Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture

Microplastics from mulch films can be a source of chemical contamination to agricultural soils. In this context, biodegradable films have been widely positioned as a greener choice. However, their sorption/desorption capabilities, in contrast to the conventional plastic types remain understudied. It...

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Autores: Sahai, Harshit, Hernando Guil, María Dolores, Martínez Bueno, María Jesús, Aguilera del Real, Ana M., Fernández-Alba, Amadeo R.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/386132
Acceso en línea:http://hdl.handle.net/10261/386132
Access Level:acceso abierto
Palabra clave:Biodegradable
Mulch films
Pesticides
Microplastics
Sorption
Desorption
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spelling Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agricultureSahai, HarshitHernando Guil, María DoloresMartínez Bueno, María JesúsAguilera del Real, Ana M.Fernández-Alba, Amadeo R.BiodegradableMulch filmsPesticidesMicroplasticsSorptionDesorptionMicroplastics from mulch films can be a source of chemical contamination to agricultural soils. In this context, biodegradable films have been widely positioned as a greener choice. However, their sorption/desorption capabilities, in contrast to the conventional plastic types remain understudied. It is for this reason that objective evaluation of their interactions with residual agricultural contaminants becomes important. Our findings reveal that polyethylene (PE) mulch films retained lower amounts of pesticide residues and demonstrated a higher desorption/release [median desorption = 71.86 μg/L or about 50%], while polybutylene adipate terephthalate (PBAT) mulch films retained higher amounts of pesticide residues onto their surface and demonstrated a much lower desorption [median desorption = 24.27 μg/L or about 17%] after a spraying event. A higher ambient temperature had no significant effect on final desorption amounts in both PE [median = 65.27 μg/L at 20 °C and 74.23 μg/L at 40 °C] and PBAT [median = 24.26 μg/L at 20 °C and 24.78 μg/L at 40 °C] mulch films. However, it did favour a faster desorption pace in PE films. Desorption in PBAT and PE plastic types was correlated with the log Kow value [Spearman's correlation: 0.857 and 0.837 respectively, p < 0.05]. However, only a moderate correlation with pKa was observed in PBAT [Spearman's correlation: 0.478, p < 0.05], while none for PE plastic type. Sorption of pesticides onto biodegradable PBAT microplastics were best explained by Elovich [R2: 0.937–0.959] and pseudo-second order kinetics [R2: 0.942–0.987], suggesting the presence of chemisorption. Furthermore, Weber Morris plots suggested the presence of a multi-step process and Boyd plots indicated that film diffusion or chemical bond formation was the rate-limiting step governing this phenomenon.Authors acknowledge the support of “FoodTraNet” MSCA-ITN project, and the funding received from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 956265, as well as to the Spanish Ministry of Science, Innovation and Universities (MICINN) for the financial support given to the projects TED2021-131609B–C31, “CERTAIN” (PID2020-116230RB-I00) and project PLEC2021-007693.Peer reviewedElsevierEuropean CommissionMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/386132reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/956265info:eu-repo/grantAgreement/AEI//TED2021-131609B–C31info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116230RB-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PLEC2021-007693The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.chemosphere.2024.141183https://doi.org/10.1016/j.chemosphere.2024.141183Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3861322026-05-22T06:33:51Z
dc.title.none.fl_str_mv Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
title Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
spellingShingle Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
Sahai, Harshit
Biodegradable
Mulch films
Pesticides
Microplastics
Sorption
Desorption
title_short Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
title_full Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
title_fullStr Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
title_full_unstemmed Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
title_sort Evaluation of the sorption/desorption processes of pesticides in biodegradable mulch films used in agriculture
dc.creator.none.fl_str_mv Sahai, Harshit
Hernando Guil, María Dolores
Martínez Bueno, María Jesús
Aguilera del Real, Ana M.
Fernández-Alba, Amadeo R.
author Sahai, Harshit
author_facet Sahai, Harshit
Hernando Guil, María Dolores
Martínez Bueno, María Jesús
Aguilera del Real, Ana M.
Fernández-Alba, Amadeo R.
author_role author
author2 Hernando Guil, María Dolores
Martínez Bueno, María Jesús
Aguilera del Real, Ana M.
Fernández-Alba, Amadeo R.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Biodegradable
Mulch films
Pesticides
Microplastics
Sorption
Desorption
topic Biodegradable
Mulch films
Pesticides
Microplastics
Sorption
Desorption
description Microplastics from mulch films can be a source of chemical contamination to agricultural soils. In this context, biodegradable films have been widely positioned as a greener choice. However, their sorption/desorption capabilities, in contrast to the conventional plastic types remain understudied. It is for this reason that objective evaluation of their interactions with residual agricultural contaminants becomes important. Our findings reveal that polyethylene (PE) mulch films retained lower amounts of pesticide residues and demonstrated a higher desorption/release [median desorption = 71.86 μg/L or about 50%], while polybutylene adipate terephthalate (PBAT) mulch films retained higher amounts of pesticide residues onto their surface and demonstrated a much lower desorption [median desorption = 24.27 μg/L or about 17%] after a spraying event. A higher ambient temperature had no significant effect on final desorption amounts in both PE [median = 65.27 μg/L at 20 °C and 74.23 μg/L at 40 °C] and PBAT [median = 24.26 μg/L at 20 °C and 24.78 μg/L at 40 °C] mulch films. However, it did favour a faster desorption pace in PE films. Desorption in PBAT and PE plastic types was correlated with the log Kow value [Spearman's correlation: 0.857 and 0.837 respectively, p < 0.05]. However, only a moderate correlation with pKa was observed in PBAT [Spearman's correlation: 0.478, p < 0.05], while none for PE plastic type. Sorption of pesticides onto biodegradable PBAT microplastics were best explained by Elovich [R2: 0.937–0.959] and pseudo-second order kinetics [R2: 0.942–0.987], suggesting the presence of chemisorption. Furthermore, Weber Morris plots suggested the presence of a multi-step process and Boyd plots indicated that film diffusion or chemical bond formation was the rate-limiting step governing this phenomenon.
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/386132
url http://hdl.handle.net/10261/386132
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/H2020/956265
info:eu-repo/grantAgreement/AEI//TED2021-131609B–C31
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-116230RB-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PLEC2021-007693
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.chemosphere.2024.141183
https://doi.org/10.1016/j.chemosphere.2024.141183
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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