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环境化学  2015 

三种不同树脂对硫辛酸吸附行为的研究

Keywords: 硫辛酸,吸附,树脂,热力学,动力学

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Abstract:

通过静态吸附实验,研究了XAD-4,NDA-100和ND-90树脂对乙醇水溶液中硫辛酸的吸附热力学及动力学特性.结果表明硫辛酸在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.在NDA-100和ND-90树脂上的吸附也符合Langmuir等温吸附方程,但并不只是单层吸附,同时兼有毛细管凝聚和微孔填充作用,吸附过程可分为大孔和中孔区吸附以及微孔区吸附两个阶段,两个阶段都符合准一级动力学吸附方程.

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