Blar i Institutt for prosess-, energi- og miljøteknologi på dokumenttype "Journal article"
Viser treff 21-40 av 275
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Analyzing the Effects of Geometrical and Particle Size Uncertainty in Circulating Fluidized Beds using CPFD Simulation
(Journal article; Peer reviewed, 2019)Computational fluid dynamic modeling and simulation is becoming a useful tool in the detailed analysis of multiphase flow systems. The level of uncertainty is different depending on selected modeling concept and numerical ... -
Analyzing the effects of particle density, size, size distribution and shape for minimum fluidization velocity with Eulerian-Lagrangian CFD simulation
(Journal article; Peer reviewed, 2017)Fluidized bed reactor systems are widely used due to excellent heat and mass transfer characteristics followed by uniform temperature distribution throughout the reactor volume. The importance of fluidized beds is further ... -
Applicability of NRTL Model for Prediction of the Viscosity of Alkanolamine + Water Mixtures
(Journal article; Peer reviewed, 2019)This study discusses the applicability of the non-random two-liquid (NRTL) model to represent viscosity for MEA (monoethanol amine) + H2O and AMP (2-amino-2-methyl-1-propanol) + MEA (monoethanol amine) + H2O mixtures under ... -
Application of 15N-NMR spectroscopy to analysis of amine based CO2 capture solvents
(Journal article; Peer reviewed, 2014)15N NMR spectroscopy is a useful tool for amine reactivity characterization since it can provide information about the availability of the lone pair of electrons on nitrogen through the measured chemical shift values, which ... -
Application of Autonomous Inflow Control Valve for Enhanced Bitumen Recovery by Steam Assisted Gravity Drainage
(Peer reviewed; Journal article, 2022)Steam assisted gravity drainage is a thermal method for enhanced bitumen recovery. In this method, steam is injected to bitumen and heavy oil to reduce the viscosity and make the oil mobile. However, early breakthrough of ... -
Aqueous Mapa, DEEA, and Their Blend as CO2 Absorbents: Interrelationship between NMR Speciation, pH, and Heat of Absorption Data
(Peer reviewed; Journal article, 2019)On the basis of speciation by nuclear magnetic resonance (NMR) spectroscopy, heat of absorption, and pH data, the reactions occurring in aqueous MAPA (3-(methylamino)propylamine), DEEA (2-(diethylamino)ethanol), and their ... -
Aspen Plus simulation of biomass gasification for different types of biomass
(Journal article; Peer reviewed, 2019)A steady-state Aspen Plus model was developed for biomass gasification in a fluidized bed reactor. A combination of different Aspen Plus unit operations was used to model the gasification process. The model was used to ... -
Assessing and prioritizing challenges facing bioenergy supply chain in Norway: a Delphi-AHP method
(Peer reviewed; Journal article, 2022)Norway is leading the share of renewable energy in Europe by almost 75%. However, the share of bioenergy in Norway’s energy supply is insignificant. Bioenergy, the most common type of renewable energy, generates more energy ... -
Assessment of Combustion and Gasification Behavior in a Bubbling Fluidized Bed Reactor: A Comparison between Biomass with and without Chemical Additives
(Peer reviewed; Journal article, 2020)During the storage of biogenic materials for energy utilization, destructions by microbial attacks are inevitable. Besides material degradation, self-ignition of wood chip piles also occurs consistently. Treating the ... -
Behaviour of biomass particles in a bubbling fluidized bed: A comparison between wood pellets and wood chips
(Peer reviewed; Journal article, 2019)For successful operation and design of a bubbling fluidized bed reactor handling a specific biomass, in-depth knowledge about the bed behaviour is paramount. This study compares the behaviour of a bed of sand containing ... -
Bicarbonate for microalgae cultivation: a case study in a chlorophyte, Tetradesmus wisconsinensis isolated from a Norwegian lake
(Peer reviewed; Journal article, 2021)Bicarbonate was evaluated as an alternative carbon source for a green microalga, Tetradesmus wisconsinensis, isolated from Lake Norsjø in Norway. Photosynthesis, growth, and lipid production were studied using four inorganic ... -
Bidomain Simulations of Subendocardial Ischemia: The Forward and Inverse Problems
(Journal article; Peer reviewed, 2014-09)We provide an analysis of the bidomain theory in relation to anterior subendocardial ischemia. Using the static bidomain model, this analysis explains why simulations often do not produce ST depression when the ischemia ... -
Biodiesel Production through the Transesterification of Waste Cooking Oil over Typical Heterogeneous Base or Acid Catalysts
(Peer reviewed; Journal article, 2023)For the production of biodiesel from waste cooking oil with an acid value of 1.86 mg KOH/g, five heterogeneous catalysts—Ba(OH)2, CaO, MgO, ZnO, and AlCl3—were employed. To optimize the reaction parameters of each catalyst, ... -
Bioelectrochemical CO2 Reduction to Methane: MES Integration in Biogas Production Processes
(Peer reviewed; Journal article, 2019)Anaerobic digestion (AD) is a widely used technique to treat organic waste and produce biogas. This article presents a practical approach to increase biogas yield of an AD system using a microbial electrosynthesis system ... -
Biogas purification using membrane micro-aeration: A mass transfer analysis
(Journal article; Peer reviewed, 2014)When sulfur containing organic feedstocks undergo anaerobic digestion, sulfides are formed due to the biological activities of sulfur reducing bacteria. Presence of hydrogen sulfide (H2S) negatively affects the usage of ... -
Biological treatment of amine wastes generated in post combustion CO2 capture
(Journal article; Peer reviewed, 2011)The wastes generation by amine degradation is an important issue to be addressed when considering CCS schemes. Biological treatment of amine wastes can be a strategy with reasonable economy and environmental sustainability. ... -
Boiling liquid expanding vapour explosion in CO2 small scale experiments
(Journal article; Peer reviewed, 2011-04)Carbon capture and storage systems require handling large volumes of high pressure CO2. Having thorough knowledge of the related hazards is essential, as is knowing how to prevent, detect, control and mitigate accidents. ... -
Capital cost estimation of CO2 capture plant using Enhanced Detailed Factor (EDF) method: Installation factors and plant construction characteristic factors
(Journal article; Peer reviewed, 2021)Capital cost is frequently estimated for new and retrofit carbon capture plants as new concepts for cost reduction emerge. Capital cost during initial cost estimation of chemical plants strongly depends on the installation ... -
Carbon dioxide solubility in mixtures of methyldiethanolamine with monoethylene glycol, monoethylene glycol–water, water and triethylene glycol
(Peer reviewed; Journal article, 2020)Carbon dioxide solubility in non-aqueous and aqueous mixtures of methyldiethanolamine (MDEA) with monoethylene glycol (MEG) was studied due to the relevance of these solvents for the combined acid gas removal and hydrate ... -
Categorising area models for stormwater fees at propert level: A literature review
(Journal article, 2022)Worldwide, the increasing challenges due to stormwater run-off in urban areas are well known. Authorities need to be prepared for emergency situations and have plans for preventive measures to avoid flooded properties and ...