Continuous photodegradation of naphthalene in water catalyzed by TiO2 supported on glass Raschig rings

被引：46

作者：

García-Martínez, MJ ^{[1
]}

Canoira, L ^{[1
]}

Blázquez, G ^{[1
]}

Da Riva, I ^{[1
]}

Alcántara, R ^{[1
]}

Llamas, JF ^{[1
]}

机构：

[1] Univ Politecn Madrid, Sch Mines, Dept Chem Engn & Fuels, Madrid 28003, Spain

来源：

CHEMICAL ENGINEERING JOURNAL | 2005年 / 110卷 / 1-3期

关键词：

naphthalene; photodegradation; continuous reactor; titanium dioxide;

D O I：

10.1016/j.cej.2005.03.020

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Polycyclic aromatic hydrocarbons (PAH's) are a class of persistent organic pollutants of special concern since they are carcinogenic and mutagenic. In this paper, the design of a continuously stirred tank reactor is reported for the photodegradation of the simplest and most water-soluble PAH, naphthalene, in water using TiO2 (in the crystalline form of anatase), supported on glass Raschig rings as catalyst, with oxygen as electron acceptor. A first order kinetic rate constant has been calculated for this photodegradation. The irradiated solution after the reaction has been analysed and only traces of 1-naphthol, 1,4-naphthalenedione and phthalates have been found as intermediate products of the photodegradation. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：123 / 128

页数：6

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