Removal of methylene blue from aqueous solutions by straw based adsorbent in a fixed-bed column

被引：106

作者：

Zhang, Wenxuan ^{[1
]}

Dong, Lei ^{[1
]}

Yan, Han ^{[1
]}

Li, Haijiang ^{[1
]}

Jiang, Ziwen ^{[1
]}

Kan, Xiaowei ^{[1
]}

Yang, Hu ^{[1
]}

Li, Aimin ^{[2
]}

Cheng, Rongshi ^{[1
,3
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Technol, Key Lab Mesoscop Chem MOE, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210093, Peoples R China

[3] S China Univ Technol, Coll Mat Sci & Engn, Inst Polymer, Guangzhou 510640, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2011年 / 173卷 / 02期

关键词：

Modified straw adsorbent; Adsorption of methylene blue; Column study; Thomas model; ACTIVATED CARBON; PACKED-BED; ADSORPTION; BIOSORPTION; EQUILIBRIUM; WATER; DYE; DEGRADATION; BIOSORBENTS; PHOSPHATE;

D O I：

10.1016/j.cej.2011.08.001

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：429 / 436

页数：8

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