纳米聚丙烯纤维吸油特性及对水面浮油的吸附研究

Study on the Oil Adsorptive Property of Nano-Polypropylene Fiber and its Application on Floating Oil Adsorption on Water Surface

近年来海洋溢油事故频繁发生,开展高性能吸油材料制备及其吸油特性研究具有十分重要的意义。采用称重法研究了纳米聚丙烯纤维的吸油能力、吸油动力学及其重复使用性,此外还探讨了纳米聚丙烯纤维对水面浮油的吸附能力及温度对吸油效果的影响。实验结果表明,纳米聚丙烯纤维对汽油、柴油、机油和原油的吸油能力分别为22.30 g/g、29.50 g/g、46.30 g/g、34.90 g/g。纳米聚丙烯纤维在重复使用8次后,仍具有较高的吸附容量。纳米聚丙烯纤维对机油和原油的吸附符合Lagergren二级吸附动力学模型,饱和吸油倍数分别为54.05 g/g和35.34 g/g,饱和吸附时间分别是43.40 min和8.66 min。温度对纳米聚丙烯纤维的吸油效果有影响,影响趋势与油的粘度、密度等物理性质有关。

As oil spill accidents happened in recent years, it is of great significance to preparation and research of the oil sorbent materials with high oil sorption capacities. Oil absorption capability of nano-polypropylene fiber, the adsorption kinetic, and the repetitive usability were studied by weighing method. In addition, the adsorption capability of nano-polypropylene fiber for floating oil on water surface, and the temperature influences on adsorption were discussed. The results showed that the sorption capacities of the nano-polypropylene fiber for gasoline, diesel, motor oil and crude oil were 22.30 g/g, 29.50 g/g, 46.30 g/g and 34.90 g/g, respectively. When nano-polypropylene fiber was repetitively used eight times, the oil absorption capability was still excellent. The sorption kinetic data for motor oil and crude oil could be well described by Lagengren pseudo-second order rate equation. The adsorption capacity of nano-polypropylene fiber for motor oil and crude oil were 54.05 g/g and 35.34 g/g, respectively. The adsorption equilibrium time for motor oil and crude oil were 43.40 min and 8.66 min, respectively. Temperature affected the oil absorption of nano-polypropylene fiber, which is related to the physical properties of oil, such as viscosity and density.