| 基于微波法制备玉米秸秆活性炭及对孔雀石绿的吸附 |
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| 引用本文： | 李哲,焦春霞,张钢强,高楼军. 基于微波法制备玉米秸秆活性炭及对孔雀石绿的吸附[J]. 延安大学学报(自然科学版), 2019, 0(1): 52-55 |
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| 作者姓名： | 李哲 焦春霞 张钢强 高楼军 |
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| 作者单位： | 延安大学化学与化工学院陕西省化学反应工程重点实验室 |
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| 基金项目： | 陕西省教育厅重点实验室资助项目(16JS121;18JS115);陕西省重点实验室后补助项目(2013SZS20-Z01);延安大学托举项目(YDT2016-05) |
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| 摘 要： | 通过氯化锌活化——微波法制备了玉米秸秆活性炭,并研究了活性炭对孔雀石绿的吸附性能,考察了活性炭对孔雀石绿的最佳吸附条件、吸附热力学以及动力学特征。结果表明,在实验温度下,活性炭对孔雀石绿的吸附平衡符合Langmuir等温线模型,其动力学行为更好的符合Lagergren准二级动力学模型,吸附过程的表观活化能E_a=119. 52 kJ/mol。热力学研究表明该吸附过程为自发的、吸热的熵增过程。
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| 关 键 词： | 玉米秸秆 微波法 活性炭 孔雀石绿 吸附 |
Preparetion Activated Carbon from Corn Straw by Microwave Method and its Effects on the Adsorption of Malachite Green |
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| LI ZHE,JIAO Chun-xia,ZHANG Gang-qiang,GAO Lou-jun. Preparetion Activated Carbon from Corn Straw by Microwave Method and its Effects on the Adsorption of Malachite Green[J]. Journal of Yan'an University(Natural Science Edition), 2019, 0(1): 52-55 |
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| Authors: | LI ZHE JIAO Chun-xia ZHANG Gang-qiang GAO Lou-jun |
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| Affiliation: | (Key Laboratory of Chemical Reaction Engineering of Shaanxi Province,School of Chemistryand Chemical Engineering,Yan′an University,Yan′an 716000,China) |
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| Abstract: | Activated carbon was prepared from corn straw with ZnCl2 as an activation agent under microwave radiation,and its adsorption properties of malachite green were also studied.The optimum adsorption conditions,adsorption thermodynamics and kinetic characteristics of malachite green by activated carbon were investigated.The results indicate that the adsorption equilibrium of activated carbon on malachite green conforms to the Langmuir isotherm model at the experimental temperature,the adsorption kinetics of malachite green on activated carbon can be well described by the Pseudo-second-order model and apparent activation energy E a=119.52kJ/mol of adsorption process.Thermodynamic studies show that the adsorption process is a process of spontaneous and endothermic entropy increment. |
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| Keywords: | corn straw microwave method activated carbon malachite green adsorption |
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