对羟基苯甲酸修饰的吸附树脂对对硝基苯胺的吸附及其机制研究  

STUDY ON CAPACITY OF ADSORBING P-NITROANILINE BY P-HYDROXY BENZONIC ACID MODIFIED RESIN AND ITS ADSORBING MECHANISM

作　　者：郑凯[1] 韩玉娟[2] 韩玉华[1] 刘廷凤[1] 丁克强[1] 

机构地区：[1]南京工程学院环境工程系,南京211167 [2]淮安市广播电视大学,江苏淮安223005

出　　处：《环境工程》2009年第S1期523-526,共4页Environmental Engineering

摘　　要：以对硝基苯胺作吸附质,对羟基苯甲酸修饰的吸附树脂CS-6作为吸附剂,超高交联吸附剂JX-101作为参照物,研究JX-101、CS-6对对硝基苯胺的吸附能力。CS-6、JX-101对对硝基苯胺的吸附等温线表明:CS-6对对硝基苯胺的吸附能力强于JX-101。比较了CS-6、JX-101吸附剂对正己烷溶液中的对硝基苯胺吸附前后红外光谱。结果表明:CS-6吸附剂在吸附对硝基苯胺过程中,吸附前后树脂的红外光谱的特征吸收峰发生明显的漂移,这是由于对羟基苯甲酸与对硝基苯胺分子之间发生酸碱络合作用的结果。In this paper,polystyrene-based adsorbents chemically modified p-hydroxybenzonic acid(denoted CS-6)was synthesized for enhanced removal of p-nitroaniline from aqueous solution.A commercial styrene-divinylbenzene hyper-cross-linked polymeric sorbent JX-101 was selected as the reference to evaluate the performance of CS-6.The p-nitroaniline stronger capacity onto CS-6 than that onto JX-101 was observed by comparing with their isotherm at same situation.Comparing with the infrared spectrum of CS-6 before and after adsorbing p-nitroaniline in hexane,the results indicated that wave numbers shifted and shape of wave change.This was mainly attributed to the specific interaction by formation of acid-base complex.

关 键 词：对羟基苯甲酸 吸附等温线 红外光谱 

分 类 号：X703[环境科学与工程—环境工程]