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Performance Investigation of Membranes Suitable for Osmotic Membrane Pressure Actuators
(Master thesis, 2014)Polybenzimidazole (PBI) membrane performance having hydrocarbons mixed with the feed water was investigated. Forward osmosis (FO) and pressure retarded osmosis (PRO) experiments were performed with different ratios of ... -
Performance of MAPA promoted tertiary amine systems for CO2 absorption: Influence of alkyl chain length and hydroxyl groups
(Journal article; Peer reviewed, 2017)Absorption and desorption of CO2 into five aqueous tertiary amine solvents and their blends with MAPA were studied using a screening apparatus. Results showed that MAPA significantly enhanced both CO2 absorption rate and ... -
Performance of mixed matrix membranes containing porous two-dimensional (2D) and three-dimensional (3D) fillers for CO2 separation: A review
(Journal article; Peer reviewed, 2018)Application of conventional polymeric membranes in CO2 separation processes are limited by the existing trade-off between permeability and selectivity represented by the renowned upper bound. Addition of porous nanofillers ... -
Performance of Mn-based H2S sorbents in dry, reducing atmosphere – Manganese oxide support effects
(Journal article; Peer reviewed, 2017)High temperature H2S sorbents comprising manganese oxide (15 wt.%) supported on TiO2, ZrO2, CeO2 and Al2O3 were prepared by wet impregnation using Mn(NO3)2·4H2O as Mn precursor. Upon activation in H2, the sorbent performance ... -
Performance of Nanocomposite Membranes Containing 0D to 2D Nanofillers for CO2 Separation: A Review
(Journal article; Peer reviewed, 2018)Membrane technology has the potential to be an eco-friendly and energy-saving solution for the separation of CO2 from different gaseous streams due to the lower cost and the superior manufacturing features. However, the ... -
Personalized medicine for patients with COPD: where are we?
(Journal article; Peer reviewed, 2019)Chronic airflow limitation is the common denominator of patients with chronic obstructive pulmonary disease (COPD). However, it is not possible to predict morbidity and mortality of individual patients based on the degree ... -
Perspectives on the Effect of Water in Cobalt Fischer-Tropsch Synthesis
(Journal article; Peer reviewed, 2017)Water is an inherent component in Fischer–Tropsch synthesis on Co catalysts, and the effect of water is discussed with an emphasis on alumina and aluminates as support materials. Water may affect the selectivity, activity, ... -
A Petlyuk distillation column dynamic analysis: Hysteresis and bifurcations
(Peer reviewed; Journal article, 2020)Thermally coupled distillation columns (TCDC) have proven to be a superior and feasible alternative compared to conventional distillation. However, their inherent system complexity presents optimization and operational ... -
Phase change solvents for postcombustion CO2 capture
(Doctoral theses at NTNU;2018:32, Doctoral thesis, 2018) -
Phase equilibria in polyethylene systems
(Dr.ingeniøravhandling, 0809-103; 2000:47, Doctoral thesis, 2000)The background for this work is a need to better understand the production of high density polythylene (HDPE). HDPE particles grow in a loop slurry reactor, and particle swelling and slurry viscosity are critical parts in ... -
Phase Inversion, Stability and Destabilization of Model and Crude Oil Water-in-Oil Emulsions
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:352, Doctoral thesis, 2014)The demand for crude oils has constantly been increasing forcing the industry to exploit heavier crude oils. These oils are more difficult to produce and transport than classical light oils, this leads the oil industry to ... -
Phosphorus deactivation on co-based catalysts for Fischer-Tropsch
(Peer reviewed; Journal article, 2023)The effect of phosphorus on a cobalt-based catalyst for Fischer-Tropsch Synthesis (FTS) has been investigated. Phosphorus is an impurity present in biomass and, in this work, its deposition on the catalyst during biomass ... -
Photocatalytic H2-production through photo-reforming of hydrocarbons - Synthesis and Photocatalytic appliacation of TiO2 Nanotubes
(Master thesis, 2015)The main purpose of this Project is the study of the photocatalytical process of reforming alcohols in order to produce Hydrogen, using TiO2 nanotubes as a precursor of the catalyst, and Copper as the electron transfer ... -
Physical absorption of carbon dioxide in imidazole-PTSA based deep eutectic solvents
(Peer reviewed; Journal article, 2021) -
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 ... -
PID Control of Unstable Processes: Temperature Control of an Unstable CSTR
(Master thesis, 2013)Being able to control temperature in exothermic reactors is essential in order to obtain the wanted production rate, stay in the region of acceptable conversion and of course to ensure safety during operation. This work ... -
Pilot–Scale Production of Carbon Hollow Fiber Membranes from Regenerated Cellulose Precursor-Part II: Carbonization Procedure
(Journal article; Peer reviewed, 2018)The simultaneous carbonization of thousands of fibers in a horizontal furnace may result in fused fibers if carbonization residuals (tars) are not removed fast enough. The optimized purge gas flow rate and a small degree ... -
Pinpointing basic sites formed upon incorporation of iron in hierarchical SAPO-11 using catalytic model reactions
(Peer reviewed; Journal article, 2022)By utilizing previously established catalytic model reactions, a method for probing the topological location of transition metal sites incorporated in hierarchical silicoaluminophosphates (SAPOs) is presented. For the first ... -
Plantwide Control for Economically Optimal Operation of Chemical Plants: - Applications to GTL plants and CO2 capturing processes
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:265, Doctoral thesis, 2011)In this thesis, the systematic plantwide procedure of Skogestad (2004) is applied to two processes; 1- Post-combustion CO2 capturing processes, 2- Natural gas to liquid hydrocarbons (GTL) plants, in order to design ... -
Plantwide control of alkaline water electrolyzer plant for hydrogen production
(Master thesis, 2020)I arbeidet med å dempe klimagassutslipp er utvikling av teknologier som reduserer avhengigheten av fossile brenselbaserte energikilder uunnværlig. For tiden tilbyr hydrogenbaserte teknologier som involverer utvikling av ...