Iron-Modified Sepiolite for Ni2+ Sorption from Aqueous Solution: An Equilibrium, Kinetic, and Thermodynamic Study
dc.creator | Lazarević, Slavica | |
dc.creator | Janković-Častvan, Ivona | |
dc.creator | Đokić, Veljko | |
dc.creator | Radovanović, Željko | |
dc.creator | Janaćković, Đorđe | |
dc.creator | Petrović, Rada | |
dc.date.accessioned | 2021-03-10T11:24:08Z | |
dc.date.available | 2021-03-10T11:24:08Z | |
dc.date.issued | 2010 | |
dc.identifier.issn | 0021-9568 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1717 | |
dc.description.abstract | Sepiolite was used for the synthesis of the sepiolite-iron oxide system to obtain a sorbent suitable for the removal of Ni2+ from aqueous solution. The modified material, Fe-sepiolite, was characterized by X-ray diffraction analysis, Fourier transform infrared spectroscopy, differential thermal/thermogravimetric analysis, and point of zero charge (pH(pzc)) determination. The sorption experiments were performed as a function of the initial metal concentration, equilibration time, and temperature using the batch method. The Fe-sepiolite had a higher sorption capacity than the natural sepiolite sample due to a higher specific sorption and a higher ion exchange with Mg2+ ions from the sepiolite surface. Thermodynamic parameters, such as enthalpy, Gibbs energy, and entropy, were calculated from the temperature-dependent sorption isotherms, and these values showed that the sorption of Ni2+ onto sepiolites was endothermic. Pseudo-second-order kinetic models provide the best correlation of the experimental kinetic data. | en |
dc.publisher | Amer Chemical Soc, Washington | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142070/RS// | |
dc.relation | EUREKA E!4141 | |
dc.rights | restrictedAccess | |
dc.source | Journal of Chemical and Engineering Data | |
dc.title | Iron-Modified Sepiolite for Ni2+ Sorption from Aqueous Solution: An Equilibrium, Kinetic, and Thermodynamic Study | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 5689 | |
dc.citation.issue | 12 | |
dc.citation.other | 55(12): 5681-5689 | |
dc.citation.rank | M21 | |
dc.citation.spage | 5681 | |
dc.citation.volume | 55 | |
dc.identifier.doi | 10.1021/je100639k | |
dc.identifier.scopus | 2-s2.0-78650297104 | |
dc.identifier.wos | 000285216300044 | |
dc.type.version | publishedVersion |