dc.creator | Savić, Andrija B. | |
dc.creator | Čokeša, Đuro | |
dc.creator | Savić-Biserčić, Marjetka | |
dc.creator | Janković-Častvan, Ivona | |
dc.creator | Petrović, Rada | |
dc.creator | Živković, Ljiljana | |
dc.date.accessioned | 2021-03-10T14:05:46Z | |
dc.date.available | 2021-03-10T14:05:46Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0921-8831 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4233 | |
dc.description.abstract | Natural filtration material tuff (T) was modified by coating with nano-sized magnetite. The grain fraction of 0.6-1.9 mm was submitted to hydrothermal synthesis of magnetite. Thus formed magnetite modified tuff (MMT) was characterized in terms of Fe-content, N2 adsorption-desorption isotherm, SEM, zeta potential-pH analyses and adsorption behavior towards phosphates/arsenates in batch and column conditions. Elemental analysis showed that 36.54 mg g(-1) of magnetite was attached to the porous tuff grains. This modification changed pore structure and specific surface area. An increase of cca 35% in Sp value was obtained. Batch experiments proved that MMT was 4-5 times more efficient in removal of phosphates/ arsenates than non-modified T. The maximum sorption capacities of phosphates calculated based on Langmuir equation were 0.45 and 1.91 mg g(-1), while those for arsenate were 0.551 m g(-1) and 2.36 mg g(-1) for T and MMT, respectively. The intra-particle diffusion model was the most suited for describing the adsorption process of phosphate and arsenate onto MMT. Fixed-bed column data corroborated batch results, i.e. MMT was 6 times superior in contaminant adsorption than T. Modification with magnetite improved T potential for usage in water treatment applications: its filtration ability remained unchanged, while adsorption capacity for phosphates/arsenates removal was improved. | en |
dc.publisher | Elsevier Science Bv, Amsterdam | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45012/RS// | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45019/RS// | |
dc.rights | restrictedAccess | |
dc.source | Advanced Powder Technology | |
dc.subject | Tuff | en |
dc.subject | Magnetite | en |
dc.subject | Arsenate | en |
dc.subject | Phosphate | en |
dc.subject | Adsorption | en |
dc.title | Multifunctional use of magnetite-coated tuff grains in water treatment: Removal of arsenates and phosphates | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 1695 | |
dc.citation.issue | 8 | |
dc.citation.other | 30(8): 1687-1695 | |
dc.citation.rank | M21 | |
dc.citation.spage | 1687 | |
dc.citation.volume | 30 | |
dc.identifier.doi | 10.1016/j.apt.2019.05.020 | |
dc.identifier.scopus | 2-s2.0-85066492267 | |
dc.identifier.wos | 000471847800030 | |
dc.type.version | publishedVersion | |