偏苯三酸酐修饰的树脂对邻苯二甲酸的吸附研究  

STUDY ON THE ADSORPTION OF PHTHALIC ACID WITH THE ADSORPTION RESIN MODIFIED BY TRIMELLITIC ANHYDRIDE

作　　者：刘总堂[1] 孙玉凤[2] 杨珊珊[2] 费正皓[1] 王京平[2] 邢蓉[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,盐城224051 [2]盐城师范学院应用化学与环境工程研究所,盐城224051

出　　处：《离子交换与吸附》2013年第1期51-57,共7页Ion Exchange and Adsorption

基　　金：江苏省"六大人才高峰"项目;国家自然科学基金(No.21143009);江苏省教育厅重大项目(12KJA180009);江苏省滩涂生物资源与环境保护重点建设实验室(No.JLCBE11009);江苏省新型环保重点实验室开放课题(No.AE201009);盐城市农业科技指导性计划项目(No.YKN2011005)资助

摘　　要：用颗粒活性炭作比较,通过等温吸附实验和吸附动力学实验研究了偏苯三酸酐修饰的吸附树脂对邻苯二甲酸的吸附性能及吸附机理。结果表明,偏苯三酸酐修饰的树脂对邻苯二甲酸具有良好的吸附效果,吸附量随着温度的升高而下降。Freundlich吸附等温方程很好地拟合邻苯二甲酸在偏苯三酸酐修饰的树脂上的吸附行为。吸附焓变结果表明,吸附过程是以放热的物理吸附为主,且焓变的绝对值均随着吸附量的增大而减小。邻苯二甲酸在偏苯三酸酐修饰的树脂上的吸附过程符合准一级动力学方程,颗粒内扩散是吸附过程的主要控制步骤。Adsorption properties and mechanism of phthalic acid onto trimellitic anhydride modified resin （TMA） were studied through the static adsorption and dynamics experimental compared to granular activated carbon （GAC）. The results showed that the TMA resin and GAC had good adsorption capabilities for phthalic acid. The adsorption capacities of the two adsorbent decreased with the sorption temperature increased. Freundlich adsorption isotherm equation could fit the adsorption isotherm perfectly, The data of enthalpy indicated that the adsorption process was a physical adsorption, and the value of enthalpy decreased when the Q~ increased. Pseudo-first order kinetic equation could fit the adsorption process perfectly, which meant inner diffusion of the particles was the major controlling step of adsorption process.

关 键 词：偏苯三酸酐 化学修饰 吸附树脂 邻苯二甲酸 吸附 

分 类 号：O647.3[理学—物理化学]