| Adsorption of catechol from aqueous solution by aminated hypercrosslinked polymers |
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| 作者姓名： | SUN Yue LI Xiao-tao XU Chao CHEN Jin-long LI Ai-min ZHANG Quan-xing |
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| 作者单位： | StateKeyLaboratoryofPollutionControlandResourcesReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093,China. |
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| 基金项目： | TheNationalNaturalScienceFoundationofChina(No .2 0 2 740 1 7) |
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| 摘 要： | Adsorption of catechol from aqueous solution with the hypercrosslinked polymeric adsorbent NDA-100 and its derivatives AH-1,AH-2 and AH-3 aminated by dimethylamine, the commercial resin Amberlite XAD-4 and weakly basic anion exchanger resin D301 was compared. It was found that the aminated hypercrosslinked resins had the highest adsorption capacities among the tested polymers. The empirical Freundlich equation was successfully employed to describe the adsorption process. Specific surface area and micropore structure of the adsorbent, in company with tertiary amino groups on matrix affected the adsorption performance towards catechol. In addition, thermodynamic study was carried out to interpret the adsorption mechanism. Kinetic study testified that the tertiary amino groups on the polymer matrix could decrease the adsorption rate and increase the adsorption apparent activation energy.
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| 关 键 词： | 苯磷二酚 水溶液 氨化超交联聚合物 吸附剂 废水处理 热力学 |
Adsorption of catechol from aqueous solution by aminated hypercrosslinked polymers |
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| SUN Yue,LI Xiao-tao,XU Chao,CHEN Jin-long,LI Ai-min,ZHANG Quan-xing.Adsorption of catechol from aqueous solution by aminated hypercrosslinked polymers[J].Journal of Environmental Sciences,2005,17(4):584-588. |
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| Authors: | SUN Yue LI Xiao-tao XU Chao CHEN Jin-long LI Ai-min and ZHANG Quan-xing |
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| Institution: | State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, China |
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| Abstract: | Adsorption of catechol from aqueous solution with the hypercrosslinked polymeric adsorbent NDA-100 and its derivatives AH-1, AH-2 and AH-3 aminated by dimethylamine, the commercial resin Amberlite XAD-4 and weakly basic anion exchanger resin D301 was compared. It was found that the aminated hypercrosslinked resins had the highest adsorption capacities among the tested polymers. The empirical Freundlich equation was successfully employed to describe the adsorption process. Specific surface area and micropore structure of the adsorbent, in company with tertiary amino groups on matrix affected the adsorption performance towards catechol. In addition, thermodynamic study was carried out to interpret the adsorption mechanism. Kinetic study testified that the tertiary amino groups on the polymer matrix could decrease the adsorption rate and increase the adsorption apparent activation energy. |
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| Keywords: | hypercrosslinked polymer catechol adsorption thermodynamics kinetics |
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