Uranium removal from aqueous solution using macauba endocarp-derived biochar

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dc.contributor.authorGUILHEN, SABINE N.pt_BR
dc.contributor.authorROVANI, SUZIMARApt_BR
dc.contributor.authorARAUJO, LEANDRO G. dept_BR
dc.contributor.authorTENORIO, JORGE A.S.pt_BR
dc.contributor.authorMASEK, ONDREJpt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2021-03-22T15:16:21Z
dc.date.available2021-03-22T15:16:21Z
dc.date.issued2021pt_BR
dc.description.abstractThe main aim of this study was to evaluate options for addressing two pressing challenges related to environmental quality and circular economy stemming from wastage or underutilization of abundant biomass residue resources and contamination of water by industrial effluents. In this study we focused on residues (endocarp) from Macaúba palm (Acrocomia aculeata) used for oil production, its conversion to activated biochar, and its potential use in uranium (U) removal from aqueous solutions. Batch adsorption experiments showed a much higher uranyl ions (U(VI)) removal efficiency of activated biochar compared to untreated biochar. As a result of activation, an increase in removal efficiency from 80.5% (untreated biochar) to 99.2% (after activation) was observed for a 5 mg L 1 initial U(VI) concentration solution adjusted to pH 3 using a 10 g L 1 adsorbent dosage. The BET surface area increased from 0.83 to 643 m2 g 1 with activation. Surface topography of the activated biochar showed a very characteristic morphology with high porosity. Activation significantly affected chemical surface of the biochar. FTIR analysis indicated that U(VI) was removed by physisorption from the aqueous solution. The adsorbed U(VI) was detected by micro X-ray fluorescence technique. Adsorption isotherms were employed to represent the results of the U adsorption onto the activated biochar. An estimation of the best fit was performed by calculating different deviation equations, also called error functions. The Redlich-Peterson isotherm model was the most appropriate for fitting the experimental data, suggesting heterogeneity of adsorption sites with different affinities for uranium setting up as a hybrid adsorption. These results demonstrated that physical activation significantly increases the adsorption capacity of macauba endocarp-derived biochar for uranium in aqueous solutions, and therefore open up a potential new application for this type of waste-derived biochar.pt_BR
dc.format.extent1-10pt_BR
dc.identifier.citationGUILHEN, SABINE N.; ROVANI, SUZIMARA; ARAUJO, LEANDRO G. de; TENORIO, JORGE A.S.; MASEK, ONDREJ. Uranium removal from aqueous solution using macauba endocarp-derived biochar: effect of physical activation. <b>Environmental Pollution</b>, v. 272, p. 1-10, 2021. DOI: <a href="https://dx.doi.org/10.1016/j.envpol.2020.116022">10.1016/j.envpol.2020.116022</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/31931.
dc.identifier.doi10.1016/j.envpol.2020.116022pt_BR
dc.identifier.issn0269-7491pt_BR
dc.identifier.orcid0000-0002-7802-1050pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2604-1225
dc.identifier.percentilfi90.14pt_BR
dc.identifier.percentilfiCiteScore94.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31931
dc.identifier.vol272pt_BR
dc.relation.ispartofEnvironmental Pollutionpt_BR
dc.rightsopenAccesspt_BR
dc.subjectaqueous solutions
dc.subjectvegetable oils
dc.subjectvegetables
dc.subjectcoconuts
dc.subjecturanium
dc.subjectadsorption
dc.subjectchemical activation
dc.subjectactivated carbon
dc.subjectcharcoal
dc.titleUranium removal from aqueous solution using macauba endocarp-derived biocharpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorSUZIMARA ROVANI
ipen.autorLEANDRO GOULART DE ARAUJO
ipen.autorSABINE NEUSATZ GUILHEN
ipen.codigoautor14256
ipen.codigoautor10132
ipen.codigoautor5931
ipen.contributor.ipenauthorSUZIMARA ROVANI
ipen.contributor.ipenauthorLEANDRO GOULART DE ARAUJO
ipen.contributor.ipenauthorSABINE NEUSATZ GUILHEN
ipen.date.recebimento21-03
ipen.identifier.fi9.988pt_BR
ipen.identifier.fiCiteScore12.7
ipen.identifier.ipendoc27702pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.identifier.ods6
ipen.range.fi6.000 ou mais
ipen.range.percentilfi75.00 - 100.00
ipen.subtituloeffect of physical activationpt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication2eb5afc8-335f-4d88-bc5f-7b4a4a4b079f
relation.isAuthorOfPublicationa0d4f881-138c-4443-9866-dc80ec84a861
relation.isAuthorOfPublicationc3932232-0001-4122-bc0e-9109d11f8bec
relation.isAuthorOfPublication.latestForDiscoveryc3932232-0001-4122-bc0e-9109d11f8bec
sigepi.autor.atividadeARAUJO, LEANDRO G. de:10132:1120:Npt_BR
sigepi.autor.atividadeROVANI, SUZIMARA:14256:510:Npt_BR
sigepi.autor.atividadeGUILHEN, SABINE N.:5931:510:Spt_BR
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