Methylene blue adsorption onto swede rape straw (Brassica napus L.) modified by tartaric acid: Equilibrium, kinetic and adsorption mechanisms

被引：155

作者：

Feng, Yanfang ^{[1
]}

Zhou, Hui ^{[1
]}

Liu, Guohua ^{[2
]}

Qiao, Jun ^{[1
]}

Wang, Jinhua ^{[1
]}

Lu, Haiying ^{[1
]}

Yang, Linzhang ^{[1
,3
]}

Wu, Yonghong ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

[2] Nanjing Forestry Univ, Bamboo Res Inst, Nanjing 210037, Jiangsu, Peoples R China

[3] Jiangsu Acad Agr Sci, Nanjing 210014, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 125卷

关键词：

Methylene blue; Tartaric acid; Swede rape straw (Brassica napus L.); Adsorption; Bioadsorbent; DYE CONGO RED; AQUEOUS-SOLUTION; ACTIVATED CARBON; MALACHITE GREEN; WASTE MATERIAL; PROCESS DESIGN; REMOVAL; THERMODYNAMICS; BATCH; ISOTHERMS;

D O I：

10.1016/j.biortech.2012.08.128

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of this study was to develop a promising and competitive bioadsorbent with the abundant of source, low price and environmentally friendly characters to remove cationic dye from wastewater. The swede rape straw (Brassica napus L.) modified by tartaric acid (SRSTA) was prepared, characterized and used to remove methylene blue (MB) from aqueous solution at varied operational conditions (including MB initial concentrations, adsorbent dose, etc.). Results demonstrated that the equilibrium data was well fitted by Langmuir isotherm model. The maximum MB adsorption capacity of SRSTA was 246.4 mg g(-1) which was comparable to the results of some previous studied activated carbons. The higher dye adsorption capacity could be attributed to the presence of more functional groups such as carboxyl group on the surface of SRSTA. The adsorption mechanism was also discussed. The results indicate that SRSTA is a promising and valuable absorbent to remove methylene blue from wastewater. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：138 / 144

页数：7

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