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Browsing Institutt for kjemisk prosessteknologi by Author 
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Browsing Institutt for kjemisk prosessteknologi by Author "Hagg, May-Britt"

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    • Carbon membranes for oxygen enriched air – Part I: Synthesis, performance and preventive regeneration 

      Haider, Shamim; Lindbråthen, Arne; Lie, Jon Arvid; Hagg, May-Britt (Journal article; Peer reviewed, 2018)
      Chemisorption of oxygen on the active sites of carbon layers limits the use of carbon membranes in air separation application. A novel online electrical regeneration method was applied to prevent the active sites on carbon ...
    • Carbon membranes for oxygen enriched air – Part II: Techno-economic analysis 

      Haider, Shamim; Lindbråthen, Arne; Lie, Jon Arvid; Hagg, May-Britt (Journal article; Peer reviewed, 2018)
      Carbon membrane (CM) separation process for producing oxygen-enriched air (OEA) at a concentration of 50–78 mol% O2 in a single stage process with no recycle stream has been investigated. This paper (Part II of a two-part ...
    • Carbon molecular sieve membranes for biogas upgrading: Techno-economic feasibility analysis 

      He, Xuezhong; Chu, Yunhan; Lindbråthen, Arne; Hillestad, Magne; Hagg, May-Britt (Journal article; Peer reviewed, 2018)
      Biomethane, produced by biogas upgrading, has a great potential to replace part of the fossil fuel natural gas, and may be injected into a gas grid or used as compressed biomethane as vehicle fuel. The state-of-the-art ...
    • Cellulose nanocrystal/PVA nanocomposite membranes for CO2/CH4 separation at high pressure 

      Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby (Journal article; Peer reviewed, 2018)
      Biogas can be used as an alternative energy source in place of conventional fossil fuels. However, for this to happen, it is necessary to optimize biogas production as well as improve the biogas quality. Crystalline ...
    • Co2 Separation in Nanocomposite Membranes by the Addition of Amidine and Lactamide Functionalized POSS® Nanoparticles into a PVA Layer 

      Guerrero Heredia, Gabriel; Hagg, May-Britt; Simon, Christian; Peters, Thijs; Rival, Nicolas; Denonville, Christelle (Journal article; Peer reviewed, 2018)
      In this article, we studied two different types of polyhedral oligomeric silsesquioxanes (POSS®) functionalized nanoparticles as additives for nanocomposite membranes for CO2 separation. One with amidine functionalization ...
    • CO2 separation with carbon membranes in high pressure and elevated temperature applications 

      Haider, Shamim; Lindbråthen, Arne; Lie, Jon Arvid; Andersen, Ingerid Caroline Tvenning; Hagg, May-Britt (Journal article; Peer reviewed, 2017)
      Carbon hollow fibers (CHF) were fabricated by carbonization of deacetylated cellulose acetate precursor. To enhance membrane permeation properties, pore structure was tailored by means of an oxidation and reduction process ...
    • Decoupling the effect of membrane thickness and CNC concentration in PVA based nanocomposite membranes for CO2/CH4 separation 

      Jahan, Zaib; Niazi, Muhammad Bilal Khan; Hagg, May-Britt; Gregersen, Øyvind Weiby (Journal article; Peer reviewed, 2018)
      The effect of the viscosity of the casting suspension on membrane morphology and thickness has been investigated for polyvinyl alcohol (PVA)/crystalline nanocellulose (CNC) nanocomposite membranes used for CO2/CH4 separation. ...
    • Effect of Water Interactions on Polyvinylamine at Different pHs for Membrane Gas Separation 

      Romero Nieto, Daniel; Lindbråthen, Arne; Hagg, May-Britt (Journal article; Peer reviewed, 2017)
      In our previous work, it was shown that the separation performance of the fixed-site-carrier polyvinylamine (PVAm) composite membrane increases exponentially with increasing relative humidity content in the gas. Through ...
    • Influence of acid concentration, temperature, and time on decrystallization in two-stage concentrated sulfuric acid hydrolysis of Pinewood and Aspenwood: A statistical Approach 

      Janga, Kando Khalifa; Hagg, May-Britt; Moe, Størker (Journal article; Peer reviewed, 2012)
      The effects on sugar yields of acid concentration, temperature, and time in the first (decrystallization) stage of a two-stage concentrated sulfuric acid hydrolysis of softwood (Scots pine) and hardwood (aspen) were ...
    • Influence of Functionalized Nanoparticles on the CO2/N2 Separation Properties of PVA-based Gas Separation Membranes 

      Guerrero Heredia, Gabriel; Venturi, Davide; Peters, Thijs; Rival, Nicolas; Denonville, Christelle; Simon, Christian; Henriksen, Partow Pakdel; Hagg, May-Britt (Journal article; Peer reviewed, 2017)
      This work investigated the influence of amino-functionalized polyhedral oligomeric silsesquioxane (amine-POSS®) nanoparticles dispersed in a polyvinyl alcohol (PVA) matrix applied as a CO2-selective gas separation membrane. ...
    • Membranes for Environmentally Friendly Energy Processes 

      He, Xuezhong; Hagg, May-Britt (Journal article; Peer reviewed, 2012)
    • Pilot–Scale Production of Carbon Hollow Fiber Membranes from Regenerated Cellulose Precursor-Part II: Carbonization Procedure 

      Haider, Shamim; Lie, Jon Arvid; Lindbråthen, Arne; Hagg, May-Britt (Journal article; Peer reviewed, 2018)
      The simultaneous carbonization of thousands of fibers in a horizontal furnace may result in fused fibers if carbonization residuals (tars) are not removed fast enough. The optimized purge gas flow rate and a small degree ...
    • Pressure Retarded Osmosis and Forward Osmosis Membranes: Materials and Methods 

      Alsvik, Inger Lise; Hagg, May-Britt (Journal article; Peer reviewed, 2013)
      In the past four decades, membrane development has occurred based on the demand in pressure driven processes. However, in the last decade, the interest in osmotically driven processes, such as forward osmosis (FO) and ...
    • Regenerated cellulose based carbon membranes for CO2 separation; Durability and aging under miscellaneous environments 

      Haider, Shamim; Lindbråthen, Arne; Lie, Jon Arvid; Hagg, May-Britt (Journal article; Peer reviewed, 2018)
      Predictive models regarding the aging effect on membrane separation properties are required to estimate the membrane life time with acceptable permeability and selectivity for the respective application. The current article ...
    • Selectivity and self-diffusion of CO2 and H2 in a mixture on a graphite surface 

      Trinh, Thuat; Vlugt, Thijs J.H.; Hagg, May-Britt; Kjelstrup, Signe; Bedeaux, Dick (Journal article; Peer reviewed, 2013)
      We performed classical molecular dynamics (MD) simulations to understand the mechanism of adsorption from a gas mixture of CO2 and H2 (mole fraction of CO2 = 0.30) and diffusion along a graphite surface, with the aim to ...
    • Techno-economic evaluation of helium recovery from natural gas; A comparison between inorganic and polymeric membrane technology 

      Haider, Shamim; Saeed, Muhammad; Lindbråthen, Arne; Hagg, May-Britt (Journal article; Peer reviewed, 2019)
      Natural gas produced at high pressure (50-70 bar) is the only industrial source of helium (He). A membrane separation process may offer a more efficient production system with smaller footprint and lower operational cost ...
    • Vehicle fuel from biogas with carbon membranes; a comparison between simulation predictions and actual field demonstration 

      Haider, Shamim; Lindbråthen, Arne; Lie, Jon Arvid; Carstensen, Petter Vattekar; Johannessen, Thorbjørn; Hagg, May-Britt (Journal article; Peer reviewed, 2018)
      The energy contents of biogas could be significantly enhanced by upgrading it to vehicle fuel quality. A pilot-scale separation plant based on carbon hollow fiber membranes for upgrading biogas to vehicle fuel quality was ...

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