弗伦德利希方程
朗缪尔吸附模型
朗缪尔
木屑
吸附
核化学
活性炭
吸附剂
栏(排版)
化学工程
作者
Wenxuan Zhang,Lei Dong,Han Yan,Haijiang Li,Ziwen Jiang,Xiaowei Kan,Hu Yang,Aimin Li,Rongshi Cheng
标识
DOI:10.1016/j.cej.2011.08.001
摘要
Abstract In this paper, carboxymethyl straw has been applied to eliminate methylene blue (MB) in a fixed-bed column. The straw based adsorbent has shown high MB uptake in column. Various models such as Thomas, Clark, Adams–Bohart, Yoon–Nelson, Wolborska, and BDST model have been employed to fit the experimental data carefully. Among them, Thomas model is found to be the most suitable one to describe the adsorption behaviors, according with the monolayer chemical adsorption mechanism. Then the effects of initial solution pH, bed height, temperature, initial MB concentration and flow rate on column adsorption have been studied in detail based on Thomas model. It has been found that initial solution pH, bed height, initial MB concentration and flow rate can affect the breakthrough curves obviously, while temperature has no evident influence on the MB adsorption of the modified straw.
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