Institutt for kjemisk prosessteknologi: Nye registreringer
Viser treff 61-80 av 1764
-
Catalyst Development of Ethylene Oxychlorination to Ethylene Dichloride and Vinyl Chloride
(Doctoral theses at NTNU;2023:372, Doctoral thesis, 2023)Vinyl chloride monomer (VCM) is a critical component in the production of polyvinyl chloride (PVC), one of the most extensively used plastic polymers, through the polymerization process. The global VCM industry capacity ... -
Macro- and micro scale phenomena in gas flotation for produced water treatment- the effect of fluid composition, temperature and pressure
(Doctoral theses at NTNU;2023:369, Doctoral thesis, 2023)Produced water, the primary waste product of the petroleum industry, contains harmful components that must be treated before discharge to the sea or reinjection. The focus of treatment has traditionally been on dispersed ... -
An approach for VLE model development, validation, and implementation in Aspen Plus for amine blends in CO2 capture: the HS3 solvent case study
(Journal article; Peer reviewed, 2023)Carbon Capture and Storage (CCS) using chemical absorption is a viable method to significantly cut CO2 emissions in the industrial and energy sectors. However, further development of improved absorbents is necessary to ... -
Optimized synthesis of polyacrylic acid-coated magnetic nanoparticles for high-efficiency DNA isolation and size selection
(Peer reviewed; Journal article, 2023)Solid-phase reversible immobilization (SPRI) bead technology is widely used in molecular biology for convenient DNA manipulation. However, commercial SPRI bead kits lack cost advantages and flexibility. It is, therefore, ... -
Effect of Cu2+ on deposition mechanism and structure of ZrO2-based conversion coatings on AA6060 aluminium alloys and their susceptibility to filiform corrosion
(Peer reviewed; Journal article, 2024)Zirconium oxide-based conversion coatings (CCs) were prepared from hexafluorozirconic acid, H2ZrF6, with and without CuII as an additive. The CCs were prepared on primary and recycled AA6060. The deposition mechanism, ... -
Effect of Metal Oxides on Reaction Route and Product Distribution of Catalytic Cellulose Hydrogenolysis
(Peer reviewed; Journal article, 2023)The effects of CeO2, ZrO2, Nb2O5, and ZnO catalysts supported on carbon nanotubes (CNT) relative to cellulose hydrothermal hydrogenolysis in the presence of Ni/CNT and pressured H2 was studied in this work. The catalysts ... -
Enhancing Palladium Recovery Rates in Industrial Residual Solutions through Electrodialysis
(Peer reviewed; Journal article, 2023)Palladium is a vital commodity in the industry. To guarantee a stable supply in the future, it is imperative to adopt more effective recycling practices. In this proof-of-concept study, we explore the potential of ... -
A Model Library for Oil/Water Emulsion Separation and Transport Processes
(Doctoral thesis, 2023)In the petroleum industry, the separation and transportation of multiphase fluids, especially crude-oil and water emulsions, hold immense economic and environmental significance. Thus, development of fundamentally advanced, ... -
Helium separation using membrane technology: Recent advances and perspectives
(Peer reviewed; Journal article, 2021)Helium is an unrenewable noble gas produced from natural gas with a wide range of scientific, medical, and industrial applications. Due to the large differences in the kinetic diameters between helium (0.26 nm) and nitrogen ... -
Chemical Recycling of Elastane and Elastane Blends
(Master thesis, 2023)The global environmental landscape has been significantly impacted by the accumulation and improper management of post-consumer polymers. With a significant rise in the use of polymeric textile fibres, and the massive ... -
Effect of Pregnant leach solution on Synergistic Solvent Extraction
(Master thesis, 2023)Battery recycling is gaining increased traction in today’s world for myriad reasons, with the chief ones being the dwindling availability of raw materials and heightened ecological consciousness. While there exist certain ... -
Emulsions in porous media from the perspective of produced water re-injection – A review
(Peer reviewed; Journal article, 2021)During offshore production, it is typical to discharge produced water into the sea after treating it to a level that meets environmental regulations. A growth in the volumes of produced water and increasingly stringent ... -
Enhanced CO2/H2 separation by GO and PVA-GO embedded PVAm nanocomposite membranes
(Doctoral theses at NTNU;2023:307, Doctoral thesis, 2023)The objective of this Ph.D. project is to develop facilitated transport nanocomposite membranes with superior CO2/H2 separation performances for H2 purification. The research activities include material synthesis, membrane ... -
Modelling, Control, and Optimization of a Recirculating Aquaculture System
(Doctoral theses at NTNU;2023:336, Doctoral thesis, 2023)Recirculating aquaculture systems (RAS) are closed-loop systems that recycle most of the effluent of a fish tank after particle removal and water treatment. This type of process requires good control of the water quality, ... -
Exploring metal-metal and metal-support interactions in Pt-based catalysts for aqueous phase reforming
(Doctoral theses at NTNU;2023:402, Doctoral thesis, 2023)The extensive use of fossil fuels is widely recognized as one of the primary factors contributing to global warming. Therefore, finding alternative and sustainable energy sources/carriers is a relevant area of research to ... -
Membrane process design for biohydrogen purification with simultaneous CO2 capture: Feasibility and techno-economic assessment
(Peer reviewed; Journal article, 2023)In this work, a membrane separation process is designed and optimized to purify dark fermentative biohydrogen by removing CO2. A CO2-selective PVAm-based nanocomposite membrane was selected considering its high CO2/H2 ... -
Limiting current density as a selectivity factor in electrodialysis of multi-ionic mixtures
(Peer reviewed; Journal article, 2023)Electrodialysis is a promising technology to remove low concentrations of target ions from multi-ionic mixtures. While the synthesis of selective membranes is a prominent topic in research, few studies have been presented ... -
Facilitated Transport Nanocomposite Membranes for CO<inf>2</inf>/H<inf>2</inf> Separation: The Effect of Mobile Carriers
(Peer reviewed; Journal article, 2023)Using CO2-selective membranes based on facilitated transport mechanisms has been reported as an energy-efficient approach for hydrogen purification from CO2-containing mixed gas streams. In this work, four CO2-philic mobile ... -
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 ... -
Interfacial mass transfer and bubble hydrodynamics in bubble columns
(Doctoral theses at NTNU;2023:420, Doctoral thesis, 2023)The interaction between gas–liquid or gas–liquid–solid phases exhibit complexity which for years have led researchers to study the intrinsic mechanisms involved. One important branch within multi-phase flow is the interfacial ...