A comparative study of the adsorption properties of 1-naphthylamine by XAD-4 and NDA-150 polymer resins

被引：21

作者：

Zhang, Weiming ^{[1
,2
]}

Hong, Changhong ^{[1
]}

Pan, Bingcai ^{[1
]}

Xu, Zhengwen ^{[1
]}

Zhang, Qingjian ^{[1
]}

Zhang, Qingrui ^{[1
]}

机构：

[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resources Reuse, Nanjing 210093, Peoples R China

[2] Jiangsu Engn Res Ctr Organ Pollut Control & Resou, Nanjing 210046, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2008年 / 331卷 / 03期

关键词：

Polymer resin; Adsorption; Kinetics; Thermodynamics; Dynamics;

D O I：

10.1016/j.colsurfa.2008.08.021

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A hydrophilic polymer resin (NDA-150) was synthesized, and the adsorption performance of 1-naphthylamine on NDA-150 was compared with that on the commercial hydrophobic resin (XAD-4). The kinetic adsorption of I-naphthylamine onto the two resins is limited by the successive steps of film diffusion and intraparticle diffusion, and obeys the pseudo-second-order rate model. But the adsorption rate on XAD-4 is greater than NDA-150. All the associated adsorption isotherms can be well represented by Langmuir equation, and the larger uptake and stronger affinity of NDA-150 than XAD-4 probably results from the abundant microporous structure and polar groups of NDA-150. It is obviously observed that hydrophobic XAD-4 spontaneously adsorbs 1-naphthylamine driven mainly by enthalpy change, while hydrophilic NDA-150 does driven mainly by both entropy change and enthalpy change. Dynamic breakthrough and the total adsorption capacity of NDA-150 at 293 K are 1.49 and 1.82 mmol mL(-1) resin, respectively. More than 99.5% regeneration efficiency for the resin was achieved by ethanol at 313 K. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：257 / 262

页数：6

共 23 条

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