Blar i NTNU Open på forfatter "He, Xuezhong"
-
A review of material development in the field of carbon capture and the application of membrane-based processes in power plants and energy-intensive industries
He, Xuezhong (Journal article; Peer reviewed, 2018)This review highlights recent developments and future perspectives on CO2 capture from power plants and energy-intensive industries to reduce CO2 emissions. Different types of membrane materials for CO2 capture were reviewed ... -
Biomimetic material functionalized mixed matrix membranes for enhanced carbon dioxide capture
Zhang, Yiming; Wang, Huixian; Zhou, Siyu; Wang, Jing; He, Xuezhong; Liu, Jindun; Zhang, Yatao (Journal article; Peer reviewed, 2018)Carbonic anhydrase (CA) has been widely used in gas separation membranes because of its high affinity for CO2 molecules. In this work, a novel biomimetic material (Co-2,6-bis(2-benzimidazolyl)pyridine, CoBBP) which has a ... -
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 ... -
Computational prediction of cellulose solubilities in ionic liquids based on COSMO-RS
Chu, Yunhan; Zhang, Xiangping; Hillestad, Magne; He, Xuezhong (Journal article; Peer reviewed, 2018)A computational approach is presented for prediction of cellulose solubilities in ionic liquids (ILs) based on COSMO-RS (Conductor-like Screening Model for Real Solvents). Thermodynamically stable molecular structures were ... -
Development of Hollow Fiber Carbon Membranes for CO2 Separation
He, Xuezhong (Doktoravhandlinger ved NTNU, 1503-8181; 2011:42, Doctoral thesis, 2011)CO2 capture from flue gases by membrane technology in post combustion power plants could be used for the reducing of CO2 emissions. Previous work has demonstrated that the carbon membrane can achieve a high separation ... -
Fabrication of Defect-Free Cellulose Acetate Hollow Fibers by Optimization of Spinning Parameters
He, Xuezhong (Journal article; Peer reviewed, 2017)Spinning of cellulose acetate (CA) with the additive polyvinylpyrrolidone (PVP) in N-methyl-2-pyrrolidone (NMP) solvent under different conditions was investigated. The spinning parameters of air gap, bore fluid composition, ... -
FSC hollow fibre membranes - Optimization of coating and drying procedures
Ruud, Anniken Amos (Master thesis, 2016)Composite hollow fibre membranes were prepared by coating PVAm and PDMS, on a PSf support. Bundles consisting of 100 fibres were placed in PVC tubes with diameter 0.6cm, which gave a packing density of 30,3%. The bundles ... -
Investigation of a membrane contactor for CO2 capture from natural gas/biogas
Garrido Lopez, Jaime (Master thesis, 2016)Carbon dioxide needs to be separated from natural gas or biogas streams and membrane contactors can be a very good alternative for it. In this work a poly(1-trimethylsilyl-1-propyne) supported by a polyvinylidene fluoride ... -
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 ... -
Membranes for Environmentally Friendly Energy Processes
He, Xuezhong; Hagg, May-Britt (Journal article; Peer reviewed, 2012) -
MoDoop: An Automated Computational Approach for COSMO-RS Prediction of Biopolymer Solubilities in Ionic Liquids
Chu, Yunhan; He, Xuezhong (Journal article; Peer reviewed, 2019)An automated computational framework (MoDoop) was developed to predict the biopolymer solubilities in ionic liquids (ILs) on the basis of conductor-like screening model for real solvents calculations of two thermodynamic ... -
MoleGear: A Java-based Platform for Evolutionary de novo Molecular Design
He, Xuezhong; Chu, Yunhan (Journal article; Peer reviewed, 2019)A Java-based platform, MoleGear, is developed for de novo molecular design based on the chemistry development kit (CDK) and other Java packages. MoleGear uses evolutionary algorithm (EA) to explore chemical space, and a ... -
Novel Tubular Carbon Membranes Prepared from Natural Rattans
He, Xuezhong (Journal article; Peer reviewed, 2019)The novel tubular carbon membranes produced from natural materials are, for the first time, reported. The novelty of this idea is to use natural rattans as precursors for making carbon membranes to address the challenges ... -
Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes
He, Xuezhong (Journal article; Peer reviewed, 2017)Cellulose acetate (CA) hollow fibers were spun from a CA+ Polyvinylpyrrolidone (PVP)/N-methyl-2-pyrrolidone (NMP)/H2O dope solution and regenerated by deacetylation. The complete deacetylation time of 0.5 h was found at a ... -
Post-combustion carbon capture technologies: Energetic analysis and life cycle assessment
Zhang, Xiangping; Singh, Bhawna; He, Xuezhong; Gundersen, Truls; Deng, Liyuan; Zhang, Suojiang (Journal article; Peer reviewed, 2014)An integrated framework focusing on the energetic analysis and environmental impacts of a CO2 capture and storage (CCS) system is presented, in which the process simulation method and the life cycle assessment (LCA) method ... -
Process Simulation and Cost Evaluation of Carbon Membranes for CO2 Removal from High-Pressure Natural Gas
Chu, Yunhan; He, Xuezhong (Journal article; Peer reviewed, 2018)Natural gas sweetening is required to remove the acid gas CO2 to meet gas grid specifications. Membrane technology has a great potential in this application compared to the state-of-the-art amine absorption technology. ... -
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 ... -
Strategy Combining Free Volume Theory and Fragment Contribution Corresponding State Method for Predicting Viscosities of Ionic Liquids
Tu, Wenhui; Zeng, Shaojuan; Zhang, Xiaochun; He, Xuezhong; Liu, Lei; Zhang, Suojiang; Zhang, Xiangping (Journal article; Peer reviewed, 2019)In this study, we proposed a strategy that combines the fragment contribution corresponding states (FCCS) and free volume theory (FVT) method, namely FCCS–FVT, to calculate the viscosities of ionic liquids (ILs) covering ... -
Testing and Optimization of PVAm/PVA Blend Membranes for Biogas Upgrading
Berstad, Eivind (Master thesis, 2012)Membrane technology is an energy saving, environment friendly and low cost separation technology. This master’s thesis has focused on testing and optimization of polyvinylamine/polyvinylalcohol (PVAm/PVA) blend fixed-site-carrier ...