CFD-based genetic programming model for liquid entry pressure estimation of hydrophobic membranes

Chamani, Hooman; Yazgan‐Birgi, Pelin; Matsuura, Takeshi; Rana, Dipak; Ali, Mohamed I. Hassan; Arafat, Hassan A.; Lan, Christopher Q.

doi:10.1016/j.desal.2019.114231

Cited by 30 publications

(10 citation statements)

References 50 publications

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“…CA of water was measured from five different positions of the sample using Digital Microscope 1000× magnification (OEM, Ningbo, China) using static drop method. LEP was determined according to recommendations described in [61][62][63]. A circular sample with the radius of 1.25 cm was clenched inside the sealed chamber, and a test was run with air at gradually increasing pressure.…”

Section: Methods Of Characterizationmentioning

confidence: 99%

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Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions

et al. 2020

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The paper describes desalination by membrane distillation (MD) using ion-track membranes. Poly(ethylene terephthalate) (PET) ion-track membranes were hydrophobized by the immobilization of hydrophobic vinyl-silica nanoparticles (Si NPs). Si NPs were synthesized by the sol-gel method, and the addition of the surfactant led to the formation of NPs with average size of 40 nm. The thermal initiator fixed to the surface of membranes allowed attachment of triethoxyvinyl silane Si NPs at the membrane surface. To further increase hydrophobicity, ethoxy groups were fluorinated. The morphology and chemical structure of prepared membranes were characterized by SEM, FTIR, XPS spectroscopy, and a gas permeability test. Hydrophobic properties were evaluated by contact angle (CA) and liquid entry pressure (LEP) measurements. Membranes with CA 125–143° were tested in direct contact membrane distillation (DCMD) of 30 g/L saline solution. Membranes showed water fluxes from 2.2 to 15.4 kg/(m2·h) with salt rejection values of 93–99%.

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Section: Methods Of Characterizationmentioning

confidence: 99%

“…LEP was estimated experimentally and using model of combination of computational fluid dynamics and genetic programming (CFD-GP) developed by Chamani et al [63]. A good correlation was found between the experimental data and CFD-GP model.…”

Section: Preparation Of Hydrophobic Membranementioning

confidence: 99%

Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions

et al. 2020

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“…Servi et al [ 29 ] quantified the effects of initiated chemical vapor deposition polymer coatings on PC TeM permeability and LEP. Chamani et al [ 30 ] developed a CFD-based genetic programming model for LEP estimation and tested it on TeMs. Furthermore, as mentioned above, the unique properties of TeMs can increase the accuracy of water purification.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Membrane Distillation and Impact of Track-Etched Membranes

et al. 2021

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Membrane distillation (MD) is a rapidly developing field of research and finds applications in desalination of water, purification from nonvolatile substances, and concentration of various solutions. This review presents data from recent studies on the MD process, MD configuration, the type of membranes and membrane hydrophobization. Particular importance has been placed on the methods of hydrophobization and the use of track-etched membranes (TeMs) in the MD process. Hydrophobic TeMs based on poly(ethylene terephthalate) (PET), poly(vinylidene fluoride) (PVDF) and polycarbonate (PC) have been applied in the purification of water from salts and pesticides, as well as in the concentration of low-level liquid radioactive waste (LLLRW). Such membranes are characterized by a narrow pore size distribution, precise values of the number of pores per unit area and narrow thickness. These properties of membranes allow them to be used for more accurate water purification and as model membranes used to test theoretical models (for instance LEP prediction).

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“…When LEP is high the membrane is less susceptible to pore wetting. LEP is dependent on the membrane pore size, membrane hydrophobicity, composition of feed solution and also membrane thickness [18,19]. One of the equations to calculate LEP is the following Franken's equation [12]:…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature and salt on PVDF membrane wetting properties

Jiang¹,

Chamani²,

Matsuura³

et al. 2021

JCM

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Membrane distillation (MD) is a thermally driven separation process. Despite many advantages over other membrane separation processes, pore wetting hampers the wide commercial applications of the MD process. In this paper, the effect of temperature and presence (or absence) of salt in the feed solution on the wetting properties of commercial polyvinylidene fluoride (PVDF) membrane during a period of eight weeks was investigated. Liquid entry pressure (LEP) and water contact angle (WCA) were employed to characterize the wetting properties of the PVDF membrane. The result shows that the temperature has a significant impact on the decrease of the contact angle of the PVDF membrane.

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CFD-based genetic programming model for liquid entry pressure estimation of hydrophobic membranes

Cited by 30 publications

References 50 publications

Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions

Modification of PET Ion-Track Membranes by Silica Nanoparticles for Direct Contact Membrane Distillation of Salt Solutions

Recent Progress in the Membrane Distillation and Impact of Track-Etched Membranes

Effect of temperature and salt on PVDF membrane wetting properties

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