Fabrication of PVDF hollow fiber membranes via integrated phase separation for membrane distillation
Article
Article Title | Fabrication of PVDF hollow fiber membranes via integrated phase separation for membrane distillation |
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ERA Journal ID | 3908 |
Article Category | Article |
Authors | Li, Yue (Author), Jin, Cailan (Author), Peng, Yuelian (Author), An, Quanfu (Author), Chen, Zhengping (Author), Zhang, Jiacheng (Author), Ge, Lei (Author) and Wang, Shaobin (Author) |
Journal Title | Journal of the Taiwan Institute of Chemical Engineers |
Journal Citation | 95, pp. 487-494 |
Number of Pages | 8 |
Year | 2019 |
Place of Publication | Netherlands |
ISSN | 0368-1653 |
1876-1070 | |
1876-1089 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jtice.2018.08.036 |
Abstract | In this study, polyvinylidene fluoride (PVDF) hollow fibers with interpenetrating network morphologies were fabricated via complex thermally induced phase separation (c-TIPS) by integration of non-solvent induced phase separation (NIPS) and thermally induced phase separation (TIPS) at 80 °C and then tested in membrane distillation (MD). The effects of solvents, additive and bore fluid on the membrane morphology, pore structure and MD performance were investigated. Direct-contact membrane distillation (DCMD) for desalination was carried out to evaluate membrane permeability and salt rejection. Using a weak solvent like triethylphosphate (TEP) and weak bore fluid like polyethylene glycol (PEG-200) in the c-TIPS favors the formation of an interpenetrating network morphology. In addition, PEG-200 increased the roughness and water contact angle of the inner skin. The hollow fibers fabricated via the c-TIPS at low temperature presented high permeability, mechanical strength and long-term stability. In desalination of formulated seawater, a distillate flux of 61.6 kg/m2h with NaCl rejection of 99.99% was achieved at feed temperature of 71 °C. |
Keywords | c-TIPS; PVDF hollow fibers; Interpenetrating network; Membrane distillation (MD); Stability; IMMERSION PRECIPITATION; DESALINATION; MORPHOLOGY; PERFORMANCE; HYDROPHOBICITY; BEHAVIOR |
ANZSRC Field of Research 2020 | 340305. Physical properties of materials |
400409. Separation technologies | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Beijing University of Technology, China |
Centre for Future Materials | |
Curtin University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5168/fabrication-of-pvdf-hollow-fiber-membranes-via-integrated-phase-separation-for-membrane-distillation
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