聚乙烯吡啶树脂对间苯二酚的吸附性能研究  

ADSORPTION OF RESORCINOL FROM AQUEOUS SOLUTION WITH POLYVINYLPYRIDINE RESIN

作　　者：陶为华[1,2] 张丽丽[1] 

机构地区：[1]江苏省滩涂生物资源与环境保护重点实验室,盐城224051 [2]盐城师范学院化学化工学院,盐城224051

出　　处：《离子交换与吸附》2015年第5期446-454,共9页Ion Exchange and Adsorption

基　　金：江苏省自然科学基金(No.BK2012673);江苏省滩涂生物资源与环境保护重点建设实验室开放课题(No.JLCBE12007);江苏省大学生实践创新训练计划项目(201510324061X)

摘　　要：通过悬浮聚合法,合成了一种聚乙烯吡啶树脂(PVP)。以大孔弱碱树脂D301和大孔吸附树脂XAD-4作为参照,研究了PVP树脂对间苯二酚的吸附性能,探讨了溶液的p H值及无机盐对树脂吸附间苯二酚的影响。结果表明,溶液pH值为6.02时,PVP树脂对间苯二酚的吸附量达到134mg/g,无机盐对PVP吸附间苯二酚几乎无影响。Freundlich等温吸附方程能够很好地拟合PVP树脂吸附间苯二酚的等温线,且间苯二酚在PVP树脂上的吸附为放热过程,能够自发进行。Polyvinylpyridine(PVP) resin was synthesized by suspension polymerization. The adsorption performance of PVP to resorcinol was studied through static experiments, comparing with two commercial adsorbents of weak basic resin D301 and macroporous resin XAD-4. The effects of p H and inorganic salt in solution on adsorption capacity of resorcinol were also discussed. The experimental results showed that the adsorption capacity of PVP for resorcinol was 134mg/g when the p H value of solution was 6.02, while the inorganic salt laid less influence on the adsorption. Adsorption data fitted the Freundlich adsorption isotherms well. The functions of thermodynamics(the adsorption free energy change ΔG, enthalpy change ΔH and entropy change ΔS) were calculated and the results, ΔG<0 and ΔH<0, showed that the adsorption of resorcinol onto PVP was a spontaneously exothermic process.

关 键 词：聚乙烯吡啶树脂 间苯二酚 吸附 热力学 无机盐 

分 类 号：O647.3[理学—物理化学]