Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 981-1000 of 1775
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Microfluidic method for determining drop-drop coalescence and contact times in flow
(Peer reviewed; Journal article, 2020)Coalescence kinetics is an important parameter when describing the stability of dispersions. A number of methods to measure coalescence time are available, however they often take long time and do not allow working with ... -
Microfluidic methods for studying oil recovery by aqueous floods at different wettability, temperature and pressure conditions
(Doctoral theses at NTNU;2021:78, Doctoral thesis, 2021)To keep up with the energy consumption in the world and recover sustainably from the currently developed oil fields, enhanced oil recovery (EOR) methods have been proven important. To be able to test the processes and new ... -
A Microfluidic Study of Droplet And Particle Retention: A Path from the Rationale to Pore-Scale Experiments
(Doctoral theses at NTNU;2022:291, Doctoral thesis, 2022)Produced water is the major byproduct of oil and gas production, containing a number of components that can be harmful to the environment, e.g., dispersed particles, dispersed oil, dissolved organics. Re-injection is an ... -
A microfluidic study of oil displacement in porous media at elevated temperature and pressure
(Peer reviewed; Journal article, 2021)Microfluidics methods offer possibilities for visual observations of oil recovery processes. Good control over test parameters also provides the opportunity to conduct tests that simulate representative reservoir conditions. ... -
Microfluidic Study on the Attachment of Crude Oil Droplets to Gas Bubbles
(Journal article; Peer reviewed, 2018)Gas flotation is often used during treatment of the oilfield produced water. It relies on the generation of gas bubbles and their attachment to oil drops, for example, by forming an oil film on the surface of a gas bubble. ... -
Microfluidic Synthesis of Graphene Quantum Dots and the Subsequent Ultrafast Photophysics: Building Blocks Towards Autonomous Nanomaterial Synthesis Platforms
(Doctoral theses at NTNU;2022:60, Doctoral thesis, 2022)Autonomous synthesis of nanomaterials is a harmonious pursuit which assembles various building blocks from a toolbox consisting of microfluidics, robotics, artificial-intelligence, and spectroscopy, amongst a plethora of ... -
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, ... -
Microfluidic tools for studying coalescence of crude oil droplets in produced water
(Journal article; Peer reviewed, 2018)The major contaminant targeted during the treatment of the oilfield produced water is dispersed oil. The efficiency of most separation processes highly relies on the size of the droplets, which can be increased through ... -
Microscopic Insight to Nonlinear Voltage Dependence of Charge in Carbon-Ionic Liquid Supercapacitors
(Journal article; Peer reviewed, 2021) -
Microstructure Characterisation of Bainitic HSLA Steel for Pressure Vessels
(Master thesis, 2014)The microstructure and mechanical properties in the midsection of a high thickness HSLA bainitic steel, was investigated in this master thesis. A homogeneous microstructure and good mechanical properties can be difficult to ... -
Microstructured reactors for hydrogen production
(Doktoravhandlinger ved NTNU, 1503-8181, Doctoral thesis, 2005)Small scale hydrogen production by partial oxidation (POX) and oxidative steam reforming (OSR) have been studied over Rh-impregnated microchannel Fecralloy reactors and alumina foams. Trying to establish whether metallic ... -
Migration of Plasticizers from Flexible Poly/(Vinyl Chloride)
(Dr. ingeniøravhandling, 0809-103X; 2002:117, Doctoral thesis, 2002)The migration of plasticizers from flexible PVC products has caused raising concern over the last decades. Phthalates are shown to induce certain types of cancer and damages to the reproductive system in rodents. It is ... -
Mineral scaling in natural gas processing – a classical crystallization phenomenon
(Doctoral theses at NTNU;2019:72, Doctoral thesis, 2019)Summary of thesis: Scaling is the formation of mineral deposits on surfaces. During petroleum production, these crystalline layers can affect surfaces everywhere from the well to production equipment onshore. When the ... -
Minimum Energy for the four-product Kaibel-column
(Lecture, 2006) -
Minimum Energy Operation of Petlyuk Distillation Columns - Nonsharp Product Specification
(Chapter, 2009)The Petlyuk or fully thermally coupled distillation arrangement has the ability to separate a ternary feed into three pure products with an energy consumption 20-30% below conventional arrangements. The most interesting ... -
Mitigation and remediation of asphaltene precipitation, deposition and plug formation: Importance of asphaltene subfractions
(Doctoral theses at NTNU;2017:110, Doctoral thesis, 2017)Asphaltenes represent the heaviest and most polar constituent of petroleum. They consist of a wide range of molecules differing in molecular weight and functional groups. Under reservoir conditions, the asphaltenes generally ... -
Mixed Matrix Membranes Based on Fluoropolymers with m- And p-Terphenyl Fragments for Gas Separation Applications
(Peer reviewed; Journal article, 2021)Novel mixed matrix membranes (MMMs) based on fluoropolymers with m- and p-terphenyl fragments and NaX zeolites were prepared. The fluoropolymers were synthesized by a one-pot, room-temperature, metal-free superacid-catalyzed ... -
Mixing of cellulose nanofibrils and individual furnish components: Effects on paper properties and structure
(Journal article; Peer reviewed, 2016)Thermo-mechanical pulp (TMP) handsheets with different fractions of cellulose nano fibrils (CNF) and ground calcium carbonate (GCC) were made. CNF and retention chemicals were added in three different ways; to GCC, to long ... -
Mn promoted Co catalysts for Fischer-Tropsch production of light olefins – An experimental and theoretical study
(Journal article; Peer reviewed, 2018)Three different CoMn/gamma-Al2O3 catalysts were prepared by the incipient wetness impregnation route and compared to a Co/gamma-Al2O3 catalyst. The effect of co-impregnation vs. sequential impregnation as well as the order ... -
Mn promotion effects in Co based Fischer-Tropsch production of light olefins
(Doctoral theses at NTNU;2018:180, Doctoral thesis, 2018)In this work, Mn promotion of γ-Al2O3 supported Co catalysts was investigated for the purpose of producing light olefins via the Fischer-Tropsch synthesis process. CoMn/γ-Al2O3 catalysts were prepared by the incipient ...