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CO2 absorption into loaded aqueous MEA solutions: Impact of different model parameter correlations and thermodynamic models on the absorption rate model predictions
(Journal article; Peer reviewed, 2017)A two-dimensional discretized rate-based model was used for assessing the impact of correlations and/or models for VLE (thermodynamics), solubility (CO2 henry’s law constant), reaction rate kinetic models and diffusivity ... -
CO2 absorption with membrane contactors vs. packed absorbers-Challenges and opportunities in post combustion capture and natural gas sweetening
(Journal article; Peer reviewed, 2013)The present work presents a case study where membrane contactors are compared with absorption towers for post combustion CO2 capture and for natural gas sweetening. Simulations are performed using a absorber model which ... -
CO2 Acceptors for Sorption- Enhanced Steam Methane Reforming
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:130, Doctoral thesis, 2007)Sorption-enhanced steam methane reforming (SESMR) is an emerging technology for H2 production from fossil fuels with CO2 capture. The aim of the present work has been to study SESMR with a multiscale approach and to gain ... -
CO2 Capture and Power Production Integration; Optimization and Conceptual Design Studies
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:332, Doctoral thesis, 2011)The main contribution of this thesis is conceptual design consideration to improve the CO2 capture in absorption/stripping process. In the first stage the conventional configuration of capture plant is optimized. The ... -
CO2 capture and utilization by biocatalytic synthesis of carboxylic acids: a process design study
(Peer reviewed; Journal article, 2024)The search for less energy-intensive processes is pushing toward a diversification of Carbon-Capture and Utilization/Sequestration (CCU/S) pathways. Biocatalytic processes offer sustainable solutions characterized by ... -
CO2 Capture by Aqueous 3-(Methylamino)propylamine in Blend with Tertiary Amines: An NMR Analysis
(Journal article; Peer reviewed, 2017)Aqueous 3-(Methylamino)propylamine (MAPA) in blend with 2-(Diethylamino)ethanol (DEEA) and other tertiary amines, which mainly differ from DEEA in the number of hydroxyl functions (-OH) and/or in the length and structure ... -
CO2 Capture by Chemical Absorption: Kinetics and Combined Heat and Mass Transfer
(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 ... -
CO2 capture solvents; modeling and experimental characterization
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:233, Doctoral thesis, 2014)With more than 80% of the world’s energy consumption coming from the burning of fossil fuel (BP, 2013; IEA, 2013), the mitigation of greenhouse-gas from the energy sector is crucial for avoiding climate change. Amine ... -
The CO2 Capture tool for refineries: a new approach to analyze CO2 capture in a multiple stack cluster
(Journal article, 2022)There is a need to develop different strategies for refineries to decrease their CO2 emissions. Post-combustion capture allows a significant reduction of CO2 emissions in refineries, typically resulting in a scenario where ... -
CO2 capture using highly viscous amine blends in non-porous membrane contactors
(Journal article; Peer reviewed, 2018)New amine blends have shown a promising potential to reduce the energy penalty for CO2 capture in post combustion, making the deployment of carbon capture technologies one-step closer. However, their application at the ... -
CO2 in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
(Journal article; Peer reviewed, 2018)Ternary systems consisting of amphiphilic block copolymers/water/monoethanolamine (MEA) have been studied as potential solvents for carbon capture and storage (CCS). The phase behavior of two poly(ethylene oxide)-poly(propylene ... -
CO2 in Lyotropic Liquid Crystals: Phase Equilibria Behavior and Rheology
(Journal article; Peer reviewed, 2019)The CO2 absorption of liquid crystalline phases of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (Pluronic L92, (EO)8(PO)47(EO)8), monoethanolamine (MEA), and water, with a composition of 60% L92/10% ... -
Co2 Separation in Nanocomposite Membranes by the Addition of Amidine and Lactamide Functionalized POSS® Nanoparticles into a PVA Layer
(Journal article; Peer reviewed, 2018)In this article, we studied two different types of polyhedral oligomeric silsesquioxanes (POSS®) functionalized nanoparticles as additives for nanocomposite membranes for CO2 separation. One with amidine functionalization ... -
CO2 separation with carbon membranes in high pressure and elevated temperature applications
(Journal article; Peer reviewed, 2017)Carbon hollow fibers (CHF) were fabricated by carbonization of deacetylated cellulose acetate precursor. To enhance membrane permeation properties, pore structure was tailored by means of an oxidation and reduction process ... -
CO2 solubility and mass transfer in water-lean solvents
(Journal article; Peer reviewed, 2019)Shifting from aqueous to water lean solvents has been evaluated as a mean for increasing the mass transfer rates in regular chemical solvents with amines. An array of amines (monoethanolamine, 2-methylpiperazine and N-methyl ... -
CO<inf>2</inf> capture by 1-ethyl-3-methylimidazolium acetate: Solubility at low pressure and quantification of chemisorption and physisorption
(Peer reviewed; Journal article, 2021)Although chemisorptive ionic liquids (ILs) are widely expected as promising CO2 absorbents, rigorous thermodynamic analyses for such systems remain challenging due to the inevitable co-existence of chemisorption and ... -
Coalescence and Break-Up of Drops and Bubbles
(Dr. ingeniøravhandling, 0809-103X; 2002:25, Doctoral thesis, 2002)Fluid particle break-up and coalescence are important phenomena in a number of industrial processes. A Lagrangian momentum balance model for the collision process between two fluid particles has been developed and tested ... -
Coalescence Behavior of Stable Pendent Drop Pairs Held at Different Electric Potentials
(Journal article; Peer reviewed, 2020)In this work, we studied the electrocoalescence behavior of stable pendent drop pairs and compared the results with clean drops, where the interface is void of surface-active compounds. The drop phase was brine and the ... -
Coalescence of fluid particles with deformable interfaces in non-Newtonian media
(Peer reviewed; Journal article, 2021)The drainage of the non-Newtonian film between two approaching fluid particles are studied. The non-Newtonian continuous phase is a generalized Newtonian fluid that obeys the power-law model, and the deformable particle ... -
Coatability of cellulose nanofibril suspensions: Role of rheology and water retention
(Journal article; Peer reviewed, 2017)Cellulose nanofibril (CNF) suspensions are not easily coatable because of their excessively high viscosity and yield stress, even at low solids concentrations. In addition, CNF suspensions vary widely in their properties ...