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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (15): 1515-1520. 上一篇    下一篇

研究论文

化学修饰的吸附树脂对2,4,6-三氯苯酚的吸附研究

费正皓*,1, 刘总堂1, 刘福强2, 李爱民1,2, 陈金龙2, 张全兴2   

  1. (1盐城师范学院 江苏省滩涂生物资源与环境保护重点建设实验室 盐城 224002)
    (2南京大学污染控制与资源化国家重点实验室 南京 210093)
  • 投稿日期:2006-04-03 修回日期:2007-01-16 发布日期:2007-08-14
  • 通讯作者: 费正皓

Study on the Adsorption of 2,4,6-Trichlorophenol with Chemically Modified Adsorption Resins

FEI Zheng-Hao*,1; LIU Zong-Tang1; LIU Fu-Qiang2; LI Ai-Min1,2; CHEN Jin-Long2; ZHANG Quan-Xing2   

  1. (1 Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng Teachers' College, Yancheng 224002)
    (2 State Key Laboratory of Pollution Control and Resources Reuse, Nanjing University, Nanjing 210093)
  • Received:2006-04-03 Revised:2007-01-16 Published:2007-08-14
  • Contact: FEI Zheng-Hao

PDF

903

被引次数

41

合成了用邻羧基苯甲酰基或苯甲酰基修饰的新型聚苯乙烯-二乙烯苯吸附树脂ZH-01, ZH-02和ZH-03, 利用瓶点法研究了它们和Amberlite XAD-4对288～318 K下水溶液中2,4,6-三氯苯酚的静态吸附和静态脱附特征以证实吸附质与吸附剂之间存在化学吸附, 并利用半经验分子轨道法(AM1)计算的几种吸附剂和2,4,6-三氯苯酚的前线轨道近似能级进行了解释. 结果表明: 经邻羧基苯甲酰基或苯甲酰基化学修饰后的树脂ZH-01, ZH-02和ZH-03对水溶液中2,4,6-三氯苯酚的吸附过程在合适温度时会使酚羟基和吸附剂表面的羰基发生作用, 对吸附剂进行适当的化学修饰后, 对2,4,6-三氯苯酚的穿透吸附容量均为Amberlite XAD-4树脂的150%, 饱和吸附容量是Amberlite XAD-4树脂的114％～128％.

关键词: 吸附树脂, 2,4,6-三氯苯酚, 化学吸附, 化学修饰

New poly(styrene-divinylbenzene) adsorption resins modified with 2-carboxylbenzoyl (ZH-01) or benzoyl (ZH-02 and ZH-03) group were prepared. The static adsorption and static desorption characteristics for 2,4,6-trichlorophenol in aqueous solution onto above adsorption resins and Amberlite XAD-4 in the temperature range of 288～318 K were studied with bottle point method to confirm the existence of chemisorption between adsorbate and adsorbent, which was interpreted by the approximate orbital energy level of several adsorbents and 2,4,6-trichlorophenol calculated with the semiempirical molecular orbital method AM1. The result shows that the interaction between hydroxyl group in 2,4,6-trichlorophenol and 2-carboxylbenzoyl or benzoyl group on the modified adsorbents will exist in the adsorption system of 2,4,6-trichlorophenol in aqueous solutions with ZH-01, ZH-02 or ZH-03 at the proper temperature. The breakthrough and total adsorption capacities of 2,4,6-trichlorophenol in aqueous solutions with the modified adsorption resins increased to 150% and 114%～128% compared to that with Amberlite XAD-4.

Key words: adsorption resin, 2,4,6-trichlorophenol, chemisorption, chemical modification