Effect of internal coagulant on effectiveness of polyvinylidene fluoride membrane for carbon dioxide separation and absorption

Xu, Aotian; Yang, Ai-Hua; Young, Stephanie; deMontigny, David; Tontiwachwuthikul, Paitoon

doi:10.1016/j.memsci.2007.12.008

Cited by 94 publications

(49 citation statements)

References 15 publications

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“…5, the absorption flux of CO 2 increased by increasing the liquid velocity due to the decrease of liquid boundary layer and the increase of liquid mass transfer coefficient. Similar trends were also reported for CO 2 absorption flux using water as absorbent in commercial PP and PTFE membrane contactor [35,50]. An increase in the liquid flow rate led to the enhancement of the CO 2 mass transfer rate.…”

Section: Analysis Of Co 2 Absorption Performancesupporting

confidence: 83%

Performance evaluation and mass transfer study of CO2 absorption in flat sheet membrane contactor using novel porous polysulfone membrane

Nabian

Ghoreyshi

Rahimpour

et al. 2015

Korean J. Chem. Eng.

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The performance of gas-liquid membrane contactor for CO 2 capture was investigated using a novel polysulfone (PSF) flat membrane prepared via non-solvent phase inversion method. Polyvinyl pyrrolidone (PVP) was used as an additive in the dope solution of PSF membranes. Morphological studies by scanning electron microscopy (SEM) analysis revealed that PSF membrane with PVP has a finger-like structure, but the PSF membrane without PVP has a sponge-like structure. Also, characterization results through atomic force microscopy (AFM) and contact angle measurement demonstrated that the porosity, surface roughness and hydrophobicity of the PSF membrane increased with addition of PVP to the dope solution. Mass transfer resistance analysis, based on CO 2 absorption flux, displayed that addition of PVP to the dope solution of PSF membrane decreased membrane mass transfer resistance, and significantly improved CO 2 absorption flux up to 2.7 and 1.8 times of absorption fluxes of PSF membrane without PVP and commercial PVDF, respectively.

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Section: Analysis Of Co 2 Absorption Performancesupporting

confidence: 83%

Performance evaluation and mass transfer study of CO2 absorption in flat sheet membrane contactor using novel porous polysulfone membrane

Nabian

Ghoreyshi

Rahimpour

et al. 2015

Korean J. Chem. Eng.

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“…Since the membrane materials play an essential role in governing the fluid transport through the membrane, there is a need to judiciously select the membrane materials to fulfil the above requirements. Presently, most of the commercially and in-house made hollow fibre membranes are made from polymeric materials such as, but not limited to, polyvinylidene fluoride (PVDF), polypropylene (PP), polyethylene (PE), polyimide, and polysulfone [5,6]. A considerable amount of reports are found in the literature on the morphological changes of polymeric membranes after having been in contact with organic fluids for a certain length of time.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of affordable hydrophobic ceramic hollow fibre membrane for contacting processes

et al. 2017

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Affordable hydrophobic hollow fibre membranes were prepared using kaolin and alumina based ceramic powders via a combined phase inversion and sintering technique, followed by a grafting with fluoroalkylsilane (FAS). The crux of the matter in this paper is to study the changes in the properties of the hollow fibre membranes (gas permeation, mechanical strength, pore size, porosity, tortuosity, morphology, and contact angle) by the addition of alumina (Al 2 O 3 ) to the pure kaolin with mono or multiparticle sizes. By varying the overall loading and particle size of alumina addition, different morphologies of the membranes were obtained due to the differences in the path lengths during phase inversion process for each solvent and nonsolvent exchange. The successful grafting with FAS was evidenced by the increase in contact angle from nearly equal to zero degree before grafting to 140° after grafting. Kaolin-alumina-4, one of the hollow fibres fabricated in this work, achieved a mean pore size of 0.25 µm with the bending strength of 96.4 MPa and high nitrogen permeance of 2.3×10 5 mol·m 2 ·Pa 1 ·s 1 , which makes the hollow fibre most suitable for the membrane contactor application.

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“…This mechanism will drive the solidified walls to extend the droplets along the depth direction, which resulted in finger-like shapes formation. However, since slow solidification was occurred near the inner surface in this work, the wall between droplets was difficult to formed, thus many small droplets combined to form larger droplets which then results in sponge-like shape structure [17]. In general, membrane porosity has a direct relationship to the flux permeation, rejection and also mechanical properties of membrane, and can be considered as a key specification factors for the membrane performance.…”

Section: Advanced Materials Research Vols 488-489mentioning

confidence: 97%

Effects of Water as Non-Solvent Additive on Performance of Polysulfone Ultrafiltration Membrane

Yunos

Harun

Basri

et al. 2012

AMR

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Abstract. In this work, polysulfone ultrafiltration membranes were prepared via simple phase inversion with distilled water as non-solvent additive. The main reason for the addition of water in polysulfone dope solution preparation was to enhance the membranes structure. In the dope, 15 wt. % of polysulfone was used and water was varied up to 6 wt. %. The effects of water on morphology, porosity and tensile properties were investigated in detail. From the porosity test, results showed that the addition of water has improved membrane porosity up to 53 %. The FESEM images revealed that membrane morphology has also been modified. However, the tensile properties of membrane decreased as water content increased which may be due to the porosity interaction between polysulfone/NMP with water.

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Effect of internal coagulant on effectiveness of polyvinylidene fluoride membrane for carbon dioxide separation and absorption

Cited by 94 publications

References 15 publications

Performance evaluation and mass transfer study of CO2 absorption in flat sheet membrane contactor using novel porous polysulfone membrane

Performance evaluation and mass transfer study of CO2 absorption in flat sheet membrane contactor using novel porous polysulfone membrane

Fabrication and characterization of affordable hydrophobic ceramic hollow fibre membrane for contacting processes

Effects of Water as Non-Solvent Additive on Performance of Polysulfone Ultrafiltration Membrane

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