koteswara Rao (Doctoral theses at NTNU;, Doctoral thesis, 2017)Currently, global warming is an alarming issue. Tremendous efforts are being made in the research area to develop new and improved CO2 capture technologies in recent years. Many small-scale pilot test rigs and semi-industrial ... -
Combined subsea hydrate control and H2S removal
Shoukat, Usman (Doctoral theses at NTNU;2019:127, Doctoral thesis, 2019)In Norway natural gas production mostly comes from offshore facilities and contains impurities such as acid gases (hydrogen sulfide (H2S) & carbon dioxide (CO2)), water vapor, and mercury, etc. These impurities can cause ... -
Corrosion and degradation in amine based post-combustion CO2 capture
Fytianos, Georgios (Doctoral thesis at NTNU;2016:98, Doctoral thesis, 2016)Consumption of coal is expanding, and without CO2 capture and storage (CCS) or some other advanced coal combustion system, the most emission intensive gas, CO2, will continue to worsen climate change. Among the various ... -
Decomposition of nitrosamines in aqueous monoethanolamine (MEA) and diethanolamine (DEA) solutions with UV-radiation
Knuutila, Hanna; Svendsen, Hallvard Fjøsne; Asif, Naveed (Journal article; Peer reviewed, 2014)CO2 capture based on chemical absorption using amine solutions is considered to be the most feasible way to remove CO2 from low pressure sources. However, amines, when exposed to nitrous oxides, may form nitrosamines which ... -
Degradation of Amines
Johansen, Maren Teresa (Master thesis, 2013)In view of the rising amounts of greenhouse gases in the atmosphere, preventing CO2 emissions has become increasingly important. The combustion of fossil fuels for energy production and transportation is a large contributor ... -
Density measurements and modelling of loaded and unloaded aqueous solutions of MDEA (N-methyldiethanolamine), DMEA (N,N-dimethylethanolamine), DEEA (diethylethanolamine) and MAPA (N-methyl-1,3-diaminopropane)
Pinto, Diego Di Domenico; Monteiro, Juliana Garcia Moretz-Sohn; Johnsen, Birgit; Svendsen, Hallvard Fjøsne; Knuutila, Hanna (Journal article; Peer reviewed, 2014) -
Destruction of nitrosoamines with UV-light
Knuutila, Hanna; Svendsen, Hallvard Fjøsne; Asif, Naveed (Journal article; Peer reviewed, 2013)In this paper the destruction of nitrosamines (NDMA and NDELA) in 30wt% MEA, 50wt% DEA and water wash solutions with UV-irradiation are presented and linked to measured penetration depths of UV- light. The results show ... -
Effect of MEA's degradation products on corrosion at CO2 capture plants
Fytianos, Georgios; Grimstvedt, Andreas Magnar; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)Amine degradation and corrosion can be a severe operational problem in the CO2 absorption process. In this paper the effect of MEA's degradation products on corrosion is studied. Different solutions of MEA 30wt% containing ... -
Effect of Solvent Composition on Solvent Properties of Non-Aqueous and Low Aqueous Solvents
Caballero Ponce, Gonzalo José (Master thesis, 2018)The high amounts of CO2 emissions can be minimized by applying Carbon Capture and Storage (CCS) technology. Chemical absorption with amines, or amine scrubbing, is one of the available technologies. In this technology, a ... -
Electric steam methane reforming - Economical and environmental implications of replacing methane with electricity for heating in a steam methane reformer
Bukkholm, Ida Synnøve (Master thesis, 2021)Grønn energi har fått en trekkraft som et resultat av økt fokus på bærekraft, og det blir forsket på mer enn noen gang før. Ettersom fossile brennstoff er skadelig for miljøet, er det på tide at de byttes ut. Hydrogen er ... -
Experimental assessment of the oxidation inhibitor KI on fresh and pre-used amines
Thorstad, Silje (Master thesis, 2021)Økningen i den globale overflatetemperaturen er et alvorlig verdensomspennende problem som kan føre til katastrofale konsekvenser. Antropogene karbondioksid (CO2) utslipp fra kraftverk som bruker fossilt drivstoff er en ... -
Formation et destruction de NDELA dans des solutions de 30%m de MEA (Monoétha-nolamine) et de 50%m de DEA (Diéthanolamine)
Knuutila, Hanna; Asif, Naveed; Vevelstad, Solrun Johanne; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)The formation of nitrosodiethanolamine (NDELA) in a lab scale pilot was studied by feeding known amounts of nitrogen oxide and nitrogen dioxide into the gas entering the absorber. In the same pilot, the destruction by ... -
Influence of experimental setup on amine degradation
Vevelstad, Solrun Johanne; Grimstvedt, Andreas Magnar; Knuutila, Hanna; Silva, Eirik Falck da; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)Chemical stability of amines under CO2 capture conditions is a well known problem both for process operability and related to economy and environmental issues. Many degradation studies have been conducted under different ... -
Kinetics of CO2 Absorption by Aqueous 3-(methylamino)propylamine Solutions: Experimental Results and Modeling
Monteiro, Juliana Garcia Moretz-Sohn; Hussain, Saddam; Majeed, Hammad; Mba, Emmanuel; Hartono, Ardi; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014) -
Kinetics of CO2 Absorption by Aqueous 3-(methylamino)propylamine Solutions: Experimental Results and Modeling
Monteiro, Juliana Garcia Moretz-Sohn; Hussain, Saddam; Majeed, Hammad; Mba, Emmanuel; Hartono, Ardi; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014-07-09)Experimental data and a model for the initial kinetics of CO2 into 3-(methylamino)propylamine (MAPA) solutions are presented in work. MAPA has been tested as an activator for tertiary amines with encouraging results. The ...