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[資源]
納米基體系用于控制和清除油的溢出
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Nano-based systems for oil spills control and cleanup,Journal of Hazardous Materials272 (2014) 20–27. 影響因子:4.331 摘要:This paper reports the development of uperhydrophobic nanocomposite systems which are also oleophilic. As hydrophobicity is based on low energy surface and surface roughness, the electrospinning technique was selected as the manufacturing technique. N,N-dimethylformamide (DMF) was employed as the polystyrene (PS) solvent. The “Tea-bag” (T-B) nanocomposite system is based on exfoliated graphite surrounded by PS superhydrophobic membranes. The T-B systems were tested regarding its adsorption and absorption rates. To test these properties, it was employed three different water/oil emulsions, i.e., new and used motor oil, which have physical properties (viscosity and specific gravity) similar to heavy crude oil extracted in Brazil, and vacuum pump oil (which does not form oil/water emulsion). It was observed that oil adsorption rate is dependent on oil surface tension, while the absorption rate is mainly dependent on membrane/exfoliated graphite surface area. Experimental data show that oil absorption rates ranged between 2.5 g/g and 40 g/g, while the adsorption rate oscillated from 0.32 g/g/min to 0.80 g/g/min. Furthermore, T-B systems were tested as containment barriers and sorbent materials with good results including its recyclability. 中文翻譯摘要:本文章報道了親油的超疏水的納米復(fù)合材料體系的發(fā)展。因為疏水性以低能面和表面粗糙度為基礎(chǔ),生產(chǎn)工藝選擇靜電紡絲技術(shù)。用DMF作聚苯乙烯(PS)溶劑。“茶袋包”(T-B)納米復(fù)合材料體系以PS超疏水薄膜包裹的膨脹石墨為基礎(chǔ)。測試了T-B體系的吸附和吸收速率。為了測試這些性能,用了三種不同的水/油乳劑,例如新的和用過的車用機油,它的物理性能(粘度和比重)與巴西提取的重質(zhì)原油和真空泵油(不是成型油/水乳膠)。觀察到油的吸附速率依賴于油的表面張力,吸附速率主要依賴于薄膜/膨脹石墨的表面積。實驗數(shù)據(jù)表明油的吸收速率在2.5g/g和40g/g之間,吸附率由0.32g/gmin動蕩到0.80g/gmin。進一步,用T-B體系作為安全殼屏障和吸附劑具有很好的吸附性能和循環(huán)性。 想獲得更多資源可點擊鏈接http://www.tjdrfk.com/news/rthgfb.html 圖片4.jpg 圖片1.jpg 圖片2.jpg 圖片3.jpg |
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