Fabrication of renewable gutta percha/silylated nanofibers membrane for highly effective oil-water emulsions separation

被引:23
|
作者
Yang, Yichun [1 ]
Peng, Pai [2 ]
Yang, Qing [2 ]
Wang, Dongmei [2 ]
Dong, Juane [3 ]
机构
[1] Northwest A&F Univ, Coll Chem & Pharm, Yangling 712100, Shaanxi, Peoples R China
[2] Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China
[3] Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China
关键词
Gutta percha; Nanofibers; Oil-water emulsion separation; Membrane; EUCOMMIA-ULMOIDES GUM; CELLULOSE NANOFIBERS; EFFICIENT; SURFACE; SUPERHYDROPHILICITY; MECHANISM; FILMS; WOOD;
D O I
10.1016/j.apsusc.2020.147163
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Oil contaminant in water has become serious environmental pollution that causes danger for human health. Membrane separation technology is considered as one of the most efficient treatment for oily wastewater. Here, we report that the renewable hydrophobic membranes for oil-water emulsions separation were fabricated by incorporating gutta percha (GP) into silylated nanofibers (SNF) from herbal residues. The obtained membranes were characterized by Raman spectra, XPS, XRD, SEM, AFM, TGA, and DSC. Subsequently, the effects of gutta percha loading levels on membrane hydrophobicity, mechanical property, water vapor permeability, and efficacy of oil-water emulsions separation were investigated. Incorporation of GP into SNF is benefit for enhancing hydrophobicity, thermal stability, and mechanical performance. More importantly, these GP/SNF membranes exhibited high-efficiency separation ability for oil-water emulsions. Especially, GP/SNF-20 membrane presented the highest permeation fluxes of 3624, 3308, 3186 and 2866 L m(-2) h(-1) W-1 for separation of petroleum ether, dichloromethane, toluene, and cyclohexane-in-water emulsions, respectively.
引用
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页数:11
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