Surfactant-assisted removal of swep residues from soil and photocatalytic treatment of the washing wastes

被引：44

作者：

Fabbri, D. ^{[1
]}

Crime, A. ^{[1
]}

Davezza, M. ^{[1
]}

Medana, C. ^{[1
]}

Baiocchi, C. ^{[1
]}

Prevot, A. Bianco ^{[1
]}

Pramauro, E. ^{[1
]}

机构：

[1] Univ Turin, Dipartimento Chim Analit, I-10125 Turin, Italy

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 92卷 / 3-4期

关键词：

Swep; Photocatalysis; Soil washing; Soil remediation; DEGRADATION; PHOTODEGRADATION; PROTONATION; MONURON;

D O I：

10.1016/j.apcatb.2009.08.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The photocatalytic treatment of soil washing wastes containing the pesticide swep and three different surfactants: sodium dodecylsulfate (SIDS), hexadecyltrimethylammonium bromide (HTAB) and polyoxyethylene(8) dodecyl ether (C12E8), has been investigated. Better extraction performances of swep (methyl-N-(3,4-dichlorophenyl)carbamate) from contaminated soil samples have been obtained using aqueous SDS solutions. The pesticide abatement in the wastes, performed by photocatalysis in the presence of irradiated TiO2 dispersions, was faster in the presence of SIDS and slower in the presence of HTAB, whereas a marked degradation inhibition was observed when C12E8 solutions were used. The monitoring of end products formation in water, together with a detailed MS examination of the transient intermediates formed during the earlier steps of the pesticide degradation, allowed to give insight into the process mechanism operating in aqueous media. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：318 / 325

页数：8

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