杯[4]芳烃修饰Amberlite XAD-4树脂对水介质中胆红素的吸附性能  

Adsorption Effect of Amberlite XAD-4 Resin Based Calix[4]arene on Bilirubin in Aqueous Medium

作　　者：熊振湖[1,2] 朱乐[1,2] 王月[1,2] 

机构地区：[1]天津城市建设学院天津市水质科学与技术重点实验室 [2]天津城市建设学院环境与市政工程系,天津300384

出　　处：《天津城市建设学院学报》2011年第3期196-200,211,共6页Journal of Tianjin Institute of Urban Construction

基　　金：国家自然科学基金(50878138)

摘　　要：通过偶氮化反应将杯[4]芳烃接枝到Amberlite XAD-4树脂上,采用FTIR、SEM等方法,表征了杯[4]芳烃修饰Amberlite XAD-4树脂的结构.吸附实验表明,杯[4]芳烃修饰AmberliteXAD-4树脂对胆红素的吸附容量远远大于单纯Amberlite XAD-4树脂.在温度为25,℃,胆红素浓度为20,mg/L、吸附时间为2,h的条件下,胆红素的平衡去除率在90%以上;而相同条件下的单纯Amberlite XAD-4树脂对胆红素的去除率仅为32.8%.水溶液中修饰树脂达到吸附平衡的时间为2,h左右,而且温度越高达到平衡吸附的时间越短.在近中性(pH=5～7)条件下修饰树脂对胆红素的吸附容量达到最大值,为2.1,mg/g,但随pH的降低或增大吸附容量均迅速降低.The calix[4]arene is connected to Amberlite XAD-4 resin covalently through a diazotization reaction. The structure of Amberlite XAD-4 resin based on calix[4]arene is characterized using FT-IR, SEM. The sorption results show that Amberlite XAD-4 resin based on calix[4]arene has much better removal to the bilirubin in aqueous solutions than Amberlite XAD-4 resin which are presence alone in aqueous solutions. The removal rate of bilirubin is over 90% at equilibrium, at the conditions of 25℃, the concentration of bilirubin is 20 mg/L and the adsorption time is 2 h. At the same conditions, the removal of bilirubin from Amberlite XAD-4 resin is 2.8% alone. The equilibrium time is 2h and decreases with an increase in temperature. When the aqueous solution stays near the neutral （pH = 5 - 7）, the adsorption capacity of Amberlite XAD-4 resin modified with calix[4]arene to the bilirubin reaches maximum value, which is 2.1 mg/g but the value decreases rapidly when the pH increases or decreases

关 键 词：杯【4】芳烃 AmberliteXAD-4树脂 修饰 胆红素 吸附 

分 类 号：O625[理学—有机化学]