Rates of production of hydroxyl radicals and singlet oxygen from irradiated compost

被引：25

作者：

Coelho, Christian ^{[1
]}

Cavani, Luciano ^{[3
]}

ter Halle, Alexandra ^{[1
,2
]}

Guyot, Ghislain ^{[1
]}

Ciavatta, Claudio ^{[3
]}

Richard, Claire ^{[1
,2
]}

机构：

[1] Univ Blaise Pascal, Clermont Univ, LPMM, F-63000 Clermont Ferrand, France

[2] CNRS, UMR 6505, LPMM, F-63171 Aubiere, France

[3] Univ Bologna, Dipartimento Sci & Tecnol Agroambientali, I-40127 Bologna, Italy

来源：

CHEMOSPHERE | 2011年 / 85卷 / 04期

关键词：

Compost; Hydroxyl radicals; Singlet oxygen; Photochemistry; Remediation; Micropollutants; HUMIC SUBSTANCES; ORGANIC-MATTER; FURFURYL ALCOHOL; GENERATION; WASTE; LIGHT; SOILS;

D O I：

10.1016/j.chemosphere.2011.07.007

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 organic matter from compost to promote the catalytic photodegradation of micropollutants by solar light appears to be environmentally promising. However, quantitative evaluation of the photodegradation potential of the compost is needed. Our goal was to measure the formation rate of hydroxyl radicals and singlet oxygen, two strongly oxidant species, from irradiated compost organic matter. These two reactive species were photogenerated in all of our extracts regardless of the origin of the compost or the extraction procedure; however, their formation rates increased with composting time. Two herbicides and a fungicide were successfully photodegraded when irradiated with simulated or natural solar light in the presence of the compost organic matter or compost suspensions. For reasons of simplification and ease, the use of the latter is recommended in practice. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：630 / 636

页数：7

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