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Physicochemical Characterisation of Olive Mill Wastewaters Based on Extraction Methods and Filtration Levels

2025Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia do Ambiente
datacite.subject.fosCiências Agrárias::Outras Ciências Agrárias
datacite.subject.sdg06:Água Potável e Saneamento
datacite.subject.sdg12:Produção e Consumo Sustentáveis
datacite.subject.sdg13:Ação Climática
dc.contributor.authorAfonso, Inês Santos
dc.contributor.authorDuarte, Cristina
dc.contributor.authorAfonso, Maria João A.P.S.
dc.contributor.authorRibeiro, António E.
dc.contributor.authorAmaral, Joana S.
dc.contributor.authorSousa, Patrícia C.
dc.contributor.authorLima, Rui A.
dc.contributor.authorRibeiro, João E.
dc.date.accessioned2025-11-07T14:59:13Z
dc.date.available2025-11-07T14:59:13Z
dc.date.issued2025
dc.description.abstractOlive mill wastewaters (OMWW) generated during olive oil extraction represent a significant environmental challenge due to their high organic matter content, acidic pH, phenolic content, and toxicity. Their composition varies widely depending on the extraction method and remains difficult to treat, particularly for small-scale producers lacking access to complex infrastructure. This study evaluates the combined effect of the extraction system (traditional vs. three-phase continuous) and filtration level (single vs. double) on the physicochemical and biological properties of OMWW. The methodologies employed included the analysis of water content, density, fatty acid composition, acidity, pH, total solids, chemical and biochemical oxygen demand, and biodegradability. The results indicate that traditional systems consistently produced OMWW with higher organic matter and phenolic loads, while filtration moderately reduced antioxidant potential and acidity, especially in traditional systems. The use of simple, low-cost filtration materials proved effective in improving effluent clarity and could serve as a practical pre-treatment option. This approach offers an accessible strategy for small producers aiming to valorise OMWW or reduce environmental impact. However, the study was conducted at the laboratory scale, and the long-term behaviour of filtered OMWW under real operating conditions remains to be evaluated.eng
dc.description.sponsorshipThis research was partially funded through the base funding from the project CMFPE3; EXPL2021CIMO_01 (OliveWasteWater4MWFs) supported by CIMO, Centro de Investigação de Montanha, based in Instituto Politécnico de Bragança, Bragança, Portugal. National funds also supported this work through FCT/MCTES (PIDDAC): CIMO, 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); UIDB/04077/2020 (Mechanical Engineering and Resource Sustainability Center (MEtRICs)), UIDB/00532/2020 and LA/P/0045/2020 (ALiCE). Inês S. Afonso was supported by the doctoral grant 2024.05919.BDANA, financed by the Portuguese Foundation for Science and Technology (FCT).
dc.identifier.citationAfonso, Inês Santos; Duarte, Cristina; Afonso, Maria João A.P.S; Ribeiro, António E.; Amaral, Joana S.; Sousa, Patrícia C.; Lima, Rui A.; Ribeiro, João E. (2025). Physicochemical Characterisation of Olive Mill Wastewaters Based on Extraction Methods and Filtration Levels. Clean Technologies and Environmental Policy. ISSN 2571-8797. 7:3, p. 1-19
dc.identifier.doi10.3390/cleantechnol7030073
dc.identifier.issn2571-8797
dc.identifier.urihttp://hdl.handle.net/10198/34997
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relationTransport Phenomena Research Center
dc.relationALICE - Associate Laboratory in Chemical Engineering
dc.relation.ispartofClean Technologies
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectOlive mill wastewaters
dc.subjectFiltration levels
dc.subjectTraditional extraction methods
dc.subjectContinuous extraction methods
dc.subjectSustainable waste management
dc.titlePhysicochemical Characterisation of Olive Mill Wastewaters Based on Extraction Methods and Filtration Levelseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleMechanical Engineering and Resource Sustainability Center
oaire.awardTitleTransport Phenomena Research Center
oaire.awardTitleALICE - Associate Laboratory in Chemical Engineering
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
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0045%2F2020/PT
oaire.citation.endPage19
oaire.citation.issue3
oaire.citation.startPage1
oaire.citation.titleClean Technologies
oaire.citation.volume7
oaire.fundingStream6817 - DCRRNI ID
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oaire.fundingStream6817 - DCRRNI ID
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oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
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person.givenNameInês Santos
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person.givenNameMaria João A.P.S.
person.givenNameAntónio E.
person.givenNameJoana S.
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person.identifier.ciencia-id5319-7DE8-BEDA
person.identifier.gsidhttps://scholar.google.com/citations?user=FgE3QF4AAAAJ&hl=pt-PT
person.identifier.orcid0000-0001-6416-2867
person.identifier.orcid0000-0001-5421-3261
person.identifier.orcid0000-0002-2569-9896
person.identifier.orcid0000-0003-4569-7887
person.identifier.orcid0000-0002-3648-7303
person.identifier.scopus-author-idhttps://www.scopus.com/authid/detail.uri?authorId=57880904400
person.identifier.scopus-author-id23390701300
project.funder.identifierhttp://doi.org/10.13039/501100001871
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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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