Hollow fiber modules with ceramic-supported PDMS composite membranes for pervaporation recovery of bio-butanol

Liu, Danyu; Liu, Gongping; Meng, Lie; Dong, Ziye; Huang, Kang; Jin, Wanqin

doi:10.1016/j.seppur.2015.03.029

Cited by 59 publications

(19 citation statements)

References 42 publications

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“…The boundary conditions for mass conservation equations in the feed phase are as follows: at z=L, Outflow condition (26) at z=0, C w-f =C 0,w (Inlet boundary) (27) at r=R 3 ,…”

Section: Feed Phase Simulationmentioning

confidence: 99%

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Synthesis, Evaluation, Modeling and Simulation of Nano-Pore NAA Zeolite Membranes

Kazemimoghadam¹

2017

ANTJ

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“…The boundary conditions for mass conservation equations in the feed phase are as follows: at z=L, Outflow condition (26) at z=0, C w-f =C 0,w (Inlet boundary) (27) at r=R 3 ,…”

Section: Feed Phase Simulationmentioning

confidence: 99%

“…Extensive studies have been conducted for mass transfer modeling of PV systems [23][24][25][26][27][28][29][30]. Recently Rezakazemi et al (2011) proposed a model for PV separation of water/ethylene glycol solution based on solving equations of mass and momentum conservation (Navier-Stokes equations) with Finite Element Method (FEM) [25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore NAA Zeolite Membranes

Kazemimoghadam¹

2017

ANTJ

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“…at z=L, Outflow condition (26) at z=0, Cw-f =C0,w (Inlet boundary) (27) at r=R3, (No flux condition) (28) At the interface of the membrane-feed, the equilibrium condition is assumed:…”

Section: Feed Phase Simulationmentioning

confidence: 99%

“…This produces a complex morphology and transport situation. Extensive studies have been conducted for mass transfer modeling of PV systems [23][24][25][26][27][28][29][30]. Recently Rezakazemi et al (2011) proposed a model for PV separation of water/ethylene glycol solution based on solving equations of mass and momentum conservation (Navier-Stokes equations) with Finite Element Method (FEM) [25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore Naa Zeolite Membranes

Mansoor¹,

Zahra²

2017

IJASE

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Zeolite membranes have uniform and molecular-sized pores that separate molecules based on the differences in the molecules' adsorption and diffusion properties. Strong electrostatic interaction between ionic sites and water molecules (due to its highly polar nature) makes the zeolite NaA membrane very hydrophilic. Zeolite NaA membranes are thus well suited for the separation of liquid-phase mixtures by pervaporation. In this study, experiments were conducted with various Ethanol-water mixtures (1-20 wt. %) at 25 °C. Total flux for Ethanol-water mixtures was found to vary from 0.331 to 0.229 kg/m 2 .h with increasing Ethanol concentration from 1 to 20 wt.%. Ionic sites of the NaA zeolite matrix play a very important role in water transport through the membrane. These sites act both as water sorption and transport sites. Surface diffusion of water occurs in an activated fashion through these sites. The precise Nano-porous structure of the zeolite cage helps in a partial molecular sieving of the large solvent molecules leading to high separation factors. A comparison between experimental flux and calculated flux using Stephan Maxwell (S.M.) correlation was made and a linear trend was found to exist for water flux through the membrane with Ethanol concentration. A comprehensive model also was proposed for the Ethanol/water pervaporation (PV) by Finite Element Method (FEM). The 2D model was masterfully capable of predicting water concentration distribution within both the membrane and the feed side of the pervaporation membrane module.

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“…Memebrane matrial and formation are among the factors essential to economical application and remains to be one of the research focuses. Polydimethylsiloxane (PDMS) is a widely used material for preparing hydrophobic pervaporation membranes . Several strategies such as block/graft copolymerization, polymer blending, and organic/inorganic mixed matrix materials, are developed to create new membrane materials that combine the hydrophobicity of PDMS and the special properties of other compounds.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and structural tuning of novel composite hollow fiber membranes for pervaporation

Zhu

Jiang

2016

J of Applied Polymer Sci

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A series of polysiloxaneimide (PSI)/polyetherimide (PEI) composite hollow fibers were fabricated by coextrusion and phase inversion. The hydrophobic PSI outer layer was set as the selective layer which was supported by the PEI inner layer. The PSI was synthesized by polycondensation of 3,3 0 ,4,4 0 -Biphenyltetracarboxylic Dianhydride (BPDA) with amino siloxane X-22-161A and a chain extender, 1,3-Bis (3-aminopropyl) 21,1,3,3-tertramethyldisiloxane (BATS). It was found that the macroscopic uniformity of PSI layer was dependent on the dope formulation, coagulant composition and dope flow rate: (1) the higher similarity degree of the solvent(s) for different layers in terms of solubility parameters, (2) the utilization of surfactant as a component in the water coagulant, and (3) higher flow rates of the outer layer dopes, led to the formation of more uniform and smoother PSI outer layer. The maximum outer layer thickness was around 2 lm. The bulk of the PEI layers were porous with finger like macrovoids. The outer surface of the inner PEI layer for some batches of the hollow fibers was confirmed to be porous. The original dual-layer hollow fibers showed poor pervaporation performance. Post treatment was applied to cure the hollow fiber, delivering composite membranes with performance dominated by the coating material of PDMS.

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Hollow fiber modules with ceramic-supported PDMS composite membranes for pervaporation recovery of bio-butanol

Cited by 59 publications

References 42 publications

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore NAA Zeolite Membranes

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore NAA Zeolite Membranes

Synthesis, Evaluation, Modeling and Simulation of Nano-Pore Naa Zeolite Membranes

Fabrication and structural tuning of novel composite hollow fiber membranes for pervaporation

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