离子液体负载型吸附剂的制备及应用研究
采用浸渍法，把离子液体负载在活性炭上，对染料废水进行吸附研究。探讨溶解质量分数、温度、投加量、吸附时间、吸附质浓度、pH值对甲基橙吸附效果的影响，并线性拟合吸附等温线。实验结果表明，选择溶解质量分数为20%的1-丁基-3-甲基咪唑六氟磷酸盐（[bmim]PF6）负载型活性炭和溶解质量分数为30%的1-丁基-3-甲基咪唑四氟硼酸盐（[bmim]BF4）负载型活性炭作为吸附剂。温度为25℃、投加量为3。6g/L、吸附时间为1h、初始浓度为30mg/L、pH=7时吸附效果较好，溶解质量分数为20%的1-丁基-3-甲基咪唑六氟磷酸盐负载型活性炭和溶解质量分数为30%的1-丁基-3-甲基咪唑四氟硼酸盐负载型活性炭对甲基橙的吸附率分别为98。8%和98。3%。87236
分别用Freundlich和Langmuir对[bmim]PF6负载型活性炭和[bmim]BF4负载型活性炭进行模拟。R²分别为0。9829、0。9979和0。9358、0。9978，更加符合Langmuir等温吸附模型。
毕业论文关键词：离子液体；负载；活性炭；吸附；甲基橙
Abstract In China, the production of dye wastewater is large, which is difficult to handle。 Dye wastewater will cause damage to environment and human health。
Ionic liquid was supported on active carbon by dipping method, and the adsorption abilities were studied。 Some factors were discussed, such as the dissolved mass fraction of ionic liquid, reaction temperature, dosage of absorbent, adsorption time, adsorbate concentration and pH of the solution, and then adsorption isotherm was fitted。Experimental results show that 20% 1-butyl-3-methylimidazolium hexafluorophosphate/activated carbon and 30% 1-butyl-3-methylimidazolium tetrafluoroborate/active carbon as the apporiate adsorbents。 When the temperature was 25℃, dosage of the absorbents was 3。6g/L, adsorption time was 1h, the initial concentration of methyl orange was 30 mg/L, and pH of the solution was 7, adsorption efficiency was higher。 The adsorption rate of 20% [bmim]PF6/activated carbon and 30% [bmim]BF4/active carbon were 98。8% and 98。3%, respectively。
Freundlich and Langmuir were used for [bmim]PF6/activated carbon and [bmim]BF4/activated carbon。 R² was 0。9829, 0。9979 and 0。9358, 0。9358, respectively。 [bmim]PF6/activated carbon and [bmim]BF4/activated carbon also more compared with Langmuir isotherm model。
Keywords: lonic liquids; load; activated carbon; adsorption; methyl orang
目 录
第一章 绪论 1
1。1 染料废水的概况 1
1。1。1 染料废水的来源及危害 1
1。1。2 染料废水的处理方法 2
1。1。3 染料废水的研究进展 2
1。2 负载型离子液体吸附材料的研究 2
1。2。1 离子液体的概述 2
1。2。2 国内外研究现状 3
1。3 实验目的与内容 4
1。3。1 实验目的 4
1。3。2 实验内容 4
第二章 实验材料和方法 5
2。1 实验仪器和试剂 5
2。1。1 实验仪器 5
2。1。1 实验试剂 5
2。2 标准曲线的绘制 5
2。3 离子液体负载活性炭的制备 7
2。3。1 活性炭的预处理 7
2。3。2 [bmim]PF6和[bmim]BF4负载型活性炭的制备 7
第三章 实验结果与讨论 8
3。1 负载前后活性炭吸附性能对比 8
3。1。1 溶解质量分数的影响 9
3。1。2 温度的影响 10
3。1。3 吸附时间的影响 10