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dc.creatorVeličković, Zlate
dc.creatorVuković, Goran D.
dc.creatorMarinković, Aleksandar
dc.creatorMoldovan, Maria-Simona
dc.creatorPerić-Grujić, Aleksandra
dc.creatorUskoković, Petar
dc.creatorRistić, Mirjana
dc.date.accessioned2021-03-10T11:55:00Z
dc.date.available2021-03-10T11:55:00Z
dc.date.issued2012
dc.identifier.issn1385-8947
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/2202
dc.description.abstractNew criteria in assessing the quality of drinking water reduced the maximum permissible concentration of arsenic from 50 mu g L-1 to 10 mu g L-1 and set a requirement for the development of new technologies for arsenic removal. In this paper, ethylenediamine functionalized multiwall carbon nanotubes (e-MWCNT) were loaded with iron(III) oxide in the goethite form, by precipitation of adsorbed Fe3+ and oxidized Fe2+ using base, in that way e-MWCNT/Fe3+ and e-MWCNT/Fe2+ adsorbents, respectively, were obtained. The influence of pH on the As(V) and As(III) removal from drinking water was studied in a batch system, of pH range 3-10 and initial arsenic concentration 0.05-4 mg L-1. Time dependent As(V) adsorption and adsorption data can be described by pseudo-second-order kinetic model and by Freundlich isotherm, applying linear and non-linear fitting methods. The maximum adsorption capacities obtained from Langmuir model for As(V) on e-MWCNT/Fe2+ and e-MWCNT/Fe3+ were 23.47 and 13.74 mg g(-1) at 25 degrees C. respectively. Thermodynamic parameters showed that the adsorption of As(V) was spontaneous and endothermic for both e-MWCNT/Fe2+ and e-MWCNT/Fe3+. Influences of the pH, iron(III) oxide loading and interfering ions were modeled by MINTEQ program, and good agreement between experimental and modeling data was obtained.en
dc.publisherElsevier Science Sa, Lausanne
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/245916/EU//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172007/RS//
dc.rightsrestrictedAccess
dc.sourceChemical Engineering Journal
dc.subjectArsenicen
dc.subjectMultiwall carbon nanotubesen
dc.subjectAmidationen
dc.subjectAdsorptionen
dc.subjectIron(III) oxideen
dc.titleAdsorption of arsenate on iron(III) oxide coated ethylenediamine functionalized multiwall carbon nanotubesen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage181
dc.citation.other181: 174-181
dc.citation.rankaM21
dc.citation.spage174
dc.citation.volume181
dc.identifier.doi10.1016/j.cej.2011.11.052
dc.identifier.rcubconv_3767
dc.identifier.scopus2-s2.0-84856334922
dc.identifier.wos000301087000018
dc.type.versionpublishedVersion


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