在线阅读 --自然科学版 2019年6期《榛子壳活性炭的制备及其对苯酚溶液吸附性能的研究》
榛子壳活性炭的制备及其对苯酚溶液吸附性能的研究--[在线阅读]
薛峰峰1, 赵凯2, 秦智乔2, 赵子楠3
1. 河北水利电力学院 土木工程学院, 河北 沧州 061001;
2. 河北凯盛医药科技有限公司, 河北 石家庄 050035;
3. 北京中医药大学 中药学院, 北京 100029
起止页码: 510--517页
DOI: 10.13763/j.cnki.jhebnu.nse.2019.06.010
摘要
以榛子壳为原料、氯化锌为活化剂制备活性炭,并以苯酚为被吸附质,探究活性炭对苯酚的吸附性能.通过设计3因素3水平的正交实验,获得了最佳工艺条件.研究了在不同的吸附时间、pH值、温度等条件下活性炭对苯酚的吸附效果,并对吸附过程进行了动力学和热力学研究.结果表明:活性炭对苯酚的吸附过程符合伪二级吸附动力学方程,低温和酸性条件下更有利于吸附;吸附过程符合Langmuir等温吸附模型,ΔG<0和ΔH<0,表明该吸附过程是自发的放热过程.

Preparation of Activated Carbon from Hazelnut Shell and Its Adsorption Property to Phenol Solution
XUE Fengfeng1, ZHAO Kai2, QIN Zhiqiao2, ZHAO Zinan3
1. College of Civil Engineering, Hebei University of Water Resources and Electric Engineering, Hebei Cangzhou 061001, China;
2. Hebei Kingsci Pharmaceutical Technology Company Limited, Hebei Shijiazhuang 050053, China;
3. School of Traditional Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, China
Abstract:
This study consists of the producing of activated carbon from hazelnut shell by chemical activation and its behavior of phenol removal from aqueous solution.ZnCl2 was used as chemical activation agent.The optimum conditions were obtained by designing the orthogonal experiment of 3 factors and 3 levels.The adsorption tests of hazelnut shell activated carbon for phenol under different adsorption time,pH,temperature and other conditions were studied.The adsorption process was also studied by kinetic and thermodynamic methods.The rates of adsorption followed the Pseudo-second-order kinetics model,the low temperature and acidic conditions were conducive to the adsorption process.The negative adsorption isotherms fitted to the Langmuir-type,indicating the adsorption process was exothermic and occurred automatically.

收稿日期: 2019-04-29
基金项目: 河北省重点研发计划项目(17273609)

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