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    • Phase Transitions and Separation Time Scales of CO2-Crude Oil Fluid Systems: Wheel Flow Loop Experiments and Modelling 

      Fossen, Martin; Pasqualette, Marcelo A.; Carneiro, Joao N.E. (Peer reviewed; Journal article, 2020)
      Presented here is experimental and theoretical work on phase transitions and separation time scales for CO2−crude oil mixtures with CO2 content ranging from pure to 79 mol %. The experimental work was performed using the ...

    • Phosphorus deactivation on co-based catalysts for Fischer-Tropsch 

      Ivanez Encinas, Oscar Luis; Groven, Anette Synnøve; Rout, Kumar Ranjan; Blekkan, Edd Anders (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 ...

    • Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching 

      Zhu, Mengyi; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2020)
      In this paper, the separation of phosphorus from metallurgical-grade silicon was investigated based on an Mg alloying and HCl leaching approach. Experimental results show that P concentration was reduced from initial 15.1 ...

    • Physicochemical characterization and quantification of nanoplastics: applicability, limitations and complementarity of batch and fractionation methods 

      Huber, Maximilian J.; Ivleva, Natalia P.; Booth, Andy; Beer, Irina; Bianchi, Ivana; Drexel, Roland; Geiss, Otmar; Mehn, Dora; Meier, Florian; Molska, Alicja Anna; Parot, Jérémie; Sørensen, Lisbet; Vella, Gabriele; Prina‑Mello, Adriele; Vogel, Robert; Caputo, Fanny (Peer reviewed; Journal article, 2023)
      A comprehensive physicochemical characterization of heterogeneous nanoplastic (NPL) samples remains an analytical challenge requiring a combination of orthogonal measurement techniques to improve the accuracy and robustness ...

    • Physiologically based pharmacokinetic modeling of intravenously administered nanoformulated substances 

      Minnema, Jordi; Borgos, Sven Even F.; Liptrott, Neill; Vandebriel, Rob J.; Delmaar, Christiaan (Peer reviewed; Journal article, 2022)
      The use of nanobiomaterials (NBMs) is becoming increasingly popular in the field of medicine. To improve the understanding on the biodistribution of NBMs, the present study aimed to implement and parametrize a physiologically ...

    • Pilot Scale Production of Manganese Ferroalloys Using Heat-Treated Mn-Nodules 

      Tangstad, Merete; Ringdalen, Eli; Manilla, Edmundo; Davila, Daniel (Peer reviewed; Journal article, 2017)
      Pilot-scale experiments are one way to investigate the process patterns and the reaction mechanisms of processes and raw materials. To understand a process fully, both theoretical considerations as well as small-scale ...

    • Pilot-Scale Test of Flue Gas Recirculation for The Silicon Process 

      Andersen, Vegar; Solheim, Ingeborg; Gaertner, Heiko; Sægrov-Sorte, Bendik; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella (Peer reviewed; Journal article, 2022)
      Flue gas recirculation (FGR) for the silicon process may facilitate increasing the CO2 concentration in the off-gas, which will be beneficial for potential future carbon capture. Lower oxygen concentration in the combustion ...

    • Pipe flow experiments of unstable oil-water dispersions with three different oil viscosities: Flow pattern, pressure drop and droplet size measurements 

      Gonzalez Rengifo, Diana Carolina; Schümann, Heiner; Kjølaas, Jørn (Peer reviewed; Journal article, 2022)
      The transport of oil-water dispersions in petroleum production pipelines is difficult to predict and requires special attention since it affects the performance of the entire system. For future field developments it is ...

    • Pixelization approach for façade integrated coloured photovoltaics-with architectural proposals in city context of Trondheim, Norway 

      Xiang, Changying; Matusiak, Barbara Szybinska; Røyset, Arne Karstein; Kolås, Tore (Peer reviewed; Journal article, 2021)
      Façade integrated photovoltaics (FIPV) is an emerging and essential way to utilize solar energy in built environment. However, there is limited architectural study of FIPV, especially addressing the topic of colour ...

    • Planning of an Offshore Well Plugging Campaign: A Vehicle Routing Approach 

      Bakker, Steffen J.; Aarlott, Mats Mathisen; Tomasgard, Asgeir; Midthun, Kjetil Trovik (Peer reviewed; Journal article, 2017)
      When a petroleum well no longer serves its purpose, the operator is required to plug and abandon (P&A) the well to avoid contamination of reservoir fluids. An increasing number of offshore wells needs to be P&A’d in the ...

    • Plasmonic properties of aluminium nanowires in amorphous silicon 

      Thøgersen, Annett; Jensen, Ingvild Julie Thue; Belle, Branson Delano; Stange, Marit Synnøve Sæverud; Reinertsen, Vilde Mari; Kjeldstad, Torunn; Prytz, Øystein; Monakhov, Eduard; Kepaptsoglou, Demie (Peer reviewed; Journal article, 2022)
      Plasmonic structures can help enhance optical activity in the ultraviolet (UV) region and therefore enhancing photocatalytic reactions and the detection of organic and biological species. Most plasmonic structures are ...

    • Platinum and Platinum Group Metal-Free Catalysts for Anion Exchange Membrane Fuel Cells 

      Truong, Van Men; Tolchard, Julian R; Svendby, Jørgen; Manikandan, Maidhily; Miller, Hamish; Sunde, Svein; Hsiharng, Yang; Dekel, Dario; Barnett, Alejandro Oyarce (Peer reviewed; Journal article, 2020)
      The development of active hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR) catalysts for use in anion exchange membrane fuel cells (AEMFCs), which are free from platinum group metals (PGMs), is expected ...

    • Platinum group metals recovery using secondary raw materials (platirus): Project overview with a focus on processing spent autocatalyst 

      Nicol, Giovanna; Goosey, Emma; Yildiz, Deniz Sanli; Loving, Elaine; Nguyen, Viet Tu; Riaño, Sofía; Yakoumis, Iakovos; Martinez, Ana Maria Cuellar; Siriwardana, Amal; Unzurrunzaga, Ainhoa; Spooren, Jeroen; Atia, Thomas Abo; Michielsen, Bart; Dominguez-Benetton, Xochitl; Lanaridi, Olga (Peer reviewed; Journal article, 2021)
      PLATInum group metals Recovery Using Secondary raw materials (PLATIRUS), a European Union (EU) Horizon 2020 project, aims to address the platinum group metal (pgm) supply security within Europe by developing novel and ...

    • Polymer Gels Made with Functionalized Organo-Silica Nanomaterials for Conformance Control. 

      Najafiazar, Bahador; Wessel-Berg, Dag; Bergmo, Per Eirik Strand; Simon, Christian; Yang, Juan; Torsæter, Ole; Holt, Torleif (Journal article; Peer reviewed, 2019)
      Deep placement of gel in waterflooded hydrocarbon reservoirs may block channels with high water flow and may divert the water into other parts of the reservoir, resulting in higher oil production. In order to get the gel ...

    • Polymer-functionalized silica nanoparticles for improving water flood sweep efficiency in Berea sandstones. 

      Bila, Alberto Luis; Stensen, Jan Åge; Torsæter, Ole (Peer reviewed; Journal article, 2020)
      Extraction of oil trapped after primary and secondary oil production stages still poses many challenges in the oil industry. Therefore, innovative enhanced oil recovery (EOR) technologies are required to run the production ...

    • Pore-and core-scale insights of nanoparticle-stabilized foam for CO2-enhanced oil recovery 

      Alcorn, Zachary Paul; Føyen, Tore Lyngås; Gauteplass, Jarand; Benali, Benyamine; Soyke, Aleksandra; Fernø, Martin (Peer reviewed; Journal article, 2020)
      Nanoparticles have gained attention for increasing the stability of surfactant-based foams during CO2 foam-enhanced oil recovery (EOR) and CO2 storage. However, the behavior and displacement mechanisms of hybrid ...

    • Pore-scale bubble population dynamics of CO2-foam at reservoir pressure 

      Benali, Benyamine; Føyen, Tore Lyngås; Alcorn, Zachary Paul; Haugen, Malin; Gauteplass, Jarand; Kovscek, Anthony R.; Fernø, Martin (Peer reviewed; Journal article, 2022)
      The flow of CO2 foam for mobility control in porous media is dictated by the foam texture, or bubble density, which is commonly expressed as the number of bubbles per unit of flowing gas. In most high-pressure laboratory ...

    • Porosity and solidification cracking in welded 45 mm thick steel by fiber laser-MAG process 

      Bunaziv, Ivan; Frostevarg, Jan; Ren, Xiaobo; Kaplan, Alexander F.H.; Akselsen, Odd Magne (Journal article; Peer reviewed, 2019)
      Porosity and solidification cracking in joining of thick sections are very common issues in deep penetration keyhole laser-arc hybrid welding (LAHW). In the present work, 45 mm thick high strength steel was joined by a ...

    • Porous Carbon Anodes for the Supply of Methane during Electrowinning of Aluminium 

      Khalaghi, Babak; Gudbrandsen, Henrik; Kjos, Ole Sigmund; Osen, Karen Sende; Mokkelbost, Tommy; Haarberg, Geir Martin (Chapter; Peer reviewed, 2016)
      One of the major downsides of the current aluminium production process is the high amount of CO2 e mission. One alternative is to replace the consumable carbon anodes with inert anodes so that oxygen evolves instead of CO2 ...

    • Portland cement hydration in the vicinity of electrically polarized conductive surfaces 

      Gawel, Kamila; Wenner, Sigurd; Jafariesfad, Narjes; Torsæter, Malin; Justnes, Harald (Peer reviewed; Journal article, 2022)
      Hardening of Portland cement-based materials in vicinity of electrically conductive surfaces, especially when the surfaces are electrically or galvanically polarized, can lead to both morphological and chemical changes in ...