Institutt for kjemisk prosessteknologi: Nye registreringer
Viser treff 21-40 av 1748
-
Microfluidic investigation of enhanced oil recovery: The effect of aqueous floods and network wettability
(Peer reviewed; Journal article, 2021)Rock wettability significantly influences underground oil extraction efficiency during enhanced oil recovery (EOR) processes. We experimentally examine the effect of wettability on oil recovery at pore-scale using ... -
Responses of Rat Mesenchymal Stromal Cells to Nanocellulose with Different Functional Groups
(Peer reviewed; Journal article, 2023)Cellulose nanofibrils (CNFs) are multiscale hydrophilic biocompatible polysaccharide materials derived from wood and plants. TEMPO-mediated oxidation of CNFs (TO-CNF) turns some of the primary hydroxyl groups to carboxylate ... -
Proper orthogonal decomposition modal analysis in a baffled stirred tank: a base tool for the study of structures
(Peer reviewed; Journal article, 2023)Proper orthogonal decomposition (POD) is applied to three-dimensional (3-D) velocity fields collected from large-eddy simulations (LES) of a baffled stirred tank. In the LES, the tank operates with a Rushton-type impeller ... -
Characterization and assessment of wax and wax inhibitors systems in microfluidic oil-in-water coalescence experiments
(Journal article; Peer reviewed, 2022)During produced water treatment, one of the key underlying phenomena affecting separation performance is coalescence between oil droplets. These processes can be affected by several factors, including chemical composition ... -
Combined Influence of High Pressure and High Temperature on the Removal of Crude Oil from Water during Laboratory-Scale Gas Flotation
(Journal article; Peer reviewed, 2023)Produced water (PW) is the major byproduct and the largest waste stream in petroleum production. Handling this water is a major issue in the oil industry. Gas flotation has proven to be an effective topside separation ... -
Predicting Silica Deposition from Superheated, Pressurized Steam Using Numerical Modeling of Nucleation, Agglomeration and Deposition
(Peer reviewed; Journal article, 2023)A model that can be used to quantify silica deposition from superheated depressurized steam is developed. Classical nucleation theory, agglomeration and deposition onto a wall are combined in a numerical model that calculates ... -
Physical absorption of carbon dioxide in imidazole-PTSA based deep eutectic solvents
(Peer reviewed; Journal article, 2021) -
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 ... -
An integrated materials approach to ultrapermeable and ultraselective CO2 polymer membranes
(Peer reviewed; Journal article, 2022)A challenge in the design of polymeric membranes for gas separation is the tradeoff between permeability, or how fast gases can flow through the membrane, and selectivity, the ability to separate one gas from another. In ... -
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 ... -
Experimental and theoretical study on efficient CO2 absorption coordinated by molecules and ions of DBN and 1,2,4-triazole formed deep eutectic solvents
(Peer reviewed; Journal article, 2023)Deep eutectic solvents (DESs) as a new class of designer solvents have attracted intensive attention in CO2 capture, while the interactions between CO2 and underlying molecules and/or ions in DESs are poorly understood. ... -
Capturing CO2 by ionic liquids and deep eutectic solvents: A comparative study based on multi-level absorbent screening
(Peer reviewed; Journal article, 2023)Because of the high energy consumption and volatility of organic amine solvents in conventional CO2 capture processes, ionic liquids (ILs) and deep eutectic solvents (DESs) have been widely expected as alternative CO2 ... -
A new facility for viscosity and density measurements for CO2 – rich mixtures relevant for CO2 transport and storage
(Journal article, 2022)For safe and cost-effective design, optimization, and operation of CO2 capture, transport, and storage (CCS) processes, accurate viscosity and density data of CO2-rich mixtures are required. Currently, there are large ... -
Development of high capacity moisture-swing DAC sorbent for direct air capture of CO<inf>2</inf>
(Peer reviewed; Journal article, 2023) -
Oxidative degradation of triethylene glycol
(Peer reviewed; Journal article, 2024)Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ... -
Recent advances in the design and use of Pickering emulsions for wastewater treatment applications
(Journal article, 2023)Pickering emulsions have recently emerged as versatile systems capable of targeting many applications of wastewater treatment. The unique properties, which include high emulsion stability, easy preparation, low toxicity, ... -
Thin film nanocomposite membranes fabricated via 2D ZIF-67 nanosheets and 1D nanofibers with ultrahigh water flux for dye removal from wastewater
(Journal article; Peer reviewed, 2024)Thin-film nanocomposite (TFN) membranes based on metal–organic frameworks (MOFs) have received increasing attention in the field of water treatment. However, TFN membranes with both high permeance and rejection rates are ... -
Development of ion exchange membranes for resource recovery and impurity removal in electrodialysis
(Doctoral theses at NTNU;2023:416, Doctoral thesis, 2023)In metal production and processing, large amounts of aqueous streams containing both metallic and non-metallic species are generated when extracting the desired bulk metals. While some of the remaining diluted compounds, ... -
Physical properties and reaction kinetics of CO2 absorption into unloaded and CO2 loaded viscous monoethanolamine (MEA) solution
(Journal article, 2021)In order to comprehensively understand how solvent free concentration and high viscosity affect mass transfer and consequently absorption flux, CO2 absorption kinetics into unloaded and CO2 loaded viscous monoethanolamine ...