Institutt for kjemisk prosessteknologi
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Preparation of Carbon Molecular Sieve Membranes with Remarkable CO2/CH4 Selectivity for High-pressure Natural Gas Sweetening
(Peer reviewed; Journal article, 2020)Carbon hollow fiber membranes (CHFMs) were fabricated based on cellulose hollow fiber precursors spun from a cellulose/ionic liquid system. By a thermal treatment on the precursors using a preheating process before ... -
Single Drop Breakage in Turbulent Flow: Statistical Data Analysis
(Peer reviewed; Journal article, 2020)To improve breakage models in the population balance framework, single octanol droplet experiments have been performed in a channel flow and recorded by high-speed camera. The study investigates impact of mother drop size ... -
Lignosulfonates in Crude Oil Processing: Interactions with Asphaltenes at the Oil/Water Interface and Screening of Potential Applications
(Peer reviewed; Journal article, 2020)The goal of this article is to test the potential application of lignosulfonates (LSs) in crude oil production and processing. Three LS samples of varying hydrophobicity and average molecular weight were considered. First, ... -
Microfluidic testing of flocculants for produced water treatment: Comparison with other methodologies
(Peer reviewed; Journal article, 2020)Flocculants are often added during produced water treatment to improve the crude oil droplet growth and separation from the water phase. Prior to use in the field, their performance is tested in laboratory conditions, ... -
Active sites for the oxygen reduction reaction in nitrogen-doped carbon nanofibers
(Journal article; Peer reviewed, 2019)Understanding the role of iron and the nature of the active sites in nitrogen-doped carbon nanomaterials is vital for their future application as oxygen reduction electrocatalysts in fuel cells. In this paper, porphyrin-like ... -
Systematic design of active constraint switching using se-lectors.
(Peer reviewed; Journal article, 2020)Selector logic is a simple and effective tool to switch between different controlled variables associated with change in active constraints. Selector blocks have been extensively used in the process control industry for ... -
Swelling of individual cellulose nanofibrils in water, role of crystallinity: an AFM study
(Peer reviewed; Journal article, 2020)Atomic force microscopy (AFM) can be used to quantitatively study nanomaterials in different media, e.g. vacuum, air, or submerged in a liquid. A technique was developed to study swelling of individual cellulose nanofibrils ... -
Synergy between chemical demulsification and electrocoalescence: From bench to large scale
(Doctoral theses at NTNU;2020:64, Doctoral thesis, 2020)Production of crude oil from reservoirs always contain additional fluids, namely formation water and gas that occur naturally below the surface or seabed. Especially problematic is the water that becomes dispersed within ... -
Viscoelastic properties of interfacial lignosulfonate films and the effect of added electrolytes
(Peer reviewed; Journal article, 2020)New evidence is presented, which confirmed interfacial gelling of lignosulfonates in presence of di- and trivalent cations. In this article, the viscoelastic properties of lignosulfonate films at the water-xylene interface ... -
Fundamental properties of nanocelluloses, and teir application in membranes for CO2 Separation
(Doctoral theses at NTNU;2019:146, Doctoral thesis, 2019) -
Spectroscopic study of partially oxidized BN nanoscrolls induced by low frequency ultrasonic radiation
(Journal article; Peer reviewed, 2020)In comparison to carbon nanostructures, hexagonal boron nitride (hBN) nanostructures show better biocompatibility and lower cytotoxicity. However, research studies on hBN nanostructures for biomedical applications are still ... -
Genomic characterization of the most barotolerant Listeria monocytogenes RO15 strain compared to reference strains used to evaluate food high pressure processing
(Peer reviewed; Journal article, 2020)Background: High pressure processing (HPP; i.e. 100–600 MPa pressure depending on product) is a non-thermal preservation technique adopted by the food industry to decrease significantly foodborne pathogens, including ... -
Absorption of CO2 in lyotropic liquid crystals
(Peer reviewed; Journal article, 2020)Vapor–liquid equilibria data of three poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)/water liquid crystals (LCs) with CO2 has been obtained up to 6 bar. The investigated LCs consist of 60% (EO)3(PO)50(EO)3 ... -
Experimental evidence of enhanced adsorption dynamics at liquid-liquid interfaces under electric field
(Journal article; Peer reviewed, 2020)In this work we investigate adsorption of surface active compounds at water-oil interface subjected to an electric field. A fluid system comprising a pendent water drop surrounded by an asphaltene-rich organic phase is ... -
Process Integration of Green Hydrogen: Decarbonization of Chemical Industries
(Journal article; Peer reviewed, 2020)Integrated water electrolysis is a core principle of new process configurations for decarbonized heavy industries. Water electrolysis generates H2 and O2 and involves an exchange of thermal energy. In this manuscript, we ... -
Development of a microfluidic method to study enhanced oil recovery by low salinity water flooding
(Journal article; Peer reviewed, 2020)Microfluidics is an appealing method to study processes at rock pore scale such as oil recovery due to the similar size range. It also offers several advantages over the conventional core flooding methodology, for example, ... -
H-2-selective Troger's base polymer based mixed matrix membranes enhanced by 2D MOFs
(Peer reviewed; Journal article, 2020)In this work, two two-dimensional (2D) leaf ZIFs (ZIF-L-Zn and ZIF-L-Co) were incorporated into the Troger's base (TB)-based polymers for hydrogen separation. SEM imaging and enhanced performance have demonstrated good ... -
Synthesis of Crosslinked PEG/IL Blend Membrane via One-Pot Thiol–Ene/Epoxy Chemistry
(Journal article, 2020)Poly(ethylene glycol) (PEG)-based membranes have obtained considerable attentions for CO2 separation for their promising CO2 separation performance and excellent thermal/ chemical resistance. In this work, a one-pot ... -
Synthesis of Crosslinked PEG/IL Blend Membrane via One-Pot Thiol–Ene/Epoxy Chemistry
(Journal article, 2020)Poly(ethylene glycol) (PEG)-based membranes have obtained considerable attentions for CO2 separation for their promising CO2 separation performance and excellent thermal/ chemical resistance. In this work, a one-pot ... -
Carbon Membranes for CO2 Removal: Status and Perspectives from Materials to Processes
(Peer reviewed; Journal article, 2020)CO2 removal from gas streams using energy-efficient and environmentally friendly separation technologies can contribute to achieving a low-carbon energy future. Carbon membrane systems for hydrogen purification, post-combustion ...
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