Enhanced transport and transformation of zero-valent nanoiron in clay using direct electric current

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorGomes, Helena I.-
Autor(es): dc.creatorFerreira, Célia-
Autor(es): dc.creatorRibeiro, Alexandra B.-
Autor(es): dc.creatorPamukcu, Sibel-
Data de aceite: dc.date.accessioned2025-08-21T15:09:58Z-
Data de disponibilização: dc.date.available2025-08-21T15:09:58Z-
Data de envio: dc.date.issued2023-07-04-
Data de envio: dc.date.issued2023-07-04-
Data de envio: dc.date.issued2013-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/10400.2/14207-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/10400.2/14207-
Descrição: dc.descriptionOne of the major obstacles to zerovalent iron nanoparticles (nZVI) application in soil and groundwater remediation is the limited transport, especially in low-permeability soils. In this study, direct current (constant potential of 5.0 V) was used to enhance polymer-coated nZVI mobility in different porous media, including a bed of glass beads and kaolin clay. The tests were conducted using a modified electrophoretic cell and with nZVI concentrations typical of field applications (4 g L−1 ). Experimental results indicate that the use of direct current can enhance the transport of the polymer-modified nanoparticles when compared with natural diffusion in low permeability or surface neutral porous medium. The applied electric field appeared to enhance the oxidation–reduction potential, creating a synergistic effect of nZVI usage with electrokinetics. Aggregation of the nanoparticles, observed near the injection point, remained unresolved.-
Descrição: dc.descriptioninfo:eu-repo/semantics/publishedVersion-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer Nature-
Palavras-chave: dc.subjectZerovalent iron nanoparticles (nZVI)-
Palavras-chave: dc.subjectEnhanced transport-
Palavras-chave: dc.subjectDirect current-
Palavras-chave: dc.subjectElectrokinetics-
Palavras-chave: dc.subjectElectrochemical treatment-
Título: dc.titleEnhanced transport and transformation of zero-valent nanoiron in clay using direct electric current-
Aparece nas coleções:Repositório Aberto - Universidade Aberta (Portugal)

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