Hydrochloric acid (HCl) treatment on nettle fibres has been performed to improve the oil absorbency. Box-Behnken experimental design is used to study the influence of parameters, such as treatment time, treatment temperature and concentration on oil absorbency. It is observed that the maximum oil absorbency of 15.39 g/g of nettle fibres is achieved at 2 % of HCl concentration, 75°C of treatment temperature and 60 min of treatment time. Scanning electron microscopic study reveals that the raw nettle fibre surface exhibits waxy and protruding parts, and on HCl treatment the surface becomes rougher. The influence of other parameters such as stirring speed, environmental temperature and reusability on oil absorbency is also studied. Oil sorbed nettle fibres are also subjected to soil burial tests and burning tests. In conclusion, the raw nettle fibres only show an oil absorbency of 9.25 (g/g), whereas HCl treated nettle fibres show a maximum oil absorbency of 15.39 g/g.

中文翻译：

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盐酸处理过的针刺纤维对吸油性的影响

已对荨麻纤维进行了盐酸（HCl）处理，以提高吸油性。Box-Behnken实验设计用于研究参数如处理时间，处理温度和浓度对吸油性的影响。可以看出，在2％的HCl浓度，75°C的处理温度和60分钟的处理时间下，荨麻纤维的最大吸油量为15.39 g / g。扫描电子显微镜研究发现，荨麻纤维的原始表面显示出蜡状和突出的部分，而在HCl处理下，该表面变得更粗糙。还研究了搅拌速度，环境温度和可重复使用性等其他参数对吸油性的影响。吸油的荨麻纤维也要经过土壤掩埋测试和燃烧测试。结论，