Removal of arsenic from ammoniacal etching waste liquor by 3-(2-aminoethylamino) propyltrimethoxysilane functionalized silica gel sorbent

被引：9
|
作者：
Fan, Hong-Tao [1 ]
Li, Jing [1 ]
Guo, Meng-Meng [1 ]
Fan, Xue-Lei [1 ]
Zhang, Dong-Sheng [1 ]
Su, Zi-Jie [1 ]
Wang, Juan [1 ]
机构：
[1] Shenyang Univ Chem Technol, Coll Appl Chem, Shenyang 110142, Peoples R China
来源：
DESALINATION AND WATER TREATMENT | 2012年 / 50卷 / 1-3期
基金：
美国国家科学基金会;
关键词：
Removal; Arsenic; 3-(2-Aminoethylamino)propyltrimethoxysilane; Silica gel; Etching waste liquor; ACTIVATED CARBONS; ADSORPTION; OXIDATION; COPPER; RECOVERY; AS(III); SCALE; WATER;
D O I：
10.1080/19443994.2012.708535
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
3-(2-Aminoethylamino) propyltrimethoxysilane (AAPTS) functionalized silica gel (AAPTS/SiO2) was synthesized by a sol-gel process and was used for the arsenic removal from ammoniacal etching waste liquor which was oxidized by H2O2. The AAPTS/SiO2 sorbent reached absorption saturation at 20 min and had a substantial binding capacity in the range of pH 4.7-10.2. The maximum static adsorption capacity of AAPTS/SiO2 sorbent for arsenic was 16.1mg g(-1). Equilibrium data fitted perfectly with Langmuir isotherm model compared to Freundlich isotherm model. The removal rate of arsenic by AAPTS/SiO2 sorbent was 95.4% at the optimal conditions from ammoniacal etching waste liquor. Results showed that AAPTS/SiO2 sorbent could be used for the arsenic removal from ammoniacal etching waste liquor.
引用
收藏
页码：51 / 58
页数：8
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