dc.creator | Lazarević, Slavica | |
dc.creator | Janković-Častvan, Ivona | |
dc.creator | Tanasković, Dušanka | |
dc.creator | Pavićević, Vladimir | |
dc.creator | Janaćković, Đorđe | |
dc.creator | Petrović, Rada | |
dc.date.accessioned | 2021-03-10T10:52:57Z | |
dc.date.available | 2021-03-10T10:52:57Z | |
dc.date.issued | 2008 | |
dc.identifier.issn | 0733-9372 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1240 | |
dc.description.abstract | The sorption of Pb2+, Cd2+, and Sr2+ ions from aqueous solutions by carbonate-substituted calcium hydroxyapatite (HAP) obtained by the hydrothermal decomposition of urea and calcium-ethylenediaminetetraacetic acid chelates was investigated. The shift of the point of zero charge (pH(pzc)) of HAP toward lower pH values in solutions of Pb2+ and Cd2+ ions, which was more pronounced for Pb2+ ions than for Cd2+ ions, indicates that specific adsorption of these cations on HAP had occurred. There was no shift of the pH(pzc) in the solution containing Sr2+ ions, suggesting that specific adsorption of this cation on HAP had not occurred. The sorption isotherms suggest that the sequence of the efficiency of sorption by HAP is Pb2+ gt Cd2+ gt Sr2+. Ion exchange is the main mechanism of removal of Sr2+ ions from aqueous solution by apatite, whereas during the sorption of Cd2+ ions, this mechanism occurs simultaneously with the process of specific adsorption. The interaction of the apatite with Pb2+ ions includes the previously mentioned mechanisms and dissolution of the apatite, followed by the precipitation of lead hydroxyapatite. | en |
dc.publisher | Asce-Amer Soc Civil Engineers, Reston | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142070/RS// | |
dc.rights | restrictedAccess | |
dc.source | Journal of Environmental Engineering | |
dc.subject | Sorption | |
dc.subject | Ion exchange | |
dc.subject | Metals | |
dc.subject | Water qualit | |
dc.title | Sorption of Pb2+, Cd2+, and Sr2+ ions on calcium hydroxyapatite powder obtained by the hydrothermal method | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 688 | |
dc.citation.issue | 8 | |
dc.citation.other | 134(8): 683-688 | |
dc.citation.rank | M21 | |
dc.citation.spage | 683 | |
dc.citation.volume | 134 | |
dc.identifier.doi | 10.1061/(ASCE)0733-9372(2008)134:8(683) | |
dc.identifier.scopus | 2-s2.0-47749095942 | |
dc.identifier.wos | 000257763500010 | |
dc.type.version | publishedVersion | |