Blar i NTNU Open på forfatter "Knuutila, Hanna"
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Opportunities of small-scale hydrogen production from MSWI fly ash
Flem, Jens Petter (Master thesis, 2022)Denne avhandlingen presenterer en innledende tekno-økonomisk vurdering av mulighetene for hydrogenproduksjon fra MSWI flyveaske. Arbeidet har blitt utført i samarbeid med selskapet NOAH, som driver anlegget for avfallshåndtering ... -
Oxidative degradation of amines using a closed batch system
Vevelstad, Solrun Johanne; Grimstvedt, Andreas Magnar; Einbu, Aslak; Knuutila, Hanna; Silva, Eirik Falck da; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2013)Oxidative degradation experiments on five amines and two amino acids were performed in a new closed setup at atmospheric pressure. For most of the amines/amino acids significant degradation was not present under these ... -
Oxygen and temperature effect on formation of degradation compounds from MEA
Vevelstad, Solrun Johanne; Johansen, Maren T; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)Liquid phase degradation of MEA and the formation of 8 degradation compounds were studied at 4 different oxygen concentrations and three different temperatures. Liquid phase total nitrogen was determined and compared with ... -
Phase change solvents for postcombustion CO2 capture
Trollebø, Anastasia Aleksandrovna (Doctoral theses at NTNU;2018:32, Doctoral thesis, 2018) -
Preparing a thermodynamic framework for CO2 capture process
Mehdizadeh, Hamid (Doctoral theses at NTNU;2016:283, Doctoral thesis, 2016)Summary of thesis: Climate change, with more than 95% certainty, see IPCC 2014, is happening because of anthropogenic CO2 emissions. The easiest and fastest way to cut emissions is CO2 capture and storage. Post combustion ... -
Process Optimization of Biogas Upgrading with AMP Using Pilot Plant Data and Simulations with Aspen Plus
Lingelem, Hans-Ulrik (Master thesis, 2016)In gaseous biofuel production mixtures of CO2, CH4 and/or H2 and are typically produced. When using these gaseous for example in fuel cell applications (H2) or as vehicle fuel (CH4) gas upgrading is needed. Upgrading ... -
Researching the behaviour of aerosol emissions in an amine scrubbing system
Nesse, Ingeborg Helga Hus (Master thesis, 2021)Denne mastergradsavhandlingen undersøker oppførselen til aerosol amin utslipp fra karbonfangstanlegg som anvender kjemisk absorbsjon med aminløsemiddel for å fange CO2. Aerosol utslipp har i de siste årene fått økt ... -
Screening of Aqueous Solvent Systems for Post-Combustion CO2 Capture by Chemical Absorption
Krokvik, Iris Renate Tøkje (Master thesis, 2016)The atmospheric CO2 concentration we see today has likely not been seen before. As carbon dioxide is a strong greenhouse gas, this is a big red flag towards global warming. A higher mean temperature on earth would lead to ... -
Screening of Aqueous Solvent Systems for Post-Combustion CO2 Capture by Chemical Absorption
Krokvik, Iris Renate Tøkje (Master thesis, 2016)The atmospheric CO2 concentration we see today has likely not been seen before. As carbon dioxide is a strong greenhouse gas, this is a big red flag towards global warming. A higher mean temperature on earth would lead to ... -
Selected blended amines for postcombustion CO2 capture
Bernhardsen, Ida Mortensen (Doctoral theses at NTNU;2019:143, Doctoral thesis, 2019)Carbon capture and storage is an important climate measure for a low carbon future. The CO2 capture technology closest to implementation for post-combustion CO2 capture systems is chemical absorption with amine solvents. ... -
Simulation of Combined Hydrate Control and H2S Removal Using Aspen Plus
Lilleng, Mari Iselin (Master thesis, 2016)Removal of water (H2O) and acid gas contaminants, like hydrogen sulfide (H2S) and carbon dioxide (CO2), are essential in natural gas purification. Due to gas quality specifications and protection of installed equipment ... -
Simulation of H2S Removal from Biogas Using Aspen Plus
Paulsen, Martine (Master thesis, 2019)Biogass er en forbybar energikilde og kan brukes som en substitutt til naturgass. Biogass må renses før den kan oppgraderes til biometan. Komponenter som kan gjøre skade på prosessutstyret, som for eksempel hydrogen sulfid ... -
Simulation of Pilot Data with Aspen Plus
Witzøe, Trine (Master thesis, 2015)Over the last few decades there has been an increasing interest in climate change and global warming. It is believed that one of the major causes of the enhanced greenhouse effect, that causes global warming, is anthropogenic ... -
Simulation Study and Economical Analysis of Absorption Alternatives for Biogas Upgrading
Nettum, Kristine Maria (Master thesis, 2019)Biogass er en viktig fornybar energikilde. Ett av de største problemene ved produksjon av biogass er prisen for biogass oppgradering, dette gjør forskning på forskjellige oppgraderingsmetoder viktig for å gjøre en fornybar ... -
Stability of dehydration glycols MEG and TEG
François, Maxime (Master thesis, 2020)The offshore process of natural gas dehydration is of crucial importance in meeting the required specifications and avoiding the formation of hydrates when transporting rich gas by pipeline. Monoethylene glycol or triethylene ... -
Stability of Solvents for Gas Purification
Høisæter, Karen Karolina (Doctoral theses at NTNU;2023:293, Doctoral thesis, 2023)The main objective of this work was to increase the understanding of the chemical processes occurring as solvents used in gas purification degrade. Amine systems for CO2 capture and glycol systems for gas dehydration were ... -
Strong Bicarbonate Forming Solvents for Absorption of CO2 - Experimental Determination and Modelling of Vapor-Liquid Equilibria Data
Nøkleby, Christina (Master thesis, 2016)Absorption by amines provides a technology for CO2 capture. New solvents are of interest to ameliorate the process, and the two alkanoamines 2-piperidine-ethanol (2-PPE) and 1-(2-hydroxyethyl)-pyrrolidine (1-2HE-PRLD) were ... -
Synthesis and design of imidazole-based solvent systems for CO2 capture
Evjen, Sigvart (Doctoral theses at NTNU;2019:199, Doctoral thesis, 2019)Global oppvarming forårsaket av menneskelige klimagassutslipp er den største utfordringen verden står ovenfor. Det er et enormt behov for videreutvikling av teknologien rettet mot reduksjon av disse utslippene. Fangst av ... -
The Effect of the Absorber Design and Operating Conditions on the MEA Emissions and Energy Consumption in an Absorption-Based Carbon Capture Plant
Uhre, Susanna Sprauten (Master thesis, 2021)Industri er en av de største kildene til menneskeskapte utslipp av klimagasser. Absorpsjons- basert CO2-fangst er et viktig skadebegrensningstiltak for å redusere CO2 utslippene og sikre en bærekraftig fremtid. En av ... -
Thermal degradation on already oxidatively degraded solutions
Vevelstad, Solrun Johanne; Grimstvedt, Andreas Magnar; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2013)CO2 capture with alkanolamines has been in use since 1930, where 2-ethanolamine (MEA) is the most studied absorbent for post-combustion. In order to prevent degradation, it is important to understand the degradation ...