Effect of support on PVDF membranes for distillation process

Pagliero, Marcello; Comite, Antonio; Soda, Omar; Costa, Camilla

doi:10.1016/j.memsci.2021.119528

Cited by 16 publications

(8 citation statements)

References 47 publications

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“…The membranes were prepared following the protocol described in previous works [37,38]. First, a commercial non-woven support (PET Viledon ® FO-2401, Freudenberg, Weinheim, Germany) was attached on a flat glass with adhesive tape and then impregnated with the solvent to improve the solution penetration, increasing the adhesion between the two materials.…”

Section: Membrane Preparationmentioning

confidence: 99%

A Single Step Preparation of Photothermally Active Polyvinylidene Fluoride Membranes Using Triethyl Phosphate as a Green Solvent for Distillation Applications

et al. 2021

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Membrane distillation is a growing technology that can address the growing problem of water shortage. The implementation of renewable energy and a reduction in the environmental impact of membrane production could improve the sustainability of this process. With this perspective, porous hydrophobic polyvinylidene fluoride (PVDF) membranes were prepared using triethyl phosphate (TEP) as a green solvent, using the non-solvent induced phase separation technique. Different amounts of carbon black were added to dope solutions to improve the photothermal properties of the membranes and to enable direct heating by solar energy. By optimizing the preparation conditions, membranes with porosity values as high as 87% were manufactured. Vacuum membrane distillation tests carried out using a concentrated NaCl solution at 50 °C showed distillate fluxes of up to 36 L/m2 h and a complete salt rejection. Some preliminary studies on the photothermal performance were also conducted and highlighted the possibility of using such membranes in a direct solar membrane distillation configuration.

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Section: Membrane Preparationmentioning

confidence: 99%

A Single Step Preparation of Photothermally Active Polyvinylidene Fluoride Membranes Using Triethyl Phosphate as a Green Solvent for Distillation Applications

et al. 2021

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“…47 The QS further promotes microbial social activities and enhance community behaviour through the expression of certain genes. 48 The dispersion of the biofilm is augmented by QS. 49 Thus, QS further encourages biofilm development.…”

Section: Biofilm Formationmentioning

confidence: 99%

Biofouling phenomena in membrane distillation: mechanisms and mitigation strategies

Mpala

Etale

Richards

et al. 2023

Environ. Sci.: Adv.

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“…These changes in membrane roughness cohere with WCA measurements. In MD, rough membranes necessitate increased turbulence of the feed solution, thus lowering the heat transfer resistance at the boundary layer and facilitating better vapor transport (Pagliero et al, 2021).…”

Section: Surface Roughness Of Pvdf Membranesmentioning

confidence: 99%

Carbon nanotubes and silver nanoparticles modification of PVDF membranes for improved seawater desalination in direct contact membrane distillation

Mpala

Richards

Etale³

et al. 2023

Front. Membr. Sci. Technol.

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Membrane distillation (MD) has emerged as a novel technology capable of recovering fresh water from brackish, saline, and wastewater. However, its industrial application is limited to various challenges including membrane properties. In this work, the polyvinylidene fluoride (PVDF) membranes were modified to improve their performance towards desalination of simulated seawater particularly, acid treated carbon nanotubes (f-CNTs) and cellulose nanocrystals-capped silver nanoparticles (CNC-AgNPs) were incorporated into the PVDF matrix prior to casting. Simulated seawater (33.59 g/L) was used as the feed during DCMD tests. The modified membrane displayed improved tensile strength, surface roughness, and hydrophobicity. Interestingly, minimal leaching of AgNPs (0.378 ± 0.0628 ppm) was recorded within 72 h. Although water flux (0.179 ± 0.0303 kg/m2/hr) remained relatively low, salt rejection (99.8%) improved upon incorporation of NPs. This provides a one-step solution towards better performance in MD for recovery of freshwater from high saline seawater.

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Effect of support on PVDF membranes for distillation process

Cited by 16 publications

References 47 publications

A Single Step Preparation of Photothermally Active Polyvinylidene Fluoride Membranes Using Triethyl Phosphate as a Green Solvent for Distillation Applications

A Single Step Preparation of Photothermally Active Polyvinylidene Fluoride Membranes Using Triethyl Phosphate as a Green Solvent for Distillation Applications

Biofouling phenomena in membrane distillation: mechanisms and mitigation strategies

Carbon nanotubes and silver nanoparticles modification of PVDF membranes for improved seawater desalination in direct contact membrane distillation

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