Biosorption of Acid Yellow 17 from aqueous solution by non-living aerobic granular sludge

被引:147
作者
Gao, Jingfeng [1 ]
Zhang, Qian [1 ]
Su, Kai [1 ]
Chen, Ranni [1 ]
Peng, Yongzhen [1 ]
机构
[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
基金
中国国家自然科学基金;
关键词
Biosorption; Acid Yellow 17; Non-living aerobic granular sludge; Isotherm; Kinetic; MALACHITE GREEN-DYE; LOW-COST ADSORBENTS; BAGASSE FLY-ASH; DE-OILED-SOYA; OF-THE-ART; BASIC DYE; ACTIVATED-SLUDGE; WASTE MATERIALS; WATER-TREATMENT; BOTTOM ASH;
D O I
10.1016/j.jhazmat.2009.09.039
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Batch biosorption experiments were carried out for the removal of Acid Yellow 17 from aqueous solution using non-living aerobic granular sludge as an effective biosorbent. The effects of solution pH value, biosorbent dosage, initial Acid Yellow 17 concentration, NaCl concentration and temperature on the biosorption were investigated. The experimental results indicate that this process was highly dependent on pH value and the pH value of 2.0 was favorable. The Temkin isotherm was more applicable for describing the biosorption equilibrium at the whole concentration range than the Freundlich and Langmuir isotherm. The results of kinetics study show that the pseudo-second-order model fitted to the experimental data well. Both intraparticle diffusion and boundary layer diffusion might affect the biosorption rate. Thermodynamic studies demonstrate that the biosorption process was spontaneous and exothermic. The FTIR analysis before and after Acid Yellow 17 binding indicated that functional groups such as amine, hydroxyl, carboxyl and either on the non-living aerobic granular sludge would be the active binding sites for the biosorption of the studied dye. These results show that non-living aerobic granular sludge could be effectively used as a low-cost and alternative biosorbent for the removal of Acid Yellow 17 dye from wastewater. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:215 / 225
页数:11
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