Iron(III) (hydr)oxide-mediated photooxidation of 2-aminophenol in aqueous solution: a kinetic study

被引：45
作者：
Andreozzi, R [1 ]
Caprio, V [1 ]
Marotta, R [1 ]
机构：
[1] Univ Naples Federico II, Fac Ingn, Dipartimento Ingn Chim, I-80125 Naples, Italy
来源：
WATER RESEARCH | 2003年 / 37卷 / 15期
关键词：
goethite; 2-aminophenol; iron oxide-mediated photodegradation; photocatalysis; iron(III) oxyhydroxides; kinetics;
D O I：
10.1016/S0043-1354(03)00271-9
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The photooxidation of 2-aminophenol in aqueous solution in the presence of an iron(III) (hydr)oxide (goethite, alpha-FeOOH), used as a heterogeneous catalyst, has been investigated at different pH (3.0-8.0) and catalyst loads (100-500 mg/l) aiming mainly at elucidating the reaction kinetics. A large experimental campaign allowed to rule out the intervention of HO radicals in the photodegradation of 2-aminophenol. The classic Langmuir-Hinshelwood equation has been used for the kinetic analysis, best estimated values of the kinetic parameters being derived by means of an optimization procedure. The dependence of reaction kinetics on the temperature in the range of 285-308 K has also been investigated. (C) 2003 Elsevier Science Ltd. All rights reserved.
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收藏
页码：3682 / 3688
页数：7
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