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Removal of metformin from aquatic matrices using cork-based adsorbents

2025Documento de conferência Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.fosEngenharia e Tecnologia::Biotecnologia Industrial
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorMorizaki, Gabrielle Tokawa
dc.contributor.authorGomes, Maria Carolina Sérgi
dc.contributor.authorQueiroz, Ana
dc.contributor.authorBrito, Paulo
dc.contributor.authorRibeiro, António E.
dc.date.accessioned2026-03-16T09:41:41Z
dc.date.available2026-03-16T09:41:41Z
dc.date.issued2025
dc.description.abstractAnthropogenic activities associated with industrial development, urbanization, and population growth have significantly contributed to the presence of various pollutants in aquatic environments. Among these contaminants, emerging micropollutants have raised considerable concern. The detection and quantification of these substances require advanced analytical techniques due to their occurrence at extremely low concentrations (μg/L to ng/L). These pollutants pose substantial environmental and human health risks, particularly pharmaceuticals. Metformin, a pharmaceutical prescribed for the treatment of type 2 diabetes, is increasingly detected in aquatic environments due to its incomplete metabolism and widespread prescription. Some studies indicate that metformin can stimulate the expression of genes associated with endocrine hormone pathways, while its chlorinated byproducts in drinking water exhibit toxic effects on aquatic ecosystems. Several treatment strategies have been investigated for removing pharmaceuticals from wastewater, with adsorption emerging as a practical approach. Activated carbons, particularly those derived from renewable biomass such as cork, have gained attention due to their high efficiency and cost-effectiveness in the removal of organic pollutants from wastewater. The present study investigates the efficiency of metformin removal from aqueous matrices using cork- based adsorbent materials. The proposed methodology encompasses the production of adsorbents via physical and chemical activation. The physical activation involved the carbonization of cork at 550°C for 1 hour. In contrast, the chemical activation comprised a pre-carbonization step at 550°C for 1 hour and impregnation with KOH at a 1:5 ratio (biochar: KOH). The impregnated material was then carbonized at 750°C for 1 hour. The characterization of the adsorbents includes calculation of carbonization yield, determination of the point of zero charge (pHpzc), analysis of acidic and basic surface sites, FTIR, TGA and BET. Kinetic and equilibrium adsorption studies will be carried out later. For this purpose, a metformin quantification method using HPLC was developed.eng
dc.description.sponsorshipThis work was supported by national funds through FCT/MCTES (PIDDAC): UIDB/00690/2020 (DOI:10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); and SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020).
dc.identifier.citationMorizaki, Gabrielle Tokawa; Gomes, Maria Carolina Sérgi; Queiroz, Ana; Brito, Paulo; Ribeiro, António E. (2025). Removal of metformin from aquatic matrices using cork-based adsorbents. In 9PYCheM – 9th Portuguese Young Chemists Meeting. Faro. ISBN 978-989-8124-46-3
dc.identifier.isbn978-989-8124-46-3
dc.identifier.urihttp://hdl.handle.net/10198/36074
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSociedade Portuguesa de Química
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMetformin
dc.subjectAdsorbents
dc.titleRemoval of metformin from aquatic matrices using cork-based adsorbentseng
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumberUIDB/00690/2020
oaire.awardNumberUIDP/00690/2020
oaire.awardNumberLA/P/0007/2020
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.citation.conferenceDate2025
oaire.citation.conferencePlaceFaro
oaire.citation.endPage55
oaire.citation.startPage55
oaire.citation.title9PYCheM – 9th Portuguese Young Chemists Meeting
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameQueiroz
person.familyNameBrito
person.familyNameRibeiro
person.givenNameAna
person.givenNamePaulo
person.givenNameAntónio E.
person.identifier.ciencia-id2611-D40C-3472
person.identifier.ciencia-idA31A-D845-A6E2
person.identifier.ciencia-id3211-D5B0-870D
person.identifier.orcid0000-0003-4761-0618
person.identifier.orcid0000-0003-1805-0252
person.identifier.orcid0000-0003-4569-7887
person.identifier.ridO-8367-2015
person.identifier.scopus-author-id31168231800
person.identifier.scopus-author-id23390701300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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