苯乙烯-丙烯腈交联树脂微球的制备及对Pb^(2+)的吸附性能研究  

Preparation and the Adsorption Performance for Pb^(2+)of St-AN Crosslinked Resin Microspheres

作　　者：邸宏伟[1,2] 范超 何花 董俊玲 张楠 王雅婷 Di Hongwei;Fan Chao;He Hua;Dong Junling;Zhang Nan;Wang Yating(College of Chemistry and Chemical Engineering,Ningxia Normal University,Guyuan 756000,China;Engineering and Technology Research Center of Liupanshan Resources,Ningxia Normal University,Guyuan 756000,China)

机构地区：[1]宁夏师范学院化学化工学院,宁夏固原756000 [2]宁夏师范学院六盘山资源工程技术研究中心,宁夏固原756000

出　　处：《山东化工》2023年第20期19-20,23,共3页Shandong Chemical Industry

基　　金：宁夏自然科学基金(2022AAC03306);宁夏师范学院化学化工学院科学研究项目(HGZD21-14)。

摘　　要：为了解决含重金属离子的工业废水对环境造成的污染问题,可吸附重金属离子的高分子交联树脂成为研究热点。以过氧化二苯甲酰(BPO)为引发剂、二乙烯基苯为交联剂、苯乙烯(St)、丙烯腈(AN)为聚合单体,通过溶液聚合制得苯乙烯-丙烯腈(St-AN)交联树脂。通过扫描电镜和红外光谱测试研究此交联树脂的形貌和化学结构。研究结果表明,成功制备了苯乙烯-丙烯腈(St-AN)交联树脂,此交联树脂呈小球状。以铅离子为研究对象,研究该交联树脂微球在不同的pH值下对铅离子的吸附影响以及吸附率随时间的变化。结果表明该交联树脂微球对铅离子吸附能力强,2 h内吸附率达到90%;交联树脂微球对铅离子吸附受酸度影响,pH值5.5附近,吸附能力最佳,可作为金属螯合剂以及絮凝剂有效处理水中的重金属离子污染物。In order to solve the environmental pollution problem caused by industrial wastewater containing heavy metal ions,polymer cross-linked resins that can adsorb heavy metal ions have become a research hotspot.This article uses benzoyl peroxide(BPO)as the initiator,divinylbenzene as the crosslinking agent,and styrene(St)and acrylonitrile(AN)as polymerization monomers to prepare styrene acrylonitrile(St AN)cross-linked resin through solution polymerization.The morphology and chemical structure of this cross-linked resin were studied through scanning electron microscopy and infrared spectroscopy testing.The research results indicate that a styrene acrylonitrile(St AN)cross-linked resin has been successfully prepared,which exhibits a small spherical shape.Taking lead ions as the research object,the adsorption effect of the cross-linked resin microspheres on lead ions at different pH values and the variation of adsorption rate with time were studied.The results show that the cross-linked resin microspheres have strong adsorption capacity for lead ions,with an adsorption rate of 90% within 2 h;The adsorption of lead ions on crosslinked resin microspheres is affected by acidity,with the best adsorption capacity around pH 5.5.It can be used as a metal chelating agent and a flocculant to effectively treat heavy metal ion pollutants in water.

关 键 词：苯乙烯-丙烯腈交联树脂微球 重金属离子 螯合反应 吸附 

分 类 号：TQ31[化学工程—高聚物工业]