Blar i NTNU Open på forfatter "Deng, Liyuan"
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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 ... -
Membranes and membrane processes for CO<inf>2</inf> separation: MEMFO's long-term effort in reducing carbon emissions
Deng, Liyuan; Lindbråthen, Arne; Janakiram, Saravanan; Ansaloni, Luca; Dai, Zhongde (Journal article; Peer reviewed, 2024)Urgent actions are needed to reduce CO2 emissions and mitigate the increasingly severe impacts of climate change. Since the 1990s, the membrane research group (MEMFO) at the Norwegian University of Science and Technology ... -
Membranes for CO<inf>2</inf> capture and separation: Progress in research and development for industrial applications
Dai, Zhongde; Deng, Liyuan (Peer reviewed; Journal article, 2024) -
Modelling and simulation for CO2 capture process optimization by using hybrid technologies in industrial applications
Ruiz Ruiz, Claudia (Master thesis, 2022)Global oppvarming utgjør en akutt fare for verden, og CO2 er en av de mest problematiske klimagassene. Teknikker for fangst, utnyttelse og lagring av karbon (CCUS) er under utvikling, og noen av dem er allerede i bruk, da ... -
Modelling of a tubular membrane contactor for pre-combustion CO2 capture using ionic liquids: Influence of the membrane configuration, absorbent properties and operation parameters
Dai, Zhongde; Usman, Muhammad; Hillestad, Magne; Deng, Liyuan (Journal article; Peer reviewed, 2016)A membrane contactor using ionic liquids (ILs) as solvent for pre-combustion capture CO2 at elevated temperature (303–393 K) and pressure (20 bar) has been studied using mathematic model in the present work. A comprehensive ... -
Morphologically Tunable MOF Nanosheets in Mixed Matrix Membranes for CO2 Separation
Deng, Liyuan; Deng, Jing; Dai, Zhongde; Hou, Jingwei (Peer reviewed; Journal article, 2020)This study first develops a facile method to synthesize zeolitic imidazolate framework cuboid (ZIF-C) nanosheets with tunable thickness from 70 to 170 nm from aqueous polymer solutions. The obtained ZIF-C nanosheets were ... -
Multilevel Screening of Ionic Liquid Absorbents for Simultaneous Removal of CO2 and H2S from Natural Gas
Wang, Jingwen; Song, Zhen; Cheng, Hongye; Chen, Lifang; Deng, Liyuan; Qi, Zhiwen (Peer reviewed; Journal article, 2020)For the selection of practically attractive ionic liquids (ILs) as absorbents for simultaneous CO2 and H2S removal from natural gas (NG), a multilevel screening method combining Henry′s law constant (H) and vapor–liquid ... -
Nafion/IL hybrid membranes with tuned nanostructure for enhanced CO2 separation: effects of ionic liquid and water vapor
Dai, Zhongde; Ansaloni, Luca; Ryan, Justin J.; Spontak, Richard J; Deng, Liyuan (Journal article; Peer reviewed, 2018)Polyelectrolytes have been reported to display gas permeation properties that can be of significant interest for CO2 capture applications, especially when they are fully hydrated. In this work, hybrid membranes prepared ... -
Nafion/PEG hybrid membrane for CO 2 separation: Effect of PEG on membrane micro-structure and performance
Dai, Zhongde; Aboukeila, Hesham; Deng, Jing; Ansaloni, Luca; Baschetti, Marco Giacinti; Deng, Liyuan (Journal article; Peer reviewed, 2018)In the present work, PEGDME with different molecular weight (Mn ∼ 250 and 500 g/mol) was added into Nafion-based membranes as CO2-philic additive, aiming at improving their CO2 capture performance. The physical, chemical ... -
Nanocellulose Crystal-Enhanced Hybrid Membrane for CO2 Capture
Dai, Zhongde; Deng, Jing; Ma, Yulei; Guo, Hongfang; Wei, Jing; Wang, Bangda; Jiang, Xia; Deng, Liyuan (Peer reviewed; Journal article, 2022)Developing a membrane material with both high CO2 permeability and high CO2/N2 selectivity is always desired for CO2 capture, while improving the sustainability of the membrane preparation process is of equal importance. ... -
Nanocomposite membranes with high-charge and size-screened phosphorylated nanocellulose fibrils for CO2 separation
Helberg, Ragne M Lilleby; Torstensen, Jonathan Økland; Dai, Zhongde; Janakiram, Saravanan; Chinga-Carrasco, Gary; Gregersen, Øyvind Weiby; Syverud, Kristin; Deng, Liyuan (Peer reviewed; Journal article, 2020)In this study, cellulose nanofibrils (CNF) of high charge (H-P-CNF) and screened size (H-P-CNF-S) were fabricated by increasing the charge of phosphorylated cellulose nanofibrils (P-CNFs) during the pre-treatment step of ... -
Natural Gas Dehydration Using Membrane Contactor
Keshavarz Rezaei, Niloufar (Master thesis, 2022)Natural gas is the cleanest and most preferred energy source due to its high accessibility, low cost, and energy efficiency. Subsea processing aims for underwater natural gas purification at high pressures, enabling the ... -
Novel CO2 separation membranes with functionalized nanofillers
Yu, Xinyi (Master thesis, 2018)In this work, a series of GO-based and nanocellulose-based nanoparticles were successfully functionalized through the EDC-catalyzed amide forming reaction, which confirmed by the new generated amide bond on FTIR spectrums ... -
Optimization of PEG-based membranes and mixed matrix membranes for CO2 capture
Deng, Jing (Doctoral theses at NTNU;2020:35, Doctoral thesis, 2019)Design better CO2 separation membranes for capture CO2 The elevated CO2 concentration has been widely recognized as one of the main factors leading to the increasing serious global warming. To prevent it from continuing ... -
Optimization of PVA Nano-composite Membranes in Membrane Contactor for CO2 Capture
Maupilier, Anne Marie Dominique Yveline (Master thesis, 2013)The aim of this report is to evaluate and optimize poly vinyl alcohol (PVA) composite membrane containing nanoparticles such as carbon nanotubes (CNTs), titanium dioxide or biofibers cross-linked with glutaraldehyde for ... -
Optimizing hollow fiber membranes and membrane process for CO2 capture from shipping /maritime vessels in commercial applications
Peng, Yu (Master thesis, 2022)Kontroll av koldioxidutsläpp och avskiljning av koldioxid har blivit en självklarhet sedan den globala uppvärmningen intensifierats. Många konventionella tekniker för Carbon capture and storage (CCS) har visat sig vara ... -
Osmotic membrane pressure actuator
Greene, Jonathan Ashley (Master thesis, 2011)This master thesis has focused on the membrane for the osmotic membrane pressure actuator (OMPA). The OMPA is an autonomous inflow control device for intended use in oil and gas wells. Its function is to prevent water from ... -
Pebax/PEG Grafted CNT Hybrid Membranes for Enhanced CO2/N2 Separation
Dai, Zhongde; Deng, Jing; Peng, Kang-Jen; Liu, Ying-Ling; Deng, Liyuan (Peer reviewed; Journal article, 2019)In the present study, poly(ethylene glycol) (PEG) functionalized carbon nanotubes (CNT-PEG) were used as nanoadditives to fabricate hybrid membranes for enhanced CO2 separation in Pebax 1657 matrix. The resultant membranes ... -
Performance of mixed matrix membranes containing porous two-dimensional (2D) and three-dimensional (3D) fillers for CO2 separation: A review
Ahmadi, Mahdi; Janakiram, Saravanan; Dai, Zhongde; Ansaloni, Luca; Deng, Liyuan (Journal article; Peer reviewed, 2018)Application of conventional polymeric membranes in CO2 separation processes are limited by the existing trade-off between permeability and selectivity represented by the renowned upper bound. Addition of porous nanofillers ... -
Performance of Nanocomposite Membranes Containing 0D to 2D Nanofillers for CO2 Separation: A Review
Janakiram, Saravanan; Ahmadi, Mahdi; Dai, Zhongde; Ansaloni, Luca; Deng, Liyuan (Journal article; Peer reviewed, 2018)Membrane technology has the potential to be an eco-friendly and energy-saving solution for the separation of CO2 from different gaseous streams due to the lower cost and the superior manufacturing features. However, the ...