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Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite
dc.creator | Rajić, Nevenka | |
dc.creator | Stojaković, Đorđe | |
dc.creator | Jovanović, Mina | |
dc.creator | Zabukovec-Logar, Nataša | |
dc.creator | Mazaj, Matjaz | |
dc.creator | Kaučič, Venčeslav | |
dc.date.accessioned | 2021-03-10T11:24:44Z | |
dc.date.available | 2021-03-10T11:24:44Z | |
dc.date.issued | 2010 | |
dc.identifier.issn | 0169-4332 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1726 | |
dc.description.abstract | The natural zeolite tuff (clinoptilolite) from a Serbian deposit has been studied as adsorbent for Ni(II) ions from aqueous solutions. Its sorption capacity at 298K varies from 1.9mg Nig(-1) (for the initial solution concentration of 100mg Nidm(-3)) to 3.8mg Nig(-1) (for C-0 = 600mgNidm(-3)) and it increases 3 times at 338 K. The sorption is best described by the Sips isotherm model. The sorption kinetics follows the pseudo-second-order model, the activation energies being 7.44, 5.86, 6.62 and 6.63 kJ mol(-1) for C-0 = 100, 200, 300 and 400mg Nidm(-3), respectively. The sorption involves a film diffusion, an intra-particle diffusion, and a chemical cation-exchange between the Na+ ions of clinoptilolite and the Ni2+ ions. The sorption is endothermic (Delta H degrees being 37.9, 33.4, 30.0, 27.7 and 24.3 kJ mol(-1) for C-0 = 100, 200, 300, 400 and 600mg Nidm(-3), respectively) and spontaneous in the 298-338K temperature range. Thermal treatment of the Ni(II)-loaded clinoptilolite results in the formation of spherical nano-NiO particles of approx. 5 nm in diameter which are randomly dispersed in the clinoptilolite lattice. | en |
dc.publisher | Elsevier Science Bv, Amsterdam | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142055/RS// | |
dc.relation | Eureka Project [E14208] | |
dc.rights | restrictedAccess | |
dc.source | Applied Surface Science | |
dc.subject | Clinoptilolite | en |
dc.subject | Nickel removal | en |
dc.subject | Kinetics | en |
dc.subject | Nano-oxide | en |
dc.subject | Ion-exchange | en |
dc.title | Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 1532 | |
dc.citation.issue | 5 | |
dc.citation.other | 257(5): 1524-1532 | |
dc.citation.rank | M22 | |
dc.citation.spage | 1524 | |
dc.citation.volume | 257 | |
dc.identifier.doi | 10.1016/j.apsusc.2010.08.090 | |
dc.identifier.scopus | 2-s2.0-78049303035 | |
dc.identifier.wos | 000283349200028 | |
dc.type.version | publishedVersion |