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Highly efficient porous carbons for the removal of W(VI) oxyanion from wastewaters

2021-06Journal article Open access
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dc.contributor.authorDias, Diogo
dc.contributor.authorDon, Davide
dc.contributor.authorJandosov, Jakpar
dc.contributor.authorBernardo, Maria
dc.contributor.authorPinto, Filomena
dc.contributor.authorFonseca, Isabel Maria
dc.contributor.authorSanches, André
dc.contributor.authorCaetano, P. S.
dc.contributor.authorLyubchyk, Svitlana
dc.contributor.authorLapa, Nuno
dc.date.accessioned2021-12-14T11:32:46Z
dc.date.available2021-12-14T11:32:46Z
dc.date.issued2021-06
dc.description.abstractABSTRACT: Pyrolysis chars derived from rice wastes were chemically activated and used in W(VI) oxyanion adsorption assays in synthetic and mining wastewaters. For comparison purposes, a commercial activated carbon (CAC) was also used. Different experimental conditions were tested in the adsorption assays: solid/liquid ratio (S/L), initial pH, contact time, and initial W concentration. The porous carbon P2C+KOH presented the overall best performance in both media, due to its high surface area (2610 m2 g-1), mesopore volume (1.14 cm3 g-1), and neutral pHpzc (6.92). In the synthetic wastewater, the highest uptake capacity of P2C+KOH (854 mg g-1) was found in the assays with an S/L 0.1 g L-1, an initial pH 2, and an initial W concentration of 150 mg L-1, for 24 h. This value was almost 8 times higher than the one obtained for CAC (113 mg g-1). In the mining wastewater, P2C+KOH showed an even higher uptake capacity (1561 mg g-1) in the assay with the same experimental conditions, which was almost 3 times higher than for CAC (561 mg g-1). These results suggest that P2C+KOH seems to be an efficient alternative to CAC in the W(VI) adsorption from liquid effluents.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDias, Diogo... [et.al.] - Highly efficient porous carbons for the removal of W(VI) oxyanion from wastewaters. In: Journal of Hazardous Materials, 2021, Vol. 412, article nº 125201pt_PT
dc.identifier.doi10.1016/j.jhazmat.2021.125201pt_PT
dc.identifier.eissn1873-3336
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/10400.9/3631
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationFCOMP-01-0124-FEDER-027827pt_PT
dc.relationNanoMed - grant agreement: 734641pt_PT
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationRecuperação de metais com elevado valor comercial através da adsorção por carbonizados provenientes de resíduos da cultura do arroz Rice2Metal
dc.relationGeoBioSciences GeoTechnologies and GeoEngineering
dc.relation.publisherversionhttps://doi.org/10.1016/j.jhazmat.2021.125201pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectRice wastespt_PT
dc.subjectWastewater treatmentpt_PT
dc.subjectPyrolysispt_PT
dc.subjectTungstenpt_PT
dc.subjectAdsorptionpt_PT
dc.subjectActivated carbonspt_PT
dc.titleHighly efficient porous carbons for the removal of W(VI) oxyanion from wastewaterspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleRecuperação de metais com elevado valor comercial através da adsorção por carbonizados provenientes de resíduos da cultura do arroz Rice2Metal
oaire.awardTitleGeoBioSciences GeoTechnologies and GeoEngineering
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PTDC%2FAAG-REC%2F3477%2F2012/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F101751%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04035%2F2020/PT
oaire.citation.titleJournal of Hazardous Materialspt_PT
oaire.citation.volume412pt_PT
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oaire.fundingStream6817 - DCRRNI ID
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person.familyNameDias
person.familyNameDon
person.familyNameBernardo
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person.familyNameLapa
person.givenNameDiogo
person.givenNameDavide
person.givenNameMaria
person.givenNameFilomena
person.givenNameAndré
person.givenNameSvitlana
person.givenNameNuno
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project.funder.nameFundação para a Ciência e a Tecnologia
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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