| 3种树脂对水溶液中单宁吸附性能的比较研究 |
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| 引用本文： | 孙越,童建,李爱民,张全兴. 3种树脂对水溶液中单宁吸附性能的比较研究[J]. 离子交换与吸附, 2007, 23(6): 512-518 |
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| 作者姓名： | 孙越 童建 李爱民 张全兴 |
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| 作者单位： | 东南大学土木工程学院,南京,210096;江苏省水文水资源勘测局,南京,210029;污染控制与资源化研究国家重点实验室,南京大学环境学院,南京,210093 |
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| 摘 要： | 通过静态吸附实验,研究了大孔吸附树脂NG-8、胺基化大孔吸附树脂NG-9和胺基化超高交联大孔吸附树脂NDA-99对水溶液中单宁的吸附行为特性.结果表明,3种树脂对单宁的吸附均符合Langmuir等温吸附方程,树脂对单宁的吸附容量NG-9＞NG-8＞NDA-99;吸附过程符合准二级动力学方程,吸附速率常数NG-8＞NG-9＞NDA-99.树脂的孔结构与表面化学性质是影响树脂吸附性能的重要因素.
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| 关 键 词： | 吸附树脂 吸附 单宁 热力学 动力学 |
| 文章编号： | 1001-5493(2007)06-0512-07 |
| 修稿时间： | 2007-01-15 |
STUDY ON ADSORPTION BEHAVIORS OF TANNIN FROM AQUEOUS SOLUTION ON THREE POLYMERIC RESINS |
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| SUN Yue,TONG Jian,LI Aimin,ZHANG Quanxing. STUDY ON ADSORPTION BEHAVIORS OF TANNIN FROM AQUEOUS SOLUTION ON THREE POLYMERIC RESINS[J]. Ion Exchange and Adsorption, 2007, 23(6): 512-518 |
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| Authors: | SUN Yue TONG Jian LI Aimin ZHANG Quanxing |
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| Abstract: | Adsorption behavior of tannin from aqueous solution by the macroporous polymeric resin NG-8,aminated hypercrosslinked polymeric resin NDA-99 and aminated macroporous polymeric resin NG-9 was studied through static experiments.The empirical Langmuir equation was successfully employed to describe the adsorption process and the adsorption capacities towards tannin increase in the following order:NG-9 > NG-8 > AH-1.The adsorption rate implied a pseudo-second order kinetic mechanism and the value of rate constant of the tested resins in the following order:NG-8 > NG-9 > NDA-99.The results showed that the pore size distribution and the tertiary amino group on the polymer played a significant role in tannin adsorption performance. |
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| Keywords: | Polymeric resin Adsorption Tannin Thermodynamics Kinetics |
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