| 一种亲水的酚羟基修饰聚苯乙烯树脂对酚类化合物的吸附热力学 |
| |
| 引用本文： | 李爱民,张全兴,刘福强,费正皓,王学江,陈金龙.一种亲水的酚羟基修饰聚苯乙烯树脂对酚类化合物的吸附热力学[J].离子交换与吸附,2001,17(6):515-525. |
| |
| 作者姓名： | 李爱民 张全兴 刘福强 费正皓 王学江 陈金龙 |
| |
| 作者单位： | 1. 南京大学环境学院,
2. 盐城师院应用化学与环境工程研究所,盐城师院化学系, |
| |
| 基金项目： | 江苏省科技厅(BK 2000016) |
| |
| 摘 要： | 在283-323K和研究的浓度范围内，苯酚、对甲苯酚、对氯苯酚和对硝基苯酚在亲水性的酚羟基修饰聚苯乙烯树脂（AM-1）与大孔吸附树脂（Amberlite XAD-4)上平衡吸附数据符合Freundlich吸附等温方程。酚类化合物在AM-1上的吸附容量比在Amberlite XAD-4上的吸附容量增加20%以上，这主要得益于AM-1表面的酚羟基入树脂的微孔结构。在较稀的溶液中AM-1对苯酚的吸附量比AmberliteXAD-4对苯酚的吸附量增加60%，表明AM-1对苯酚有特殊的选择性。Freundlich吸附等温线、相对吸附容量以及等量吸附焓表明，四种酚在两种树脂上的吸附是物理吸附过程。对酚类化合物被两种树脂吸附的吸附焓、自由能、吸附熵也作了测试，并对吸附行为作了合理的解释。
|
| 关 键 词： | 大孔聚合物吸附剂 酚类化合物 吸附热力学 有机化学工业 含酚废水 酚羟基修饰聚苯乙烯树脂 废水处理 吸附法 |
| 文章编号： | 1001-5493(2001)06-0515-11 |
| 修稿时间： | 2001年6月22日 |
THERMODYNAMIC STUDY OF ADSORPTION OF PHENOLIC COMPOUNDS ON A PHENOL HYDROXYL MODIFIED POLYSTYRENE |
| |
| LI Aimin, ZHANG Quanxing LIU Fuqiang FEI Zhenghao WANG Xuejiang CHEN Jinlong State Key Laboratory of Pollution Control and Sesources Reuse School of the Environment,Nanjing University,Nanjing ,P. R. China Institute of Applied Che.THERMODYNAMIC STUDY OF ADSORPTION OF PHENOLIC COMPOUNDS ON A PHENOL HYDROXYL MODIFIED POLYSTYRENE[J].Ion Exchange and Adsorption,2001,17(6):515-525. |
| |
| Authors: | LI Aimin ZHANG Quanxing LIU Fuqiang FEI Zhenghao WANG Xuejiang CHEN Jinlong State Key Laboratory of Pollution Control and Sesources Reuse School of the Environment Nanjing University Nanjing P R China Institute of Applied Che |
| |
| Institution: | LI Aimin1,2 ZHANG Quanxing1 LIU Fuqiang2 FEI Zhenghao2 WANG Xuejiang1 CHEN Jinlong1 1 State Key Laboratory of Pollution Control and Sesources Reuse School of the Environment,Nanjing University,Nanjing 210093,P. R. China 2 Institute of Applied Che |
| |
| Abstract: | Equilibrium data for the adsorption of phenolic compounds, phenol, p-cresol, p-chlorophenol and p-nitrophenol, from aqueous solutions by Amberlite XAD-4 polymeric adsorbent and a water-compatible phenolic hydroxyl modified polystyrene adsorbent (AM-1) within temperature range of 283-323K had been obtained and were correlated with a Freundlich-type of isotherm equation. The equilibrium constants KF and n were obtained. The capacities of equilibrium adsorption of AM-1for all four phenolic compounds increased around 20% over that of Amberlite XAD-4, which may be contributed to phenol hydroxyl group on the surface and the unusual pore distribution. At their dilute solution, the equilibrium adsorption capacities of AM-1for phenol increased about 62% over that of Amberlite XAD-4, suggesting an advantage of AM-1 over Amberlite XAD-4 in the collection of phenol. Estimations of the isosteric enthalpy of adsorption, free energy, and entropy of adsorption are reported and, the adsorption behaviors are reasonably interpreted. |
| |
| Keywords: | Polymeric adsorbent Phenolic compound Equilibrium adsorption Adsorption thermodynamic |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
