Dual layer asymmetric hollow fiber membranes for gas separation

... coextrusion dual- layer hollow fiber formation • Morphology characterization on resultant dual- layer hollow fibers • Examination of gas separation performance of resultant dual- layer hollow fibers ... delamination-free dual- layer membranes 122 5.3.2 Fabrication of 6FDA–durene–mPDA/PES dual- layer membranes for gas separation 5.3.3 126 Separation performance of 6FDA–durene–mPDA/PES dual- layer membranes ... Conclusion x Summary We have studied the fabrication of dual- layer asymmetric hollow fiber composite membranes for gas separation The dual- layer composite membranes were prepared by simultaneously extruding...

Fundamentals of hollow fiber formation for gas separation

... evaporation of low boiling solvents is the key factor for the formation of defect-free gas separation hollow fiber membranes [17, 21] 1.1.3 The effects of air-gap on hollow fiber formation Air-gap ... and Literature Review on Hollow Fiber Formation for Gas Separation ……… ……………………………….1 1.1 Formation of hollow fiber membranes by phase inversion………………………… 1.1.1 The effect of dope composition and ... FUNDAMENTALS OF HOLLOW FIBER FORMATION FOR GAS SEPARATION PENG NA (B Eng, Dalian University of Technology, P R China) A THESIS SUBMITTED FOT THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF...

Development of chitosan based blend hollow fiber membranes for adsorptive separation in environmental engineering and bioengineering applications

... DEVELOPMENT OF CHITOSAN- BASED BLEND HOLLOW FIBER MEMBRANES FOR ADSORPTIVE SEPARATION IN ENVIRONMENTAL ENGINEERING AND BIOENGINEERING APPLICATIONS LIU CHUNXIU (B.Sc., ... spectra of CS and Pure CA hollow fiber membranes and CS/CA blend hollow fiber membranes 0.5-26.5-OH and 1-26-OH 64 Figure 3.4 XRD diffractograms of CS and Pure CA hollow fiber membranes and ... properties and applications of the membranes in adsorption based separation in water or wastewater treatment and bioengineering Specifically, cellulose acetate was adopted as blending polymer in this...

Fabrication of nanofiltration hollow fiber membranes for sustainable pharmaceutical manufacture

... including the review of nanofiltration, industrial applications of nanofiltration, especially the applications for sustainable pharmaceutical manufacture, fabrication of nanofiltration membranes, and ... 1.3 Applications of nanofiltration membranes 1.3.1 General applications 1.3.2 NF membranes for sustainable pharmaceutical manufacture 1.4 Fabrication of NF membranes ... Morphology of PAI hollow fiber membranes 84 iv 5.3.2 Characterization of modified PAI hollow fiber membranes 85 5.3.3 Nanofiltration performance of PEI modified membranes 90 5.4 Conclusions...

Development of novel chitosan based hollow fiber membranes for applications in water treatment and bioengineering

... DEVELOPMENT OF NOVEL CHITOSAN- BASED HOLLOW FIBER MEMBRANES FOR APPLICATIONS IN WATER TREATMENT AND BIOENGINEERING HAN WEI (B Eng., Tianjin University) A THESIS SUBMITTED FOR THE DEGREE OF ... of CS -based adsorptive hollow fiber membranes The hollow fiber membranes developed will then be studied for the application of wastewater treatment and bioengineering (lipase immobilization for ... weight of wet hollow fiber membrane before drying Wd Weight of dried hollow fiber membranes ρw The density of water ρ CS The density of the chitosan A Adsorption density or capacity of the hollow fiber...

Extractant impregnated hollow fiber membranes for phenol recovery from wastewater

... iv SUMMARY Extractant Impregnated Hollow Fiber Membranes (EIHFM) is a novel technology for the removal of pollutants from wastewater Its advantage over conventional supported liquid membranes ... of the hollow fiber (m) xi Knudsen diffusivity (m²/s) Log-mean diameter of the hollow fiber (m) Effective diffusivity of phenol through EIHFM pores (m²/s) Outer diameter of the hollow fiber (m) ... solvents, Extractant Impregnated Hollow Fiber Membranes (EIHFM) was first described by Praveen and Loh (Praveen and Loh 2013) In the EIHFMs, a solid extractant, Trioctylphosphine oxide (TOPO), was impregnated...

The development of pervaporation hollow fiber membranes for isopropanol dehydration

... dense / asymmetric membranes to hollow fiber membranes It comprises the understanding of pervaporation transport process, the development of novel hollow fiber pervaporation membranes based on ... hollow fiber membranes especially as pervaporation dehydration membranes The development of novel hollow fiber pervaporation membranes is therefore a main objective of this study BTDA-TDI/MDI (P84) ... 1980s for the dehydration of ethanol Since then, 38 solvent dehydration plants for ethanol and isopropanol, units for other solvents dehydration (i.e ester) have been installed world widely [87] There...

Polymers of intrinsic microporosity (PIM) based membranes for gas separation

... for gas separation .4 1.3 Technology milestones of gas separation membranes .6 1.4 New classes of membrane materials 1.5 Polymers of intrinsic microporosity (PIMs) based membranes ... POLYMERS OF INTRINSIC MICROPOROSITY (PIM)- BASED MEMBRANES FOR GAS SEPARATION YONG WAI FEN (B Eng (Chemical) (Hons.), University Putra Malaysia) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF ... Table 7.4 Comparison of gas separation performance of PIM-1/Matrimid (10:90) hollow fiber membranes before and after heat treatment .181 Table 7.5 Gas separation performance of PIM-1/Matrimid...

Thermally rearranged polymeric membranes for gas separation

... Literature review on thermally rearranged membranes for gas separation Thermally rearranged polymer membranes were studied for gas separation since 1990s Okamoto et al [19] studied the gas permeability ... Objective 1.1 Membranes for gas separation 10 1.2 Highly permeable polymer membranes for gas separation 11 1.3 Thermally rearranged polymeric membranes 13 1.4 ... 91 Table 4.6: Pure gas permeation properties of thermally rearranged membranes 95 Table 5.1: Elemental analyses results for precursor and thermally rearranged membranes ...

Fabrication and characterization of composite membranes for gas separation

... Comparison of separation performance for hollow fiber membranes between the O2/N2 mixed gas and pure gas measurements……… … 245 Table B.3 Comparison of separation performance for hollow fiber membranes ... FABRICATION AND CHARACTERIZATION OF COMPOSITE MEMBRANES FOR GAS SEPARATION JIANG LANYING (B Sci., Wuhan University, P R China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHYLOSPHY ... application of gas separation is the separation of noncondensible gases such as Nitrogen enrichment from air, natural gas purification, and Hydrogen recovery from nitrogen and refinery 1.2.1 Nitrogen and...

Development of mixed matrix membranes for gas separation application

... multitude applications of gas separation membranes are listed in Table 1.2 The major applications for gas separation membranes are discussed Table 1.2: Industrial applications of gas separation membranes ... development of membrane gas separation technology [14] Figure 1.2: Milestones on the development of membrane gas separations [14] 1.2 IMPORTANCE OF GAS SEPARATIONS USING MEMBRANES Membrane gas separation ... fiber membranes between the O2/N2 mixed gas and pure gas measurements……… 245 Table B.3 Comparison of separation performance of hollow fiber membranes between the CO2/CH4 mixed gas and pure gas...

Modification of polyimide membranes for gas separation

... MODIFICATION OF POLYIMIDE MEMBRANES FOR GAS SEPARATION XIAO YOUCHANG (B Sc, Xiamen University, China) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL ... Cross-linking Modification of Polyimide Membranes Induced by Amino Terminated Dendrimers……………………………………… 170 8.1.2 Carbonization of Polyimide Membranes to Enhance the Gas Separation Performance…………………………………………………………….172 ... trade-off curve for gas permeability and selectivity The aim of this study was to investigate two different modification methods for polyimide membranes to improve their separation performance...

Polyimides modifications and carbon molecular sieves derived from polyimides for gas separation

... modification 13 iii Polyimides Modifications and Carbon Molecular Sieves Derived from Polyimides for Gas Separation Shao Lu 1.4 Carbon Molecular Sieve Membranes (CMSMs) for Gas Separation 14 1.5 ... Polyimides Modifications and Carbon Molecular Sieves Derived from Polyimides for Gas Separation Shao Lu LIST OF TABLES Table 1.1 Membrane gas separation companies; membranes/modules and gas separations ... commercial gas separation membranes Table 1.1 shows the information on the larger -2- Polyimides Modifications and Carbon Molecular Sieves Derived from Polyimides for Gas Separation Shao Lu gas separation...

Membrane materials and fabrication for gas separation

... Membrane Gas Separation ………………………….9 1.2 Industrial Applications of Membrane Gas Separation …………………….10 1.3 Engineering Principles for Membrane Gas Separation ……………………14 1.3.1 Membrane Materials ... necessities for successful gas separation membranes and strategies for the design of membranes systems must be identified In general, the chemical engineering of membranes for gas separation can ... applications of gas separation membranes are listed in Table 1.4 The major applications for gas separation membranes are discussed Table 1.4 Industrial Applications of Gas Separation Membranes (Spillman...

Dual layer hollow fiber membrane development for forward osmosis and osmosis power generation

... DUAL- LAYER HOLLOW FIBER MEMBRANE DEVELOPMENT FOR FORWARD OSMOSIS AND OSMOSIS POWER GENERATION FU FENG JIANG (B.Eng., Tianjin University) A THESIS SUBMITTED FOR THE DEGREE OF ... thickness in various dual- layer hollow fiber membranes Table 3.2 30 A comparison of mechanical properties of the PBI-PBI dual- layer and PBI-PAN-P0.5 dual- layer hollow fiber membranes with and without ... PBI/POSS-PAN/PVP hollow fiber membrane This work may provide useful insights for the development of outer selective FO and PRO hollow fiber membranes for osmotic power generation as well as for nanofiltration...

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