Removal of sorbed polycyclic aromatic hydrocarbons from soil, sludge and sediment samples using the Fenton's reagent process

被引：203

作者：

Flotron, V ^{[1
]}

Delteil, C ^{[1
]}

Padellec, Y ^{[1
]}

Camel, V ^{[1
]}

机构：

[1] Inst Natl Agron Paris Grignon, Chim Analyt Lab, UMR Environm & Grandes Cultures, F-75231 Paris, France

来源：

CHEMOSPHERE | 2005年 / 59卷 / 10期

关键词：

AOP; Fenton; oxidation; PAH; remediation; solid;

D O I：

10.1016/j.chemosphere.2004.12.065

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The use of the Fenton's reagent process has been investigated for the remediation of environmental matrices contaminated by polycyclic aromatic hydrocarbons (PAHs). Laboratory experiments were first conducted in aqueous solutions, to study the kinetics of oxidation and adsorption of PAHs. Benzo[a]pyrene was more rapidly degraded than adsorbed, while only partial oxidation of fluoranthene occurred. In the case of benzo[b]fluoranthene, its adsorption prevented its oxidation. Besides competition effects between PAHs were found, with slower oxidation of mixtures as compared to single PAH solutions. Apparition of some by-products was observed, and a di-hydroxylated derivative of benzo[a]pyrene could be identified under our conditions. Consequently, application to solid environmental matrices (soil, sludge and sediment samples) was performed using large amounts of reagents. The efficiency of the Fenton treatment was dependent on the matrix characteristics (such as its organic carbon content) and the PAH availability (correlated to the date and level of contamination). However, no pH adjustment was required, as well as no iron addition due to the presence of iron oxides in the solid matrices, suggesting the potential application of Fenton-like treatment for the remediation of PAH-contaminated environmental solids. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1427 / 1437

页数：11

共 29 条

[21] THE EFFECT OF SORPTION ON THE OXIDATION OF POLYCHLORINATED-BIPHENYLS (PCBS) BY HYDROXYL RADICAL [J].