dc.creator | Lazarević, Slavica | |
dc.creator | Janković-Častvan, Ivona | |
dc.creator | Potkonjak, Branislav | |
dc.creator | Janaćković, Đorđe | |
dc.creator | Petrović, Rada | |
dc.date.accessioned | 2021-03-10T11:57:13Z | |
dc.date.available | 2021-03-10T11:57:13Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0255-2701 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2237 | |
dc.description.abstract | The efficiency of iron-functionalized sepiolite for the removal of Co2+ ions from aqueous solutions was determined under different experimental conditions, using the batch method. The ionization constants of the surface functional groups of the sepiolite-iron system, determined from potentiometric titration data, were pK(a1)(int) = 6.7 +/- 0.1 and pK(a2)(int) = 10.2 +/- 0.1. The sorption experiments were performed as a function of initial metal concentration, initial pH value, and the equilibration time. The equilibrium process was well described by the Langmuir isotherm model. The pseudo-second order kinetic model provides the best correlation of the experimental kinetic data. The iron-sepiolite system had a noticeably higher Co2+ sorption capacity than the natural sepiolite sample as a result of higher specific sorption and a higher ion exchange capacity. | en |
dc.publisher | Elsevier Science Sa, Lausanne | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS// | |
dc.relation | EUREKA E!4141 | |
dc.rights | restrictedAccess | |
dc.source | Chemical Engineering and Processing-Process Intensification | |
dc.subject | Iron-functionalized sepiolite | en |
dc.subject | Sorption | en |
dc.subject | Cobalt | en |
dc.subject | Kinetics | en |
dc.subject | Ionization constants | en |
dc.title | Removal of Co2+ ions from aqueous solutions using iron-functionalized sepiolite | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 47 | |
dc.citation.other | 55: 40-47 | |
dc.citation.rank | M21 | |
dc.citation.spage | 40 | |
dc.citation.volume | 55 | |
dc.identifier.doi | 10.1016/j.cep.2012.01.004 | |
dc.identifier.scopus | 2-s2.0-84859509608 | |
dc.identifier.wos | 000303964600006 | |
dc.type.version | publishedVersion | |