Fabrication and characterization of hydrophobic PVDF hollow fiber membranes for desalination through direct contact membrane distillation

By D. Hou, Jun Wang, D. Qu, Z. Luan, X. Ren. 2009

139 citations recorded by the source corpus.

The mixture of inorganic salt LiCl and soluble polymer polyethylene glycol (PEG) 1500 as non-solvent additive was introduced to fabricate hydrophobic hollow fiber membrane of polyvinylidene fluoride (PVDF) by phase inversion process, using N,N-dimethylacetamide (DMAc) as solvent and tap water as the coagulation medium. Compared with other three membranes from PVDF/DMAc, PVDF/DMAc/LiCl and PVDF/DMAc/PEG 1500 dope solution, it can be observed obviously by scanning electron microscope (SEM) that the membrane spun from PVDF/DMAc/LiCl/PEG 1500 dope had longer finger-like cavities, ultra-thin skins, narrow pore size distribution and porous network sponge-like structure owing to the synergistic effect of LiCl and PEG 1500. Besides, the membrane also exhibited high porosity and good hydrophobicity. During the desalination process of 3.5 wt% sodium chloride solution through direct contact membrane distillation (DCMD), the permeate flux achieved 40.5 kg/m 2

Subfields: Biomedical Engineering, Renewable Energy, Sustainability and the Environment, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/0eac63199c1982df30b4deb4477b176f155a8320

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In Biomedical Engineering

1. Jun Wang

In Renewable Energy, Sustainability and the Environment

1. D. Hou
2. Z. Luan
3. Jun Wang

In Water Science and Technology

1. X. Sun
2. D. Hou
3. Z. Luan
4. Zhongguang Ji
5. Jun Wang

Citations in the corpus

• Preparation and properties of PVDF composite hollow fiber membranes for desalination through direct contact membrane distillation (2012, background): “Simone et al. [29] prepared microporous ydrophobic PVDF hollow fibers for VMD by using water and oly(vinyl pyrrolidone) (PVP) as pore forming additives, the flux eaching as high as 18 kg/m2 h at 50 ◦C and 20 mbar vacuum presure.”