Browsing by Author "Knuutila, Hanna"
Now showing items 1-20 of 30
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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) -
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 ... -
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 ... -
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 ... -
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 ... -
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. -
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 ...