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生物质化学工程 ›› 2018, Vol. 52 ›› Issue (6): 45-50.doi: 10.3969/j.issn.1673-5854.2018.06.007

• 研究报告 • 上一篇    下一篇

薇甘菊粉末吸附亚甲基蓝和碱性品红的性能研究

杨新周1,2, 田先娇2,3, 马艳粉2,3, 杨琦1,2   

  1. 1. 德宏师范高等专科学校 理工系, 云南 德宏 678400;
    2. 德宏师范高等专科学校 民族医药研究所, 云南 德宏 678400;
    3. 德宏师范高等专科学校 生命科学系, 云南 德宏 678400
  • 收稿日期:2017-12-14 出版日期:2018-11-30 发布日期:2018-12-12
  • 作者简介:杨新周(1986-),男,云南腾冲人,副教授,硕士,研究方向:分离分析化学;E-mail:YXZ1149@126.com。
  • 基金资助:
    云南省教育厅基金资助项目(2017ZZX277);民族药资源化学国家民族事务委员会-教育部重点实验室开放基金(MZY1602);德宏师范高等专科学校优秀中青年教师学术带头人培养项目(2016-2018)

Adsorptive Performance of Mikania micrantha Powder on Methylene Blue and Basic Fuchsin

YANG Xinzhou1,2, TIAN Xianjiao2,3, MA Yanfen2,3, YANG Qi1,2   

  1. 1. Dehong Teachers'College, Science and Engineering Department, Dehong 678400, China;
    2. The Research Institute of Ethnic Minority Medicine, Dehong Teachers'College, Dehong 678400, China;
    3. Dehong Teachers'College, Department of Life Sciences, Dehong 678400, China
  • Received:2017-12-14 Online:2018-11-30 Published:2018-12-12

摘要: 以薇甘菊为原料,经粉碎制成不同粒径的粉末吸附剂。探究其对亚甲基蓝(MB)和碱性品红(BF)的吸附性能,研究发现薇甘菊粉末吸附亚甲基蓝和碱性品红的最佳投加量分别为20和10 g/L,最佳粒径为0.3~0.45 mm,pH值为5,温度40 ℃,振荡吸附时间40 min,此条件下,薇甘菊粉末对亚甲基蓝和碱性品红的吸附量分别为4.870和9.729 mg/g。利用准一级、准二级动力学方程模拟了薇甘菊粉末吸附亚甲基蓝和碱性品红的动力学过程,结果表明:薇甘菊粉末吸附亚甲基蓝和碱性品红的过程符合准二级动力学模型。计算了吸附过程中的焓变(ΔH)、吉布斯自由能(ΔG)、熵变(ΔS)等热力学参数,薇甘菊粉末吸附亚甲基蓝和碱性品红过程中ΔG在-2.13~-1.58和-4.66~-1.63 kJ/mol之间,ΔS分别为0.034和59.25 J/(mol·K),ΔH分别为0.0099和14.75 kJ/mol,薇甘菊粉末吸附2种染料的ΔG均小于0,ΔH、ΔS均大于0,说明薇甘菊粉末吸附2种染料的过程是一个自发的趋于无序的吸热过程。

关键词: 薇甘菊粉末, 亚甲基蓝, 碱性品红, 吸附

Abstract: The powder of Mikania micrantha at different particle sizes was prepared as adsorbent. The adsorption properties of M. micrantha powder on methylene blue(MB) and basic fuchsine(BF) were studied at different conditions. It showed that the optimal adsorption conditions were as follow: the dosage of M. micrantha powder 20 and 10 g/L, pH value 5, particle size 0.3-0.45 mm, adsorption time 40 min and temperature 40 ℃. Under these conditions, the adsorption capacities of MB and BF were 4.870 and 9.729 mg/g. The pseudo-first-order, pseudo-second-order were used to simulate the kinetic process of it. The results showed that the pseudo-second kinetic equation was more suitable for describing the adsorption process. The thermodynamic parameters of Gibbs free energy(ΔG), enthalpy(ΔH) and en-tropy change(ΔS) were calculated and results were as follow: during the process of M. micrantha powder adsorption of methylene blue and basic fuchsine, the ΔG were between -2.13--1.58 kJ/mol and -4.66--1.63 kJ/mol; ΔS were 0.034 and 59.25 J/(mol·K),respectively; ΔH were 0.0099 and 14.75 kJ/mol,respectively. In the process of M. micrantha powder adsorption of methylene blue and basic fuchsine, the values of ΔG, ΔS, and ΔH were kept as ΔG<0, ΔH>0 and ΔS>0, which indicated that it was a spontaneous, disorderly and endothermic process.

Key words: Mikania micrantha powder, methylene blue, basic fuchsine, adsorption

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