Effect of structural properties of acid dyes on their adsorption behaviour from aqueous solutions by amine modified silica

被引：153
作者：
Donia, Ahmed M. [1 ]
Atia, Asem A. [1 ]
Al-amrani, Waheeba A. [1 ]
El-Nahas, Ahmed M. [1 ]
机构：
[1] Menoufia Univ, Dept Chem, Fac Sci, Shibin Al Kawm, Egypt
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 161卷 / 2-3期
关键词：
Modified silica; Adsorption; Acid dyes; Kinetics; Water treatment; ANIONIC DYES; TEXTILE DYE; CONGO-RED; REMOVAL; EQUILIBRIUM; CHITOSAN; THERMODYNAMICS; TEMPERATURE; PARTICLES; BENTONITE;
D O I：
10.1016/j.jhazmat.2008.05.042
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Monoamine modified silica particles (MAMS) were prepared and characterized by infrared (FT-IR) and thermogravimetric analysis (TGA). The modified silica particles were used for removal of acid orange 10 (AO-10) and acid orange 12 (AO-12) from their aqueous solutions. The adsorption behaviour of the two dyes was studied at different experimental conditions of pH, contact time, concentration of dye, temperature and salt solution. The adsorption of AO-10 followed pseudo-first order kinetics whereas AO-12 followed pseudo-second order. The two dyes showed different modes of interaction with silica surface. Desorption of the loaded dyes was carried out at pH 10 and found to be 10.4 and 91.6% for AO-12 and AO-10, respectively. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1544 / 1550
页数：7
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