Kinetic aspects on ferric arsenate formation in a fix bed gas-solid reaction system

Vista sencilla de ítem
dc.contributor.authorBalladares, Eduardo
dc.contributor.authorParra, Roberto
dc.contributor.authorSánchez, Mario
dc.date.accessioned2022-06-28T16:06:55Z
dc.date.available2022-06-28T16:06:55Z
dc.date.issued2015
dc.descriptionIndexación: Scopuses
dc.description.abstractThe fixation of arsenic contained in gases produced during pyrometallurgical processes by using solid ferric oxide was studied in the range 873-1073 K under different oxygen potential and solid aggregates porosities. Arsenic fixation on solid iron oxides is described by the pore blocking model under the studied conditions. The solid product of the reaction has a molar volume 3 times larger than the solid reactant causing fast decreasing of the inter-granular spacing. The activation energies of arsenic fixation reaction are 34.96 and 35.46 kJ/mol for porosities of 0.88 and 0.74 respectively, and for porosity of 0.55 the activation energy was 26.88 kJ/mol. These values of activation energy show that intra-pellets diffusion has an effect only in samples with 0.55 porosity. Minor sintering of particles was detected. Industrial application of the concept demands a reaction system, which in is required better gas-solid contact for attaining larger conversions. © The author; licensee Universidad Nacional de Colombia.es
dc.description.urihttps://revistas.unal.edu.co/index.php/dyna/article/view/42131/pdf_106
dc.identifier.doi10.15446/dyna.v82n189.42131
dc.identifier.issn0012-7353
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/23018
dc.language.isoenes
dc.publisherUniversidad Nacional de Colombiaes
dc.rights.licenseAtribución-NoComercial-CompartirIgual 4.0 Internacional (CC BY-NC-SA 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/4.0/deed.es
dc.subjectArsenic fixationes
dc.subjectCopper smeltinges
dc.subjectFlue dustes
dc.subjectGas treatmentes
dc.titleKinetic aspects on ferric arsenate formation in a fix bed gas-solid reaction systemes
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
42131-Texto del artículo-240401-1-10-20150221.pdf
Tamaño:
898.51 KB
Formato:
Adobe Portable Document Format
Descripción:
DYNA (Colombia) Volume 82, Issue 189, Pages 90 - 952015
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FIng - Artículos de Revista