Enhanced adsorption of Methylene Blue by EDTAD-modified sugarcane bagasse and photocatalytic regeneration of the adsorbent

被引：52
|
作者：
Xing, Yun [1 ]
Liu, Dong [2 ]
Zhang, Li-Ping [1 ]
机构：
[1] Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455002, Peoples R China
[2] Zhengzhou Univ, Dept Nephropathy, Zhengzhou 450052, Peoples R China
来源：
DESALINATION | 2010年 / 259卷 / 1-3期
关键词：
Ethylenediaminetetraacetic dianhydride; Sugarcane bagasse; Adsorption; Methylene Blue; Photocatalytic regeneration; BASIC DYE; BIOSORPTION; REMOVAL; WASTE;
D O I：
10.1016/j.desal.2010.04.008
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Ethylenediaminetetraacetic dianhydride (EDTAD) modified sugarcane bagasse (SB) was prepared, and characterized by Fourier transform infrared spectroscopy (FTIR). Due to the presence of a large number of carboxyl groups, the adsorption capacity of the EDTAD-modified SB (EDTAD-SB) for Methylene Blue (MB) showed a significant increase compared with SB. The maximum adsorption capacity was 115.3 mg g(-1) for MB, according to the Langmuir equation. Kinetic studies showed better correlation coefficients for a pseudo-second-order kinetic model, confirming that the sorption rate was controlled by a chemisorption process. Photocatalytic regeneration of spent EDTAD-SB using UV/TiO2 is effective. Further, the regenerated EDTAD-SB exhibits 85% efficiency for subsequent adsorption cycle with MB aqueous solutions. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：187 / 191
页数：5
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