Are there any risks of the disposal of pesticide effluents in soils? Biobed system meets ecotoxicology ensuring safety t
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Are there any risks of the disposal of pesticide effluents in soils? Biobed system meets ecotoxicology ensuring safety to soil fauna Letícia Scopel Camargo Carniel 1,6 Julia Carina Niemeyer 2 Luís Carlos Iuñes de Oliveira Filho Douglas Alexandre 1 Luciano Gebler 5 Osmar Klauberg-Filho 1 ●
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Accepted: 25 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract The biobed is a purification system, which reduces soil pollution for receiving pesticide residues from handling and washing machinery in agricultural areas. The aims of this study were (1) to assess ecotoxicity effects over time to soil fauna, posed by Lorsban® 480 BR (Chlorpyrifos) and Dithane® NT (Mancozeb) residues when disposed of in a biobed system compared with two subtropical soils, and (2) to assess ecotoxicity effects over time to soil fauna simulating an accidental spillage with Lorsban® 480 BR at the biobed. A semi-field experiment was conducted for 420 days in southern Brazil, testing continuous disposal of washing pulverization tanks in biobeds, Typic Haploperox or Typic Hapludults. In addition, different biobeds received a single dose (1 L) of Lorsban® 480 BR to simulate an accidental spillage. Chronic ecotoxicity tests were performed using Folsomia candida, Eisenia andrei, and Enchytraeus crypticus in different sampling times for both experiments. F. candida was the most sensitive species. The biobed system was able to eliminate effects from residues of both pesticides over time in all species, which did not happen in both natural soils. In accidental spillage simulation, even 420 days after contamination, F. candida did not show reproduction. The biobeds can be a feasible alternative for the disposal and treatment residues of pesticides, also for handling and washing pesticides activities. The system was efficient in promoting degradation and reducing ecotoxicity effects posed by Lorsban® 480 BR and Dithane® NT for soil fauna. It is a safe alternative to avoid soil contamination. Keywords Biopurification system Waste treatment Pesticides Ecotoxicity assessment Soil invertebrates. ●
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Introduction Supplementary information The online version of this article (https:// doi.org/10.1007/s10646-020-02260-x) contains supplementary material, which is available to authorized users. * Osmar Klauberg-Filho [email protected] 1
Programa de Pós-Graduação em Ciência do Solo (PPGCS), Universidade do Estado de Santa Catarina (UDESC Lages), Lages, SC 88520-000, Brazil
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Programa de Pós-Graduação em Ecossistemas Agrícolas e Naturais (PPGEAN), Universidade Federal de Santa Catarina, Curitibanos, SC 89520-000, Brazil
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Departamento de Solos, Universidade Federal de Pelotas (UFPel), Capão do Leão, RS 96160-000, Brazil
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Universidade do Estado de Santa Catarina (UDESC Oeste), Chapecó, SC 89815-630, Brazil
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Embrapa Uva e Vinho, BR 285, Km 115, POB 177, Vacaria, RS 95200-970, Brazil
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Present address: Regulatory Ecotoxicology, BASF S.A., São Paulo, SP, Brazil
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