Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals

The contamination of water resources by heavy metals and pharmaceuticals is a significant threat to human health and the environment. Pectin is a promising material for removing heavy metals from water. However, its removal efficacy for other types of pollutants is limited. In this study, we develop...

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Autores: Martínez Sabando, Javier, Coin, Francesco, Raposo Fernández, Juan Carlos, Larrañaga Varga, Aitor, Melillo, Jorge Humberto, Cerveny Murcia, Silvina
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/68284
Acceso en línea:http://hdl.handle.net/10810/68284
Access Level:acceso abierto
Palabra clave:pectin
adsorption kinetics
water treatment
crosslinking
emerging contaminants
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spelling Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metalsMartínez Sabando, JavierCoin, FrancescoRaposo Fernández, Juan CarlosLarrañaga Varga, AitorMelillo, Jorge HumbertoCerveny Murcia, Silvinapectinadsorption kineticswater treatmentcrosslinkingemerging contaminantsThe contamination of water resources by heavy metals and pharmaceuticals is a significant threat to human health and the environment. Pectin is a promising material for removing heavy metals from water. However, its removal efficacy for other types of pollutants is limited. In this study, we developed a novel approach to enhance the remediation capacity of pectin (with a low degree of methylation) by crosslinking it with different agents: calcium, europium, and their combination. We performed scanning electron microscopy, infrared spectroscopy, and X-ray diffraction experiments to understand the molecular structure of pectin after gelation with the three agents. Our results showed that calcium, europium, and their combination all induce the gelation of pectin. However, the reticulated pectin structures exhibited significant structural differences depending on the type of crosslinking agent used, which affected the adsorption capacity. Specifically, calcium cations partially formed a crystalline “egg-box” structure, whereas europium cations produced a more homogeneous network without crystalline regions. The dual-crosslinking system comprising calcium and europium cations resulted in an intermediate network with both crystalline and amorphous regions. Our findings suggest that dual-cross-linked pectin is a highly effective adsorbent for the simultaneous removal of both heavy metals and pharmaceutical products. This novel approach of crosslinking pectin with multiple agents has the potential to significantly enhance its remediation capacity, offering a promising solution for the simultaneous removal of multiple pollutants from water.This work was supported by the Ministerio de Ciencia, Innovación y Universidades code PID2019-104650GB-C21 (MCIN/AEI/10.13039/501100011033), CSIC (I-COOP2020 COOPB20502), and IT1566-22 (Basque Government).Elsevier202420242023info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/68284reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PID2019-104650GB-C21/https://www.sciencedirect.com/science/article/pii/S1385894723048933info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Atribución 3.0 Españaoai:addi.ehu.eus:10810/682842026-06-18T09:23:17Z
dc.title.none.fl_str_mv Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
title Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
spellingShingle Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
Martínez Sabando, Javier
pectin
adsorption kinetics
water treatment
crosslinking
emerging contaminants
title_short Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
title_full Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
title_fullStr Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
title_full_unstemmed Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
title_sort Dual crosslinking of low-methoxyl pectin by calcium and europium for the simultaneous removal of pharmaceuticals and divalent heavy metals
dc.creator.none.fl_str_mv Martínez Sabando, Javier
Coin, Francesco
Raposo Fernández, Juan Carlos
Larrañaga Varga, Aitor
Melillo, Jorge Humberto
Cerveny Murcia, Silvina
author Martínez Sabando, Javier
author_facet Martínez Sabando, Javier
Coin, Francesco
Raposo Fernández, Juan Carlos
Larrañaga Varga, Aitor
Melillo, Jorge Humberto
Cerveny Murcia, Silvina
author_role author
author2 Coin, Francesco
Raposo Fernández, Juan Carlos
Larrañaga Varga, Aitor
Melillo, Jorge Humberto
Cerveny Murcia, Silvina
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv pectin
adsorption kinetics
water treatment
crosslinking
emerging contaminants
topic pectin
adsorption kinetics
water treatment
crosslinking
emerging contaminants
description The contamination of water resources by heavy metals and pharmaceuticals is a significant threat to human health and the environment. Pectin is a promising material for removing heavy metals from water. However, its removal efficacy for other types of pollutants is limited. In this study, we developed a novel approach to enhance the remediation capacity of pectin (with a low degree of methylation) by crosslinking it with different agents: calcium, europium, and their combination. We performed scanning electron microscopy, infrared spectroscopy, and X-ray diffraction experiments to understand the molecular structure of pectin after gelation with the three agents. Our results showed that calcium, europium, and their combination all induce the gelation of pectin. However, the reticulated pectin structures exhibited significant structural differences depending on the type of crosslinking agent used, which affected the adsorption capacity. Specifically, calcium cations partially formed a crystalline “egg-box” structure, whereas europium cations produced a more homogeneous network without crystalline regions. The dual-crosslinking system comprising calcium and europium cations resulted in an intermediate network with both crystalline and amorphous regions. Our findings suggest that dual-cross-linked pectin is a highly effective adsorbent for the simultaneous removal of both heavy metals and pharmaceutical products. This novel approach of crosslinking pectin with multiple agents has the potential to significantly enhance its remediation capacity, offering a promising solution for the simultaneous removal of multiple pollutants from water.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/68284
url http://hdl.handle.net/10810/68284
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PID2019-104650GB-C21/
https://www.sciencedirect.com/science/article/pii/S1385894723048933
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
Atribución 3.0 España
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:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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