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Article: Synthesis of FC-supported Fe through a carbothermal process for immobilizing uranium

TitleSynthesis of FC-supported Fe through a carbothermal process for immobilizing uranium
Authors
KeywordsCarbothermal reduction
Fe-FC
Uranium
Sorption
Issue Date2018
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat
Citation
Journal of Hazardous Materials, 2018, v. 357, p. 168-174 How to Cite?
AbstractThe abundant generation of uranium (U), a radioactive nuclide, engenders a severe hazard to the environment. Iron based materials were used to immobilize U from water, however, the immobilization is limited by the agglomeration of nanoparticle Fe. In this study, a novel carbothermal process was proposed to synthesize flour carbon (FC) supported nano-flake Fe (Fe-FC). Scanning electron microscopy (SEM) and nitrogen isotherm adsorption-desorption analysis were conducted to characterize Fe-FC. The immobilization characteristics were investigated through batch sorption experiments. Results indicated that nano-flake was appropriately dispersed on the surface. The sorption capacity reached 19.12 mg/g when the initial concentration of U and the dosage of Fe-FC were 20 mg/L and 1 g/L, respectively. Langmuir isotherm sorption and pseudo-second-order models were fitted well to sorption experimental data. The sorption mechanism is ascribed to surface chemisorptions between U(VI) and Fe-FC. Subsequently, X-ray diffraction (XRD) analysis validated that formation of Fe2UO3 contributed to the favorable immobilization of U and that Fe2UO3 was the fate of U.
Persistent Identifierhttp://hdl.handle.net/10722/259181
ISSN
2019 Impact Factor: 9.038
2015 SCImago Journal Rankings: 1.692
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKong, L-
dc.contributor.authorZhang, H-
dc.contributor.authorShih, K-
dc.contributor.authorSu, M-
dc.contributor.authorDiao, Z-
dc.contributor.authorLong, J-
dc.contributor.authorHou, L-
dc.contributor.authorSong, G-
dc.contributor.authorChen, D-
dc.date.accessioned2018-09-03T04:02:47Z-
dc.date.available2018-09-03T04:02:47Z-
dc.date.issued2018-
dc.identifier.citationJournal of Hazardous Materials, 2018, v. 357, p. 168-174-
dc.identifier.issn0304-3894-
dc.identifier.urihttp://hdl.handle.net/10722/259181-
dc.description.abstractThe abundant generation of uranium (U), a radioactive nuclide, engenders a severe hazard to the environment. Iron based materials were used to immobilize U from water, however, the immobilization is limited by the agglomeration of nanoparticle Fe. In this study, a novel carbothermal process was proposed to synthesize flour carbon (FC) supported nano-flake Fe (Fe-FC). Scanning electron microscopy (SEM) and nitrogen isotherm adsorption-desorption analysis were conducted to characterize Fe-FC. The immobilization characteristics were investigated through batch sorption experiments. Results indicated that nano-flake was appropriately dispersed on the surface. The sorption capacity reached 19.12 mg/g when the initial concentration of U and the dosage of Fe-FC were 20 mg/L and 1 g/L, respectively. Langmuir isotherm sorption and pseudo-second-order models were fitted well to sorption experimental data. The sorption mechanism is ascribed to surface chemisorptions between U(VI) and Fe-FC. Subsequently, X-ray diffraction (XRD) analysis validated that formation of Fe2UO3 contributed to the favorable immobilization of U and that Fe2UO3 was the fate of U.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat-
dc.relation.ispartofJournal of Hazardous Materials-
dc.subjectCarbothermal reduction-
dc.subjectFe-FC-
dc.subjectUranium-
dc.subjectSorption-
dc.titleSynthesis of FC-supported Fe through a carbothermal process for immobilizing uranium-
dc.typeArticle-
dc.identifier.emailKong, L: kongljun@hku.hk-
dc.identifier.emailShih, K: kshih@hku.hk-
dc.identifier.authorityShih, K=rp00167-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jhazmat.2018.05.067-
dc.identifier.pmid29886361-
dc.identifier.scopuseid_2-s2.0-85048535520-
dc.identifier.hkuros287880-
dc.identifier.volume357-
dc.identifier.spage168-
dc.identifier.epage174-
dc.identifier.isiWOS:000440958900018-
dc.publisher.placeNetherlands-

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