Preparation and properties of homogeneous-reinforced polyvinylidene fluoride hollow fiber membrane

2013 ◽  
Vol 264 ◽  
pp. 801-810 ◽  
Author(s):  
Xuliang Zhang ◽  
Changfa Xiao ◽  
Xiaoyu Hu ◽  
Qianqian Bai
Keyword(s):  
Hollow Fiber ◽  
Polyvinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Homogeneous Reinforced

Lake Water Treatment Using Polyurethane-Polyvinylidene Fluoride Hollow Fiber Blend Membrane and Polyvinylidene Fluoride Hollow Fiber Membrane in a Coagulation-Microfiltration Process

2012 ◽  
Vol 518-523 ◽  
pp. 755-759
Author(s):  
Liang Wang ◽  
Bin Zhao ◽  
Shu Ling Ma ◽  
Hong Wei Zhang ◽  
Qin Yang
Keyword(s):  
Hollow Fiber ◽  
Lake Water ◽  
Polyvinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Pollutant Removal ◽  
Transmembrane Pressure ◽  
Permeate Flux ◽  
Fiber Membrane ◽  
Blend Membrane ◽  
Ring Structures

Polyurethane-polyvinylidene fluoride (PU-PVDF) hollow fiber blend membrane prepared by melting, spinning and drawing processes was used to treat lake water in a submerged coagulation-microfiltration (SCMF) process. This novel membrane is characterized by its elastic pore size increase with the pressure increase; therefore, the backwashing step could effectively remove the depositions stuck in membrane pores. Compared to the system using polyvinylidene fluoride (PVDF) hollow fiber membrane, the membrane anti-fouling ability was stronger in the system using PU-PVDF blend membrane, and the transmembrane pressure increased more slowly at a fixed permeate flux. Organic matters were removed comparably for both membranes during the first 3 h treatment, but those with benzene ring structures were susceptibly restricted by PU-PVDF blend membrane as the filtration went on. The turbidity removal was stable in the PU-PVDF system with an average of 97%, and was slightly higher than that in the PVDF system. The outstanding anti-fouling ability and excellent pollutant removal performance make the PU-PVDF hollow fiber blend membrane a better candidate for the SCMF process.

Polyvinylidene fluoride hollow fiber membrane and its use for treatment of natural water

2014 ◽  
Vol 54 (7) ◽  
pp. 562-567
Author(s):  
A. B. Maiboroda ◽  
D. V. Petrov ◽  
V. A. Kichik ◽  
E. N. Starikov
Keyword(s):  
Hollow Fiber ◽  
Natural Water ◽  
Polyvinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane

scholarly journals Fabrication of High Performance PVDF Hollow Fiber Membrane Using Less Toxic Solvent at Different Additive Loading and Air Gap

Membranes ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 843
Author(s):  
Hazirah Syahirah Zakria ◽  
Mohd Hafiz Dzarfan Othman ◽  
Siti Hamimah Sheikh Abdul Kadir ◽  
Roziana Kamaludin ◽  
Asim Jilani ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Polyvinylidene Fluoride ◽  
High Performance ◽  
Hollow Fiber Membrane ◽  
Water Flux ◽  
Air Gap ◽  
Polymeric Membranes ◽  
Fiber Membrane ◽  
Peg 400 ◽  
Sustainable Environment

Existing toxic solvents in the manufacturing of polymeric membranes have been raising concerns due to the risks of exposure to health and the environment. Furthermore, the lower tensile strength of the membrane renders these membranes unable to endure greater pressure during water treatment. To sustain a healthier ecosystem, fabrication of polyvinylidene fluoride (PVDF) hollow fiber membrane using a less toxic solvent, triethyl phosphate (TEP), with a lower molecular weight polyethylene glycol (PEG 400) (0–3 wt.%) additive were experimentally demonstrated via a phase inversion-based spinning technique at various air gap (10, 20 and 30 cm). Membrane with 2 wt.% of PEG 400 exhibited the desired ultrafiltration asymmetric morphology, while 3 wt.% PEG 400 resulting microfiltration. The surface roughness, porosity, and water flux performance increased as the loading of PEG 400 increased. The mechanical properties and contact angle of the fabricated membrane were influenced by the air gap where 20 cm indicate 2.91 MPa and 84.72°, respectively, leading to a stronger tensile and hydrophilicity surface. Lower toxicity TEP as a solvent helped in increasing the tensile properties of the membrane as well as producing an eco-friendly membrane towards creating a sustainable environment. The comprehensive investigation in this study may present a novel composition for the robust structure of polymeric hollow fiber membrane that is suitable in membrane technology.

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