Blar i NTNU Open på forfatter "Knuutila, Hanna"
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Evaluation of solvents for upgrading and conditioning of high hydrogen sulphide content biogas to biomethane standards
Tugwell, Silje Maria Martinsen Tugwell (Master thesis, 2023)Det er en økende interesse for produksjon av biogass fra biomasse med høyt svovelinnhold. Det er avgjørende å separere ut CO2 og H2S før biogassen kan brukes. I denne masteroppgaven ble oppgradering og kondisjonering av ... -
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 ... -
Experimental Investigations of Single Oil Droplet Breakage in a Turbulent Water Flow
Herø, Eirik Helno (Doctoral theses at NTNU;2021:340, Doctoral thesis, 2021)Multiphase flow and the transient behavior of the dispersed phase is important to numerous industrial applications. Predictive modeling of the dispersed phase would be beneficial in designing, for example, phase separation ... -
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 ... -
Hydrogen production combining Steam Methane Reforming with Cryogenic Carbon Capture
Opheim, Lars (Master thesis, 2023)Formålet med denne rapporten var å utføre et litteratursøk og simulering av produksjon av hydrogen ved dampmetanreformering med kryogen karbonfangst, for så å skape en modell som beskriver prosessen. En modell for ... -
Impact of dissolved oxygen removal on solvent degradation for post-combustion CO2 capture
V. Figueiredo, Roberta; Srivastava, Tanya; Skaar, Tarjei; Warning, Niels; Gravesteijn, Paul; van Os, Peter; Ansaloni, Luca; Deng, Liyuan; Knuutila, Hanna; Monteiro, Juliana; Goetheer, Earl (Peer reviewed; Journal article, 2021)One of the major issues encountered in the Post Combustion CO2 Capture processes is the degradation of the solvent which can be in great part attributed to the presence of oxygen in the solution. The present report focuses ... -
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 ... -
Investigating the Influence of Water Wash Design and Operating Conditions on MEA Emissions in Amine Scrubbing
Dinh, Quyen Lily (Master thesis, 2023)Karbonfangst spiller en avgjørende rolle i bekjempelsen av den presserende utfordringen med klimaendringer. Ettersom utslippene av drivhusgasser fortsetter å øke, har behovet for effektive strategier for å redusere ... -
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 ... -
Kvantitering av nitrogenholdige degraderingsprodukter i aminløsninger
Laukvik, Marianne; Laukvik, Tonje (Bachelor thesis, 2019)I lys av økt mengde klimagasser i atmosfæren, har CO2-fangst blitt et stadig viktigere satsningsområde. Store mengder CO2 emitteres ut i atmosfæren som følge av intensivert forbrenning av fossilt brennstoff. Behovet for ... -
Machine Learning Modelling of the Oxidative and Thermal Degradation of Monoethanolamine (MEA)
Solnes, Ingvild (Master thesis, 2021)Folketallet i verden vokser, noe som fører til en økning i forbruket av ressurser og utslipp av klimagasser. Som et resultat av dette øker konsentrasjonene av klimagasser i atmosfæren til farlige nivåer, og behovet for ... -
Måling av reaksjonsvarme og gass-/væskelikevekt for CO2 fangst i solventer med to væskefaser
Nannestad, Åsne Daling (Master thesis, 2016)Absorpsjon av CO2 ved bruk av aminer er en velutviklet teknologi for CO2-fangst. Likevel er det stort forbedringspotensial ved dagens teknologi, relatert til blant annet høyt energiforbruk, degradering av aminer og ... -
Measurement and Modeling of Physical Properties of Amines
Johnsen, Birgit (Master thesis, 2013)Calibrate the high pressure viscometer at different temperatures and pressure. Measure the viscosity and density for MDEAsystems and DMMEAsystems, unloaded and loaded with CO2. Modeling of the measured properties. -
Mercury Behaviour in Gas-Condensate-Monoethylene Glycol (MEG) Systems
Haarseth, Pia Kristine (Master thesis, 2016)Gas and condensate production gets more challenging as the exploration takes place in deeper and in lower quality reservoirs. Under certain conditions, hydrate plugging is a major problem, causing damages to pipes and ... -
Modeling of Amine Degradation in a CO2 Absorption Column at Test Centre Mongstad
Henriksen, Fridtjof Finsnes (Master thesis, 2012)Two different previously conducted oxidative degradation experiments, were used as a basis of modeling monoethanolamine-degradation reactions. Literature and previous experience was used to construct reaction equations for ... -
Modeling of oxidative MEA degradation
Pinto, Diego Di Domenico; Brodtkorb, Thea Wilhelmine; Vevelstad, Solrun Johanne; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)Considerable amount of work had been recently done researching the degradation of solvents for CO2 post combustion capture, especially for the benchmark solvent MEA. The degradation of the solvent can cause plant corrosion ... -
Modeling of Reaction Calorimeter
Farzad, Reza (Master thesis, 2014)The purpose of this project was to model the reaction calorimeter in order to calculate the heat of absorption which is the most important parameter in this work. Reaction calorimeter is an apparatus which is used in ... -
Modelling of Composition and Growth of Aerosol Droplets in Absorption Columns
Majeed, Hammad (Doctoral theses at NTNU;2017:348, Doctoral thesis, 2017)To meet future energy demand and at the same time reduce our carbon footprint are main challenges of the current era. The global CO2 concentration has been increasing since the beginning of the industrial revolution and ... -
Modelling Solvent Degradation in Amine-based Post-combustion Carbon Capture
Lille-Mæhlum, Øyvind Vilfred Haugberg (Master thesis, 2021)Aminbasert karbonfangst er en teknologi som kan redusere de stadig større menneskeligskapte CO2-utslippene. Det er likevel to problemer med denne teknologien. For det første vil løsningsmiddelet som brukes for å reagere ...