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dc.creatorŠljivić-Ivanović, Marija Z.
dc.creatorSmičiklas, Ivana D.
dc.creatorMilenkovic, A.
dc.creatorDojčinović, Biljana P.
dc.creatorBabić, Biljana M.
dc.creatorMitrić, Miodrag
dc.date.accessioned2018-03-01T15:29:57Z
dc.date.available2018-03-01T15:29:57Z
dc.date.issued2015
dc.identifier.issn0022-2461 (print)
dc.identifier.issn1573-4803 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/214
dc.description.abstractAnimal bones have been studied as a resource of low-crystalline apatite for immobilization of toxic heavy metals. Chemical and thermal treatments can be applied for selective removal of bone organic constituents. In this study, the impact of different treatment factors was determined by experimental design methodology, and comparison of the estimated effects was performed in order to optimize the treatment conditions. Fractional factorial design with five variables at two levels was applied for factors screening. The type of chemical reagent (H2O2 or NaOH), its concentration (0.1 or 2 mol/L), reaction temperature (20 or 60 degrees C), contact time (1 or 3 h) and sample annealing (without or at 400 degrees C) were considered as process variables. Structural properties of bone sorbents, loss of ignition, point of zero charge, surface functional groups, specific surface area, chemical composition, and Cd2+ sorption efficiency, were selected as system responses. Samples significantly differed in respect to the organic phase content and composition, thus mechanisms of Cd2+ sorption were complex. Statistical analysis has revealed that, between all studied factors, temperature treatment was the most important for sorbents increased specific surface area, porosity and cation sorption. Furthermore, NaOH was more effective than H2O2, while the effects produced by variation of other factors were less pronounced. The highest proportion of bio-apatite with desired low crystallinity and high specific surface area was achieved by synergetic effects of chemical treatment with NaOH and thermal treatment at 400 degrees C.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS//
dc.rightsrestrictedAccessen
dc.sourceJournal of Materials Scienceen
dc.titleEvaluation of the effects of treatment factors on the properties of bio-apatite materialsen
dc.typearticleen
dcterms.abstractМитрић Миодраг; Смициклас Ивана; Шљивић-Ивановић Марија; Миленковиц, A.; Дојциновиц, Б.; Бабиц, Б.;
dc.citation.volume50
dc.citation.issue1
dc.citation.spage354
dc.citation.epage365
dc.identifier.wos000345077000036
dc.identifier.doi10.1007/s10853-014-8594-4
dc.citation.rankM21
dc.identifier.scopus2-s2.0-84919918409


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