Blar i Institutt for kjemisk prosessteknologi på forfatter "Lei, Linfeng"
-
Carbon hollow fiber membranes for a molecular sieve with precise-cutoff ultramicropores for superior hydrogen separation
Lei, Linfeng; Pan, Fengjiao; Lindbråthen, Arne; Zhang, Xiangping; Hillestad, Magne; Nie, Yi; Bai, Lu; He, Xuezhong; Guiver, Michael D. (Peer reviewed; Journal article, 2021)Carbon molecular sieve (CMS) membranes with rigid and uniform pore structures are ideal candidates for high temperature- and pressure-demanded separations, such as hydrogen purification from the steam methane reforming ... -
Carbon Membranes for CO2 Removal: Status and Perspectives from Materials to Processes
Lei, Linfeng; Bai, Lu; Lindbråthen, Arne; Pan, Fengjiao; Zhang, Xiangping; He, Xuezhong (Peer reviewed; Journal article, 2020)CO2 removal from gas streams using energy-efficient and environmentally friendly separation technologies can contribute to achieving a low-carbon energy future. Carbon membrane systems for hydrogen purification, post-combustion ... -
Carbon Molecular Sieve Hollow Fiber Membranes for CO2 Removals
Lei, Linfeng (Doctoral theses at NTNU;2020:401, Doctoral thesis, 2020)New technologies that are more energy efficient could, if applied in the large-scale CO2 removal process, reduce carbon dioxide emissions, and achieve a low-carbon future. Compared to traditional amine-based absorption, ... -
Carbon Molecular Sieve Membranes for Hydrogen Purification from a Steam Methane Reforming Process
Lei, Linfeng; Lindbråthen, Arne; Hillestad, Magne; He, Xuezhong (Peer reviewed; Journal article, 2021)Asymmetric carbon molecular sieve (CMS) membranes prepared from cellulose hollow fiber precursors were investigated for H2/CO2 separation in this work. The prepared carbon membrane shows excellent separation performance ... -
Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO2/CH4 and CO2/N2
Karousos, Dionysis S.; Lei, Linfeng; Lindbråthen, Arne; Sapalidis, Andreas A.; Kouvelos, Evangelos P.; He, Xuezhong; Favvas, Evangelos P. (Peer reviewed; Journal article, 2020)Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO2/N2 and CO2/CH4 mixtures, ... -
Long-term performance of highly selective carbon hollow fiber membranes for biogas upgrading in the presence of H<inf>2</inf>S and water vapor
Brunetti, Adele; Lei, Linfeng; Avruscio, Elisa; Karousos, Dionysis S.; Lindbråthen, Arne; Kouvelos, Evangelos P.; He, Xuezhong; Favvas, Evangelos P.; Barbieri, Giuseppe (Peer reviewed; Journal article, 2022)Biogas is an increasingly attractive renewable resource that needs to be upgraded to meet either the natural gas pipeline quality or the biomethane requirement. The use of carbon membranes is a promising alternative to ... -
Mathematical Modeling and Process Parametric Study of CO2 Removal from Natural Gas by Hollow Fiber Membranes
Chu, Yunhan; Lindbråthen, Arne; Lei, Linfeng; He, Xuezhong; Hillestad, Magne (Journal article; Peer reviewed, 2019)Hollow fiber membranes show a great potential in natural gas sweetening by removing CO2 to meet gas grid specifications. A membrane model with high prediction accuracy is developed to model multicomponent gas transport ... -
Membrane process design for biohydrogen purification with simultaneous CO2 capture: Feasibility and techno-economic assessment
Xu, Wenqi; Lindbråthen, Arne; Janakiram, Saravanan; Ansaloni, Luca; Lei, Linfeng; Deng, Liyuan (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 ... -
Optimizing methane recovery: Techno-economic feasibility analysis of N2-selective membranes for the enrichment of ventilation air methane
He, Xuezhong; Lei, Linfeng (Peer reviewed; Journal article, 2020)Utilization of the low concentration methane from coal-mining ventilation air is challenging but can significantly contribute to the mitigation of methane emissions to the atmosphere. This work focuses on the techno-economic ... -
Preparation of Carbon Molecular Sieve Membranes with Remarkable CO2/CH4 Selectivity for High-pressure Natural Gas Sweetening
Lei, Linfeng; Lindbråthen, Arne; Zhang, Xiangping; Favvas, Evangelos P.; Sandru, Marius; Hillestad, Magne; He, Xuezhong (Peer reviewed; Journal article, 2020)Carbon hollow fiber membranes (CHFMs) were fabricated based on cellulose hollow fiber precursors spun from a cellulose/ionic liquid system. By a thermal treatment on the precursors using a preheating process before ... -
Screening Cellulose Spinning Parameters for Fabrication of Novel Carbon Hollow Fiber Membranes for Gas Separation
Lei, Linfeng; Lindbråthen, Arne; Hillestad, Magne; Sandru, Marius; Evangelos, Favvas; He, Xuezhong (Journal article; Peer reviewed, 2019)Novel carbon hollow fiber membranes (CHFMs) have been, for the first time, prepared from cellulose precursors directly spun with a cellulose/(1-ethyl-3-methylimidazolium acetate (EmimAc) + dimethyl sulfoxide (DMSO)) system. ... -
Spinning Cellulose Hollow Fibers Using 1-Ethyl-3-methylimidazolium Acetate–Dimethylsulfoxide Co-Solvent
Lei, Linfeng; Lindbråthen, Arne; Sandru, Marius; Gutierrez, Maria Teresa Guzman; Zhang, Xiangping; Hillestad, Magne; He, Xuezhong (Journal article; Peer reviewed, 2018)The mixture of the ionic liquid 1-ethyl-3-methylimidazolium acetate (EmimAc) and dimethylsulfoxide (DMSO) was employed to dissolve microcrystalline cellulose (MCC). A 10 wt % cellulose dope solution was prepared for spinning ...