不同Fe3O4含量磁性阴离子交换树脂对布洛芬吸附研究  

ADSORPTION OF IBUPROFEN ON MAGNETIC ANION EXCHANGE RESINS WITH DIFFERENT MAGNITITE CONTENT

作　　者：王晓燕[1,2] 张光 双陈冬 李爱民[2] WANG Xiaoyan;ZHANG Guang;SHUANG Chendong;LI Aimin(Institute o f Building Intelligence,Jiangsu Vocational Institute o f Architectural Technology Xuzhou 221116,China;School of the Environment,Nanjing University,Nanjing 210023,China)

机构地区：[1]江苏建筑职业技术学院建筑智能学院,江苏徐州221116 [2]南京大学环境学院,南京210023

出　　处：《离子交换与吸附》2019年第3期209-218,共10页Ion Exchange and Adsorption

基　　金：国家重点研发计划(项目号2016YFE0112300);江苏省高校自然科学基金(16KJB610016);国家自然科学基金重点项目(51438008);中央高校基本科研业务费资助项目

摘　　要：在初步发现Fe3O4对丙烯酸系强碱阴离子交换树脂结构和吸附性能影响的基础上,本研究发现了Fe3O4含量和树脂含水率之间的线性关系。围绕目前环境中PPCPs类污染物的去除,使用了布洛芬作为模型吸附质,考察了不同Fe3O4含量的丙烯酸系强碱阴离子交换树脂对布洛芬的吸附行为。结果表明,Fe3O4含量的增加,可显著提高该类树脂对布洛芬的吸附动力学,但对其吸附机制没有显著影响;酸性条件(pH<4)下由于布洛芬呈电中性,难以发生离子交换作用,故不利于其在该类树脂上的吸附;共存的OH-和Cl-通过竞争作用极大降低了布洛芬在该类树脂上的吸附量而共存腐殖酸(10mg/L)不会对该类树脂的吸附产生显著影响;较高含量的Fe3O4有利于丙烯酸系强碱阴离子交换树脂对布洛芬的吸附。Based on the preliminary discovery of the effect(s)of Fe3O4 on the structure and adsorption behaviors of acrylic strong base anion exchange resin,this work found a linear relationship between Fe3O4 content and the resin moisture content.The adsorption of PPCPs in the current environment was carried out,and ibuprofen was used as the model adsorbate.The adsorption behavior of ibuprofen on acrylic acid strong base anion exchange resins with different Fe3O4 content was investigated.The results show that the increase of Fe3O4 content can significantly improve the adsorption kinetics of ibuprofen in this kind of resin,but has no significant effect on its adsorption mechanism.It is difficult to cause ion exchange in acidic conditions with pH<4 because ibuprofen is electrically neutral,which decrease the adsorption amount.The coexisting OH-and Cl-greatly reduce the adsorption amount of ibuprofen on the resins through the competition effect,and the coexistence of humic acid(10 mg/L)does not significantly affect the adsorption of the resins.The results show that the higher content of Fe3O4 is beneficial to the adsorption of ibuprofen by acrylic strong base anion exchange resin.

关 键 词：磁性树脂 离子交换 四氧化三铁 吸附 布洛芬 

分 类 号：O647.3[理学—物理化学]