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Seaweed-derived biochar for effective treatment of dye-contaminated wastewater

2025-04-18Journal article Open access
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dc.contributor.authorDias, Ana Paula Soares
dc.contributor.authorSantos, Francisco Ascenção
dc.contributor.authorRijo, Bruna
dc.contributor.authorSimes, Dina
dc.contributor.authorPereira, Leonel
dc.contributor.authorPereira, Manuel Francisco Costa
dc.date.accessioned2025-05-23T10:29:49Z
dc.date.available2025-05-23T10:29:49Z
dc.date.issued2025-04-18
dc.description.abstractFreshwater scarcity is a growing concern, exacerbated by industrial effluents containing dyes and other pollutants that endanger aquatic ecosystems. This study explores the potential of biochar sorbents, derived from renewable seaweed biomass, as a sustainable solution for water decontamination. Seaweed biomass (sarga & ccedil;o), collected from Portuguese seashores, was carbonized at 300 degrees C and 400 degrees C to produce biochar. Adsorption experiments with methylene blue (MB) revealed that carbonization at 400 degrees C, followed by ball milling, significantly enhanced adsorption performance. Langmuir isotherm analysis demonstrated a maximum adsorption capacity of 500 mg MB/g sorbent for the optimized biochar (400 degrees C, ball milled), with adsorption efficiency improving at elevated temperatures and pH levels up to 12. Infrared reflectance spectra of fresh and post-adsorption biochars confirmed the involvement of pi-pi interactions and hydrogen bonding in the adsorption mechanism. These findings highlight the potential of seaweed-derived biochar as an effective and eco-friendly solution for water purification.eng
dc.description.sponsorshipFCT-UIDB/04028/2025; FCT-UIDP/04028/2025
dc.identifier.doi10.3390/w17081215
dc.identifier.issn2073-4441
dc.identifier.urihttp://hdl.handle.net/10400.1/27159
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationResearch Center for Endogenous Resource Valorization
dc.relation.ispartofWater
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectWastewater treatment
dc.subjectDye removal
dc.subjectBiochar
dc.subjectSeaweed biomass
dc.subjectCarbonization
dc.titleSeaweed-derived biochar for effective treatment of dye-contaminated wastewatereng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleResearch Center for Endogenous Resource Valorization
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F05064%2F2020/PT
oaire.citation.issue8
oaire.citation.startPage1215
oaire.citation.titleWater
oaire.citation.volume17
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameSimes
person.givenNameDina
person.identifier.orcid0000-0002-5145-4753
person.identifier.ridN-2789-2014
person.identifier.scopus-author-id7201884723
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication31bac96d-1d01-4b8f-8f2b-9da4be31ea41
relation.isAuthorOfPublication.latestForDiscovery31bac96d-1d01-4b8f-8f2b-9da4be31ea41
relation.isProjectOfPublicationd82a6f4a-5edf-4001-851f-0706ade8ae45
relation.isProjectOfPublication.latestForDiscoveryd82a6f4a-5edf-4001-851f-0706ade8ae45

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