Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants

The substitution of conventional organic solvents for others with less environmental impact is one of the basic premises of green chemistry. To carry this out optimally, tools based on the similarity of thermophysical behaviour are being developed. Thus, the characterization of new solvents is a key...

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Autores: Bergua, Fernando, Castro, Miguel, Lafuente, Carlos, Artal, Manuela
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Recursos:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:121179
Acesso em linha:http://zaguan.unizar.es/record/121179
Access Level:acceso abierto
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spelling Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminantsBergua, FernandoCastro, MiguelLafuente, CarlosArtal, ManuelaThe substitution of conventional organic solvents for others with less environmental impact is one of the basic premises of green chemistry. To carry this out optimally, tools based on the similarity of thermophysical behaviour are being developed. Thus, the characterization of new solvents is a key step in any field of application. In this work, we studied the eutectic hydrophobic thymol + l-menthol system. The solid–liquid equilibrium of the system and several properties of three of its mixtures close to eutectic composition were measured and discussed. Calculations and correlations were performed to obtain properties of interest such as the internal pressure, critical temperature, and solubility parameter, among others. To predict the system behaviour under any operating conditions, the PC-SAFT equation of state was validated. Considering the problem of the presence of drugs as micro pollutants in the environment, the ability of this eutectic system to both dissolve drugs and remove them from contaminated water was also analysed. The results showed a strong thymol-l-menthol interaction, and a higher thymol ratio made the liquid more compact and structured but less polar and viscous. The difference in densities with respect to that of water and the moderate viscosity values indicated that this system can be an adequate solvent in liquid–liquid extraction processes. The solubilities of quercetin (), nitrofurantoin () and tetracycline () were enhanced in the eutectic mixtures; for , the solubility was 10000-fold higher than that in water. Finally, this system could be used to remove traces of and from the water, with an efficiency of up to 81 %.2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/121179reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/DGA/E31-20Rinfo:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragóninfo:eu-repo/semantics/openAccessoai:zaguan.unizar.es:1211792026-05-29T13:59:51Z
dc.title.none.fl_str_mv Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
title Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
spellingShingle Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
Bergua, Fernando
title_short Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
title_full Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
title_fullStr Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
title_full_unstemmed Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
title_sort Thymol+l-menthol eutectic mixtures: Thermophysical properties and possible applications as decontaminants
dc.creator.none.fl_str_mv Bergua, Fernando
Castro, Miguel
Lafuente, Carlos
Artal, Manuela
author Bergua, Fernando
author_facet Bergua, Fernando
Castro, Miguel
Lafuente, Carlos
Artal, Manuela
author_role author
author2 Castro, Miguel
Lafuente, Carlos
Artal, Manuela
author2_role author
author
author
description The substitution of conventional organic solvents for others with less environmental impact is one of the basic premises of green chemistry. To carry this out optimally, tools based on the similarity of thermophysical behaviour are being developed. Thus, the characterization of new solvents is a key step in any field of application. In this work, we studied the eutectic hydrophobic thymol + l-menthol system. The solid–liquid equilibrium of the system and several properties of three of its mixtures close to eutectic composition were measured and discussed. Calculations and correlations were performed to obtain properties of interest such as the internal pressure, critical temperature, and solubility parameter, among others. To predict the system behaviour under any operating conditions, the PC-SAFT equation of state was validated. Considering the problem of the presence of drugs as micro pollutants in the environment, the ability of this eutectic system to both dissolve drugs and remove them from contaminated water was also analysed. The results showed a strong thymol-l-menthol interaction, and a higher thymol ratio made the liquid more compact and structured but less polar and viscous. The difference in densities with respect to that of water and the moderate viscosity values indicated that this system can be an adequate solvent in liquid–liquid extraction processes. The solubilities of quercetin (), nitrofurantoin () and tetracycline () were enhanced in the eutectic mixtures; for , the solubility was 10000-fold higher than that in water. Finally, this system could be used to remove traces of and from the water, with an efficiency of up to 81 %.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/121179
url http://zaguan.unizar.es/record/121179
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/DGA/E31-20R
info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón
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
publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
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score 15,300719

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