Preparation and properties of PVDF-fabric composite membrane for membrane distillation

Huo, Ruiting; Gu, Zhengrong; Zuo, Kaihui; Zhao, Guangming

doi:10.1016/j.desal.2009.06.069

Cited by 34 publications

(18 citation statements)

References 23 publications

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“…The membranes used in MD are mainly made of hydrophobic materials such as polypropylene (PP), polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF) [7]. The PP membrane can be prepared by thermally induced phase separation (TIPS) process or melt-spinning and cold-stretching (MSCS) method [8].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of PVDF flat-sheet membranes for direct contact membrane distillation

Hou

Fan

Jiang

et al. 2014

Separation and Purification Technology

112

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of PVDF flat-sheet membranes for direct contact membrane distillation

Hou

Fan

Jiang

et al. 2014

Separation and Purification Technology

112

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“…Feng et al [21] prepared a flat sheet polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) asymmetric membrane and its permeate flux was evaluated by the DCMD process. Huo et al [22] reported evaluation of a flat sheet polyvinylidene fluoride (PVDF) membrane supported by a polyester (PET) filament woven fabric with waterand-oil repellent finish for desalination by DCMD. Qtaishat et al [23] examined membrane fabrication parameters such as type and concentration of SMMs, solvent type and evaporation time before gelation for the performance improvement of SMMs-blended PEI membranes in the DCMD process, and found that most of the SMMs modified PEI membranes achieved better permeate flux than that of a commercial PTFE membrane.…”

Section: Introductionmentioning

confidence: 99%

Performance modeling of direct contact membrane distillation (DCMD) seawater desalination process using a commercial composite membrane

Lee

Kim

et al. 2015

Journal of Membrane Science

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This paper presents the development of a rigorous theoretical model to predict the transmembrane flux of a flat sheet hydrophobic composite membrane, comprising both an active layer of polytetrafluoroethylene and a scrim-backing support layer of polypropylene, in the direct contact membrane distillation (DCMD) process. An integrated model includes the mass, momentum, species and energy balances for both retentate and permeate flows, coupled with the mass transfer of water vapor through the composite membrane and the heat transfer across the membrane and through the boundary layers adjacent to the membrane surfaces. Experimental results and model predictions for permeate flux and performance ratio are compared and shown to be in good agreement. The permeate flux through the composite layer can be ignored in the consideration of mass transfer pathways at the composite membrane. The effect of the surface porosity and the thickness of active and support layers on the process performance of composite membrane has also been studied. Among these parameters, surface porosity is identified to be the main factor significantly influencing the permeate flux and performance ratio, while the relative influence of the surface porosity on the performance ratio is less than that on flux.

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“…Khayet and Matsuura [22] fabricated supported and unsupported PVDF flat-sheet membranes using pure water as pore-forming additive, while Huo et al [17] prepared flat-sheet PVDF-fabric composite membrane by introducing polyester (PET) filament woven fabric as the support. Peng et al [23] prepared a flat-sheet composite membrane for MD with a PVA/PEG hydrophilic layer on PVDF hydrophobic substrate, and found that the permeate flux did not deteriorate by adopting the additional hydrophilic layer.…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of PVDF composite hollow fiber membranes for desalination through direct contact membrane distillation

Hou

Wang

Sun

et al. 2012

Journal of Membrane Science

157

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a b s t r a c tThe polyvinylidene fluoride (PVDF) composite hydrophobic hollow fiber membranes were fabricated for membrane distillation through non-solvent induced phase inversion by dispersing hydrophobic modified calcium carbonate nano-particles in the PVDF casting solution and using the mixture of LiCl and polyethylene glycol (PEG) as non-solvent additive. The influence of nano-particles on the spun hollow fiber membrane characteristics was investigated. The addition of hydrophobic nano-particles could optimize the sandwich-like morphology, narrow the pore size distribution, improve the membrane porosity and increase the membrane surface roughness and contact angle to some extent. The nano-particles also enhanced the crystallinity degree and thermal stability of the hollow fiber. In addition, the composite membranes presented stronger mechanical properties compared to the fiber without particles. During the desalination process of 3.5 wt% sodium chloride solution, the maximum transmembrane permeate flux about 46.3 kg/m 2 h with a lower thermal loss was obtained from the composite fiber when the hot feed inlet temperature and the cold distillate inlet temperature were at 80.5 • C and 20.0 • C, respectively. Furthermore, the composite membrane exhibited satisfying performance stability compared with the pure PVDF membrane in the 30 days continuous desalination experiments, indicating that the as-spun composite fiber may be of great potential to be utilized in MD process for desalination.

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Preparation and properties of PVDF-fabric composite membrane for membrane distillation

Cited by 34 publications

References 23 publications

Preparation and characterization of PVDF flat-sheet membranes for direct contact membrane distillation

Preparation and characterization of PVDF flat-sheet membranes for direct contact membrane distillation

Performance modeling of direct contact membrane distillation (DCMD) seawater desalination process using a commercial composite membrane

Preparation and properties of PVDF composite hollow fiber membranes for desalination through direct contact membrane distillation

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