高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (11): 2095-2098.

• 研究论文 • 上一篇    下一篇

2-噻吩乙酸在三种不同树脂上的吸附热力学和动力学研究

魏瑞霞1,2, 陈金龙1, 陈连龙1, 费正皓1, 李爱民1, 张全兴1   

  1. 1. 污染控制与资源化国家重点实验室, 南京大学环境工程系, 南京210093;
    2. 河北理工大学资源与环境学院, 唐山063009
  • 收稿日期:2003-10-09 出版日期:2004-11-24 发布日期:2004-11-24
  • 基金资助:

    国家自然科学基金(批准号:20274017)资助

Adsorption Thermodynamics and Kinetics of 2-Thiopheneacetic Acid on Three Types of Resin

WEI Rui-Xia1,2, CHEN Jin-Long1, CHEN Lian-Long1, FEI Zheng-Hao1, LI Ai-Min1, ZHANG Quan-Xing1   

  1. 1. State Key Laboratory of Pollution Control and Resources Reuse, Department of Environmental Engineering, Nanjing University, Nanjing 210093, China;
    2. Resource and Environmental College, Hebei Polytechnic University, Tangshan 063009, China
  • Received:2003-10-09 Online:2004-11-24 Published:2004-11-24

摘要: 通过静态吸附实验,研究了XAD-4,NDA-100和ND-90吸附树脂对水溶液中2-噻吩乙酸的吸附热力学及动力学特性,结果表明,2-噻吩乙酸在XAD-4树脂上是单层吸附,符合Langmuir等温吸附方程,吸附过程符合准一级动力学吸附方程.2-噻吩乙酸在NDA-100和ND-90树脂上的吸附也能用Langmuir等温吸附方程表示,但并不只是单层吸附,而主要是由毛细管凝聚和微孔填充作用造成的吸附,吸附过程可分为大孔和中孔区的吸附以及微孔区的吸附两个阶段,两个阶段都符合准一级动力学吸附方程.

关键词: 2-噻吩乙酸, 吸附, 树脂, 热力学, 动力学

Abstract: The adsorption thermodynamics and kinetics of 2-thiopheneacetic acid by XAD-4, NDA-100 and ND-90 resins were carried out through static experiments. The results showed that the adsorption of 2-thiopheneacetic acid on XAD-4 resin is Langmuir monolayer, and the adsorption rate appears to be the first order kinetics. The adsorption data of 2-thiopheneacetic acid on NDA-100 and ND-90 resin were also discribed well by the Langmuir isotherm, which is caused by the capillary condensation and the volume filling of micropores besides monolayer adsorption. The adsorption of 2-thiopheneacetic acid on NDA-100 and ND-90 resin passed through two processes: macropores and mespores area and micropores area. And the adsorption rates of the two processes are the first order kinetics.

Key words: Thiopheneacetic acid, Adsorption, Resin, Thermodynamics, Kinetics

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