摘要
通过对XDA-200大孔聚苯乙烯树脂进行哌嗪修饰制备了一种亲水性的NDA-201树脂,采用静态吸附方法考察了NDA-201对水溶液中诺氟沙星的静态吸附和脱附特征。结果表明,NDA-201树脂对诺氟沙星具有良好的吸附性能,在研究的浓度范围内,Langmuir和Freundlich等温吸附方程均能很好地拟合吸附平衡数据,吸附为放热的物理过程,吸附动力学符合Lagergren准二级速率方程,吸附速率受颗粒内扩散和液膜扩散双重作用。
By post-crosslinking reaction with piperazine,new poly（styrene divinylbenzene） hypercrosslinked adsorption resins of NDA-201 were successfully prepared by chemical modification of macroporous resin of XDA-200.The static adsorption and desorption characteristics for norfloxacin in aqueous solution onto adsorption resins were studied.A series of sorption experiments show that NDA-201 resin had high adsorption capacities for norfloxacin.Equilibrium adsorption data fitted both Langmuir and Freundlich isotherms in the studied concentration range.The adsorption was exothermic and basically of physical character.The kinetic analysis shows that the adsorption reaction could be approximated by a Lagergren pseudo-second-order-rate equation for which intraparticle diffusion was the essential rate-controlling step.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2013年第7期771-775,783,共6页
Fine Chemicals
基金
江苏省科技支撑计划项目(BE2009637)
江苏省常州市国际科技合作资助项目(CZ20090005)~~
关键词
诺氟沙星
大孔吸附树脂
化学修饰
物理吸附
水处理技术与环境保护
norfloxacin
macroporous resin
chemical modification
physisorption
water treatment technology and environmental protection
