聚乙烯吡啶树脂对富马酸的吸附性能研究  

STUDY ON THE ADSORPTION PERFORMANCE OF POLYVINYLPYRIDINE RESIN TO FUMARIC ACID FROM AQUEOUS SOLUTION

作　　者：陶为华[1] 李爱民[2] 龙超[2] 

机构地区：[1]江苏省滩涂生物资源与环境保护重点实验室,盐城师范学院化学化工学院,盐城224051 [2]南京大学污染控制与资源化研究国家重点实验室,南京210046

出　　处：《离子交换与吸附》2014年第4期315-324,共10页Ion Exchange and Adsorption

基　　金：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资助(No.JLCBE12007);江苏省自然科学基金资助(No.BK2012673)

摘　　要：通过静态吸附实验,研究了聚乙烯吡啶树脂(PVP)对富马酸的吸附性能。结果表明,该树脂对富马酸的吸附等温线同时满足Langmuir和Freundlich等温吸附方程;在无机盐存在下,与大孔强碱性树脂D204、弱碱树脂D308相比,PVP吸附富马酸的性能几乎不受无机盐的影响。D204树脂吸附富马酸是离子交换作用,D308树脂通过Lewis作用和静电作用吸附富马酸,而PVP树脂对富马酸的吸附行为是氢键所致,吸附为放热过程且能够自发进行。The adsorption characteristics of fumaric acid on polyvinylpyridine （PVP） wasdetermined through static experiments. The results showed that the adsorption date could be welldescribed by both Langmuir and Freundlich adsorption isotherm. Compared to adsorptionperformance of fumaric acid with D204 and D308, PVP was less influenced in the presence ofinorganic salt, which was attributed to different sorption mechanisms. It is believed that ionexchange interaction occurred in the adsorption of fumaric acid onto D204, and adsorption offumaric acid by D308 was attributed to both Lewis acid-base and electrostatic interactions, whilethe hydrogen bonding interaction was for adsorption of fumaric acid on PVR Adsorption offumaric acid on the three adsorbents was a spontaneously exothermic process.

关 键 词：聚乙烯吡啶树脂 富马酸 吸附 热力学 

分 类 号：O647.3[理学—物理化学]