Cellulose membranes via a top-down approach from loofah for oil/water separation

Degradable materials have been used for the preparation of oil-water separation membranes, especially cellulose-based membranes. However, the extraction of cellulose nanofibers is time, energy, and chemically intensive and the source of cellulose is mainly wood, bamboo, cotton, and flax. Herein, we...

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Bibliographic Details
Published in:Biomass conversion and biorefinery 2024-08, Vol.14 (15), p.17167-17175
Main Authors: Xing, Tong, Dong, Changqing, Hu, Xiaoying, Zheng, Quanjun, Zhang, Junjiao, Zhao, Ying, Xue, Junjie, Wang, Xiaoqiang
Format: Article
Language:English
Subjects:
Bamboo
Biotechnology
Cellulose
Cellulose esters
Cellulose fibers
Cellulose nitrate
Contact angle
Cotton
Energy
Flax
Hydrophobic surfaces
Hydrophobicity
Membranes
Original Article
Renewable and Green Energy
Separation
Substrates
Surface water
Tear strength
Water purification
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Summary:Degradable materials have been used for the preparation of oil-water separation membranes, especially cellulose-based membranes. However, the extraction of cellulose nanofibers is time, energy, and chemically intensive and the source of cellulose is mainly wood, bamboo, cotton, and flax. Herein, we report a top-down approach for the scalable production of structurally asymmetric composite cellulose membranes from loofah. The tear strength of the membrane was 388.7% times of the PVDF membrane and the preparation cost was only 3.3% of the price of commercially available nitrocellulose membrane. A superhydrophobic renewable and degradable cellulose membrane with a surface water contact angle of 152.3°can be prepared by a one-step method using the cellulose membrane as a substrate and dodecyltriethoxysilane as a modifier. The superhydrophobic cellulose membrane could separate oil and water by continuous filtration with high efficiency (98.1%) and high flux (2349Lm -2 h -1 ). Such a simple and low-cost method could promote the popularity of separation membranes.
ISSN:2190-6815
2190-6823
DOI:10.1007/s13399-023-03766-0