Repositorio
Institucional

Diez, M. C.

Urrutia, C.

Rubilar, O.

Tortella, G. R.

Degradation of pesticide mixture on modified matrix of a biopurification system with alternatives lignocellulosic wastes

PERGAMON-ELSEVIER SCIENCE LTD

CHEMOSPHERE

en

The biobed systems were designed to retain and to degrade pesticides through the properties of a biomixture composed of straw (ST), topsoil and peat (PT) 2:1:1 v/v. The ST is the main substrate in the biomixture, as it allows the proliferation of fungi that promotes pesticide degradation. The use of readily available components in the biomixture is an important aspect to build a biobed. Therefore, potential use of readily available wastes as barley husk (BH), sawdust (SW) and oat husk (OH), as total or partial substitutes of ST were tested in pesticide degradation studies. Metabolite formation and the biological activities were also evaluated. Biomixture composed of OH was highly efficient in pesticide degradation, with t(1/2) values of 28.6, 58.9 and 26.8 d for atrazine (ATZ), chlorpyrifos (CHL) and isoproturon (ISP). On the other hand, comparable for degrading capacities with the ST based biomixture were obtained with SW and BH, but only as partial replacement. Contrarily, high t(1/2) values (more than 100 d) were obtained in biomixtures with total substitution of ST by SW or BH. Metabolite formation was observed in all biomixtures tested, but without clear formation patterns. Moreover, high and stable biological activity was observed in the biomixtures composed of OH. Therefore, our results demonstrated that ST can be partial or totally replaced by OH in the biomixture allowing an efficient degradation of pesticide mixture. However, it is recommended that ST can be only partially replaced by BH and SW in the biomixture to allow efficient pesticide degradation. (C) 2013 Published by Elsevier Ltd.

Artículo original

This study was financed by the FONDECYT Project No. 1090678, the CONICYT- 21110405-2011 doctoral support scholarship and CONICYT-24121122-2012 thesis support scholarship.

Este estudio fue financiado por el Proyecto FONDECYT No. 1090678, la beca de apoyo doctoral CONICYT-21110405-2011 y la beca de apoyo a la tesis CONICYT-24121122-2012.

10.1016/j.chemosphere.2013.04.088

pdf

Biobed

Pesticide mixture

Lignocellulosic waste

Biological activities

CHLORPYRIFOS DEGRADATION

BIOBED COMPOSITION

SOIL

BIOMIXTURES

ADSORPTION

POINT

Biolecho

Mezcla de plaguicidas

Residuos lignocelulósicos

Actividades biológicas

DEGRADACIÓN DE CLORPIRIFOS

COMPOSICIÓN DE BIOBED

SUELO

BIOMIXUMENTOS

ADSORCIÓN

PUNTO

Biobed

Pesticide mixture

Lignocellulosic waste

Biological activities

CHLORPYRIFOS DEGRADATION

BIOBED COMPOSITION

SOIL

BIOMIXTURES

ADSORPTION

POINT

Biolecho

Mezcla de plaguicidas

Residuos lignocelulósicos

Actividades biológicas

DEGRADACIÓN DE CLORPIRIFOS

COMPOSICIÓN DE BIOBED

SUELO

BIOMIXUMENTOS

ADSORCIÓN

PUNTO

Biotecnología Ambiental

Biorremediación

Ingeniería Ambiental y Geológica

Degradation of pesticide mixture on modified matrix of a biopurification system with alternatives lignocellulosic wastes

CHEMOSPHERE

hibrida

verde

metadata

metadata

PMID 23746365

en

Artículo original

versión publicada

ANID CONICYT FONDECYT 1090678#ANID CONICYT 21110405#ANID CONICYT 24121122

ANID CONICYT FONDECYT 1090678

ANID CONICYT 21110405

ANID CONICYT 24121122

PERGAMON-ELSEVIER SCIENCE LTD

0045-6535

1361

1366

Ciencias ambientales

Environmental Sciences

pdf

WOS:000323142000014