ZH-01吸附树脂对苯甲酸的吸附性能研究  

The Adsorption of Benzoic Acid on High-crosslinked Resin

作　　者：王京平[1,2] 陈建[1,2] 费正皓[1,2] 王兴隆[1,2] 孙玉凤[1,2] 陶为华[1,2] 徐融[1,2] 

机构地区：[1]江苏省滩涂生物资源与环境保护重点建设实验室,江苏盐城224002 [2]盐城师范学院应用化学与环境工程研究所,江苏盐城224002

出　　处：《化学世界》2011年第10期580-583,598,共5页Chemical World

基　　金：国家自然基金资助项目(21077087);江苏省滩涂生物资源与环境保护建设重点实验室开放项目:JLCBE06001

摘　　要：比较了超高交联吸附树脂ZH-01与大孔吸附树脂AmberliteXAD-4对苯甲酸的静态吸附和动态吸附行为,并探讨了温度和起始浓度对平衡时间和吸附速率的影响。从静态平衡吸附行为及其热力学性质讨论吸附机理,动态吸附进一步验证聚苯乙烯超高交联吸附树脂对苯甲酸的吸附能力比Amberlite XAD-4强。结果表明：在288~318K和研究的浓度范围内,ZH-01、XAD-4对苯甲酸的吸附平衡数据均符合Freundlich吸附等温方程和Langmuir方程。吸附为放热过程,适当降低温度有利于吸附,并计算了苯甲酸在ZH-01、XAD-4树脂上的吸附焓变、自由能变,对吸附行为进行了合理的解释。The static and dynamic adsorption behavior of benzoic acid on high-crosslinked polystyrene resin ZH-01 and macroporous resin Amberlite XAD-4 were compared.The effect of temperature and initial concentration on equilibrium time and adsorption rate was stadied.From the static equilibrium adsorption behavior and the thermodynamic properties the adsorption mechanism was discussed.The dynamic adsorption data showed that the adsorption of benzoic acid on the high-crosslinked polystyrene resin was stronger than that on Amberlite XAD-4.288 ~ 318K and in the concentration scope of the study,the adsorption equilibrium of benzoic acid on ZH-01 and XAD-4 complied with the Freundlich and Langmuir adsorption isotherm equations.The adsorption process is exothermic,so lower temperature is in favor of the adsorption.The enthalpy and free energy changes in adsorption were calculated,and a reasonable explanation was given.

关 键 词：超高交联树脂 苯甲酸 吸附热力学 吸附动力学 物理吸附 

分 类 号：R446.11[医药卫生—诊断学]