摘要
分别用乙酰苯胺、水杨酸化学修饰氯甲基化低交联大孔苯乙烯-二乙烯苯聚合物,合成超高交联吸附树脂FZH03、FZH04。与Amberlite XAD-4对照,研究了这两种树脂在不同温度下对水溶液中对氯苯酚的静态吸附和动态吸附行为。结果表明,两种树脂的等温吸附数据可被Langmuir和Freundlich等温吸附方程很好地进行拟合,对对氯苯酚的吸附量明显高于XAD-4,是焓推动的吸附过程,对对氯苯酚吸附动力学均符合一级动力学方程,有两个独立的动力学过程,颗粒内扩散是该吸附过程的速控步骤。
Two adsorption resins （FZH03 and FZH04） were synthesized by modifying chloromethylatecl low- crosslinked polystyrene-divinylbenzene with acetanilide and salicylic acid respectively. The adsorption behavior of p- chlorophenol on FZH03 and FZH04 was investigated at different temperature using the commercial Amberlite XAD-4 as a reference. The results indicate that isothermal adsorption data is well fitted into Langmuir and Freundlich isotherm equations. The capacities of equilibrium ad^rption for p-chlorophenol on FZH03 and FZH04 resins from aqueous solution were higher than those on Amberlite XAD-4 within the temperature range 288K--318K, and the admrption mainly was a physical admrption process promoted by enthalpy. The adsorption dynamics of p- chlorophenol on FZH03 and FZH04 were fitted into first-order dynamics equation, including two independent dynamics process and intraparticle diffusion was the rate-deter mining step in the adsorption process.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2012年第7期27-30,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(21077087)
江苏省“333高层次人才培养工程”和“青蓝工程”资助
江苏省教育厅项目(09KJB150013和10KJD150006)
江苏省滩涂生物资源与环境保护重点建设实验室开放基金资助课题(JLCBE06020)
关键词
吸附树脂
化学修饰
对氯苯酚
吸附热力学
吸附动力学
adsorption resin
chemical modification
p-chlorophenol
adsorption themodynamics
adsorption dynamics
