High efficiency removal of As(III) from waters using a new and friendly adsorbent based on sugarcane bagasse and corncob husk Fe-coated biochars

dc.contributor.authorMontero, José Ignácio Z. [UNESP]
dc.contributor.authorMonteiro, Adnívia S.C. [UNESP]
dc.contributor.authorGontijo, Erik S.J. [UNESP]
dc.contributor.authorBueno, Carolina C. [UNESP]
dc.contributor.authorde Moraes, Minéia A. [UNESP]
dc.contributor.authorRosa, André H. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUFZ-Helmholtz Centre for Environmental Research
dc.date.accessioned2018-12-11T16:54:29Z
dc.date.available2018-12-11T16:54:29Z
dc.date.issued2018-10-30
dc.description.abstractWater contamination of As is a big issue in many areas around the globe. Therefore, cheap and efficient techniques are essential facing traditional treatment methods. Then, biochars (BC) emerged recently as material that can be used for As removal. However, research about efficiency of BC produced from local feedstock is still needed. The purpose of this study is to assess the efficiency of BC produced from sugarcane bagasse (SB) together with corncob husk (CH) with and without Fe(III) (BCFe) modification to be used for removal of As(III) from waters. The BC and BCFe produced at different pyrolysis temperatures were characterised using FTIR and SEM/EDS. Adsorption capacities of BC and BCFe were evaluated via batch adsorption, desorption and column tests and their performance was compared with adsorption using activated carbon. The results showed that Fe modification improve substantially the As(III) adsorption in a way that both BCFe-SB and BCFe-CH removed from 85% to 99.9% from 1000 µg/L As(III) solutions. Both materials fitted well in Langmuir model and the maximum adsorption capacity was 20 mg/g for BCFe-SB and 50 mg/g for BCFe-CH. The adsorption kinetics of BCFe was fast (≤ 30 min) and it had a better performance than activated carbon. The column tests showed that the process is efficient even at high As(III) concentrations. The fast removal process and good removal results make the BCFe-SB and BCFe-CH attractive for in situ and commercial (filters) use, since time and efficiency are required in new technologies.en
dc.description.affiliationSao Paulo State University (UNESP) Institute of Science and Technology, Av. Tres de Marco, 511, Alto da Boa Vista
dc.description.affiliationFederal University of Sergipe (UFS) Postgraduate Program in Water Resources, Av. Marechal Rondon, s/n - Jd. Rosa Elze
dc.description.affiliationUFZ-Helmholtz Centre for Environmental Research Department Lake Research, Brueckstr 3a
dc.description.affiliationUnespSao Paulo State University (UNESP) Institute of Science and Technology, Av. Tres de Marco, 511, Alto da Boa Vista
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 303189/2013-4
dc.format.extent616-624
dc.identifierhttp://dx.doi.org/10.1016/j.ecoenv.2018.07.042
dc.identifier.citationEcotoxicology and Environmental Safety, v. 162, p. 616-624.
dc.identifier.doi10.1016/j.ecoenv.2018.07.042
dc.identifier.file2-s2.0-85050161195.pdf
dc.identifier.issn1090-2414
dc.identifier.issn0147-6513
dc.identifier.scopus2-s2.0-85050161195
dc.identifier.urihttp://hdl.handle.net/11449/171230
dc.language.isoeng
dc.relation.ispartofEcotoxicology and Environmental Safety
dc.relation.ispartofsjr1,201
dc.relation.ispartofsjr1,201
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAdsorption
dc.subjectArsenic
dc.subjectKinetics parameters
dc.subjectModified biochars
dc.subjectWater treatment
dc.titleHigh efficiency removal of As(III) from waters using a new and friendly adsorbent based on sugarcane bagasse and corncob husk Fe-coated biocharsen
dc.typeArtigo
unesp.author.lattes5228846314663888[6]
unesp.author.orcid0000-0002-2042-018X[6]

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