Casting of a superhydrophobic membrane composed of polysulfone/Cera flava for improved desalination using a membrane distillation process
Superhydrophobic membranes are necessary for effective membrane-based seawater desalination. This paper presents the successful fabrication of a novel electrospun nanofibrous membrane composed of polysulfone and Cera flava{,} which represents a novel class of enhanced performance membranes consistin...
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| Những tác giả chính: | , , , , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
The Royal Society of Chemistry
2023
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| Truy cập trực tuyến: | https://scholar.dlu.edu.vn/handle/123456789/3000 http://dx.doi.org/10.1039/C7RA12474K |
| Các nhãn: |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Tóm tắt: | Superhydrophobic membranes are necessary for effective membrane-based seawater desalination. This paper presents the successful fabrication of a novel electrospun nanofibrous membrane composed of polysulfone and Cera flava{,} which represents a novel class of enhanced performance membranes consisting of a superhydrophobic nanofibrous layer and hydrophobic polypropylene (PP). Cera flava{,} which helps lower the surface energy{,} was found to be the ideal additive for increasing the hydrophobicity of the polysulfone (PSF) polymeric solution because of its components such as long-chain hydrocarbons{,} free acids{,} esters{,} and internal chain methylene carbons. In the fabricated membrane{,} consisting of 10 v/v% Cera flava{,} the top PSF–CF nanofibrous layer is active and the lower PP layer is supportive. The hybrid membrane possesses superhydrophobicity{,} with an average contact angle of approximately 162°{,} and showed high performance in terms of rejection and water flux. This work also examined the surface area{,} pore size distribution{,} fiber diameter{,} surface roughness{,} mechanical strength{,} water flux{,} and rejection percentage of the membrane. The salt rejection was above 99.8%{,} and a high permeate flux of approximately 6.4 LMH was maintained for 16 h of operation. |
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