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dc.contributor.authorRibas Fargas, David
dc.contributor.authorPešková, Kristýna
dc.contributor.authorJubany, Irene
dc.contributor.authorParma, Pert
dc.contributor.authorCernik, M.
dc.contributor.authorBenito Páramo, José Antonio
dc.contributor.authorMartí Gregorio, Vicenç
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2021-06-10T12:19:12Z
dc.date.available2021-06-10T12:19:12Z
dc.date.issued2019-06-15
dc.identifier.citationRibas, D. [et al.]. High reactive nano zero-valent iron produced via wet milling through abrasion by alumina. "Chemical engineering journal", 15 Juny 2019, vol. 366, p. 235-245.
dc.identifier.issn1385-8947
dc.identifier.urihttp://hdl.handle.net/2117/347105
dc.description.abstractThe performance of new nano zero-valent iron (nZVI) particles produced by a promising new milling method in organic solvent was examined. The basic feature of the new process involves the addition of abrasive alumina particles having an average particle size of 5¿µm during milling. The milled particles with alumina had a specific surface area exceeding 20¿m2·g-1 as well as high percentages of Fe(0) content of 75–80%. The reactivity against Cr(VI), Trichloroethylene, and Tetrachloroethylene was determined and in all cases, the removal capacity of the milled particles was higher than that of commercial available nZVI particles. This high reactivity may be related to the absence of a thick and continuous oxide layer on the surface, the high disorder levels of the metallic structure and the large number of reaction sites. Sedimentation tests revealed very good suspension stability, while in mobility tests, the particles could be distributed throughout the column length. The results showed a low tendency to agglomerate in aqueous solution. This behaviour has been attributed to two factors related to the milling process: first, the high ¿-Potential found in the particles, which enhances electrostatic repulsion. The second factor is the significant decrease of saturation magnetization of the milled particles with alumina in comparison with the values of the commercial nZVI particles, leading to a reduction in magnetic interparticle interaction. This decrease may be related to the introduction of a significant carbon content in the iron particles (0.65–1.35%wt, depending on the sample) and the presence of a highly deformed nanostructure.
dc.format.extent11 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshNanoparticles
dc.subject.otherNano zero-valent iron (nZVI)
dc.subject.otherNanoparticles
dc.subject.otherReactivity
dc.subject.otherMilling
dc.subject.otherAggregation
dc.subject.otherMobility
dc.titleHigh reactive nano zero-valent iron produced via wet milling through abrasion by alumina
dc.typeArticle
dc.subject.lemacNanopartícules
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.contributor.groupUniversitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management
dc.identifier.doi10.1016/j.cej.2019.02.090
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1385894719303213
dc.rights.accessOpen Access
local.identifier.drac23966197
dc.description.versionPostprint (author's final draft)
local.citation.authorRibas, D.; Pešková, K.; Jubany, I.; Parma, P.; Cernik, M.; Benito, J.; Martí, V.
local.citation.publicationNameChemical engineering journal
local.citation.volume366
local.citation.startingPage235
local.citation.endingPage245


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