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Tailored cellulose-based flocculants for microplastics removal: mechanistic insights, pH influence, and efficiency optimization

2025-04Journal article Open access
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dc.contributor.authorMagalhães, Solange
dc.contributor.authorNorgren, Magnus
dc.contributor.authorAlves, Luís
dc.contributor.authorMedronho, Bruno
dc.contributor.authorRasteiro, Maria da Graça
dc.date.accessioned2025-03-19T13:25:00Z
dc.date.available2025-03-19T13:25:00Z
dc.date.issued2025-04
dc.description.abstractThis study explores the performance of novel cellulose-derived sustainable flocculants in the flocculation of different model microplastics (MPs), including polyethylene (PE), polyethylene terephthalate (PET) and polyvinyl chloride (PVC). The influence of key parameters, such as pH, flocculant structure and concentration was evaluated by Laser Diffraction Spectroscopy (LDS) and optical microscopy to access their effects on flocculation performance, kinetics and floc structure. The results reveal that a bioflocculant concentration of 0.001 g & sdot;mL- 1 is ideal for effective flocculation, as lower concentrations lead to insufficient floc growth. While electrostatic interactions are a dominant factor in the flocculation process, the study also highlights the role of hydrophobic interactions, its contribution depending on the characteristics of the MPs. Overall, this research highlights the importance of understanding the key interactions governing the flocculation process. It further paves the way for designing and fine-tuning cellulose-based flocculants with improved efficiency and optimized dosages for effective MPs removal strategies.eng
dc.description.sponsorshipCEECIND/01014/2018;
dc.identifier.doi10.1016/j.powtec.2025.120838
dc.identifier.issn0032-5910
dc.identifier.urihttp://hdl.handle.net/10400.1/26928
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationMaking water cleaner: Development of novel lignocellulose-based systems for the removal of microplastics from aqueous media
dc.relationFrom Forest to Crops: Development of sustainable bio-based emulsifiers and fungicides for crops protection.
dc.relationMediterranean Institute for Agriculture, Environment and Development
dc.relationCHANGE - Global Change and Sustainability Institute
dc.relationChemical Process Engineering and Forest Products Research Centre
dc.relation.ispartofPowder Technology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectBio-based flocculants
dc.subjectMicroplastics
dc.subjectCellulose derivatives
dc.subjectLDS
dc.subjectElectrostatic and hydrophobic interactions
dc.titleTailored cellulose-based flocculants for microplastics removal: mechanistic insights, pH influence, and efficiency optimizationeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMaking water cleaner: Development of novel lignocellulose-based systems for the removal of microplastics from aqueous media
oaire.awardTitleFrom Forest to Crops: Development of sustainable bio-based emulsifiers and fungicides for crops protection.
oaire.awardTitleMediterranean Institute for Agriculture, Environment and Development
oaire.awardTitleCHANGE - Global Change and Sustainability Institute
oaire.awardTitleChemical Process Engineering and Forest Products Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//2020.07638.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND4ed/2021.00399.CEECIND%2FCP1656%2FCT0025/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F05183%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0121%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00102%2F2020/PT
oaire.citation.startPage120838
oaire.citation.titlePowder Technology
oaire.citation.volume456
oaire.fundingStreamCEEC IND4ed
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMedronho
person.givenNameBruno
person.identifier.ciencia-id6918-9AB3-8D22
person.identifier.orcid0000-0003-0972-1739
person.identifier.ridP-5927-2014
person.identifier.scopus-author-id9940656700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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