胺化聚苯乙烯树脂的制备及吸附对硝基酚.pdf

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CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2015年第34卷第6期
研究开发
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胺化聚苯乙烯树脂的制备及吸附对硝基酚
孟启,舒斌斌,周峰,夏丰敏,孙小强
(常州大学石油化工学院,江苏常州213164)
摘要:以氩甲基化聚苯乙烯树脂(PS-CI)和氯乙酰化聚苯乙旆树脂(PS-Acy1-CI)为母体,引入三乙烯四胺(TETA)
制备两种胺化聚苯乙树脂PS-TETA与PS-Acyl-TETA。用红外光谱和表面孔径吸附仪对树脂进行表征,并用
于对硝基酚(PNP)的吸附研究。静态和动态吸附实验结果表明,两种树脂对PNP的吸附过程都可以用准二级
动力学方程来描述;液膜扩散为吸附PNP的主要控制步骤;吸附符合 Freundlich等温方程,为多分子层吸附;
吸附为自发的放热过程,属于以物理吸附为主的吸附过程;PS-TETA与PS-AyI-TETA对PNP的饱和吸附量分
别为157.87mg/mL、90.77mg/mL,穿透体积为165BV、80BV,动态脱附率为98.4%、98.9%。
关键词:三乙烯四胺;树脂;吸附;对硝基酚
中图分类号:0632.6
文献标志码:A
文章编号:1000-6613(2015)06~1714-06
DOJ:10.16085is.1000-6613.2015.06.033
Preparation of aminated polystyrene resins and its adsorption
of p-nitrophenol
MENG @i, SHU Binbin, ZHOU Feng, XIA Fengmin, SUN Xiqogiang
( School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
Abstract: Two kinds of aminated polystyrene resins, PS-TETA and PS-ACYLI-TETA were prepared with
triethylenetetramine (TETA)by reacting with chloromethyl polystyrene resin (ps-c) and
chloroacetylated polystyrene resin (PS-ACYL-TETA), respectively. The structure of resins
charactered with FTIR and BET, and the adsorptions of p-nitrophenol(PNP)were investigated
static and dynamic adsoption experimental results show that the adsorption processes for the PNP of
wo resins can be described by pseudo-second order kinetic equation. The main control steps of two
kinds of resins adsorption PNP are governed by liquid film diffusion. The adsorption data of PNP on
two kinds of resins are fitted into Freundlich isotherms, which belong to multilayer adsorption. The
adsorptions are all spontaneous exothermic processes of physical characters. The adsorption capacity
toward PNP of PS-TETA and PS-ACYL-TETA reaches 157 87mg/ml and 90.77mg/ml, respectively
The breakthrough volume of resins are 165BV and 80BV, respectively. The desorption efficiency of
two resins are 98.4% and 98.9 %, respectively
Key words: triethylenetetramine; resin; adsorption; p-nitrophenol
对硝基酚(PNP)是一种重要的有机合成原料,因而受到广泛的重视。带有含N功能团的树脂能够
也用作染料、医药及农药的中间体,同时也是有毒、有效地吸附有机酚类化合物,这主要是由于N可以
难降解的有机物,PNP生产废水主要来源于上述行
收稿日期:2014-11-17;修改稿日期:2014-11-25
业。日前,国内外处理含酚废水的方法主要有萃取基金项目:江苏省高校自然科学重大基础研究项目(08KJA4300)
法、氧化法、生化法、吸附法等4。其中吸附法能
第一作者:孟启(1965-),男,博士,教授,从事有机合成及树脂相
关研究。E-mailmengqi(@cczn,edha.cn。联系人:孙小强,教授,从事
从废水中富集分离有机污染物,实现废物资源化,
超分子化学及应用有机化学方面研究