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dc.date.accessioned 2017-06-16T14:46:23Z
dc.date.available 2017-06-16T14:46:23Z
dc.identifier.uri https://digital.cic.gba.gob.ar/handle/11746/5869
dc.title Iron Activation of Natural Aluminosilicates to Remove Arsenic from Groundwater en
dc.type Artículo es
dcterms.abstract Low-cost adsorbents constituted by Fe-modified-aluminosilicates (laminar and zeolite type minerals) were developed and characterized to be used in the arsenic removal from groundwater. Iron activation was carried out “in situ” by the synthesis and deposition of mesoporous ferrihydrite. Natural iron-rich aluminosilicate was used as reference. All samples were characterized by X-ray diffraction, Raman spectroscopy, BET N2-adsorption, SEM-EDS microscopy and ICP chemical analysis. Experimental results of arsenic sorption showed that iron-poor raw materials were not active, unlike iron activated samples. The iron loading in all activated samples was below 5% (expressed as Fe2O3), whereas the removal capacity of these samples reaches between 200-700 μg of As by g of adsorbent, after reusing between 17 cycles and 70 cycles up to adsorbent saturation. Differences can be associated to mineral structure and to the surface charge modification by iron deposition, affecting the attraction of the As-oxoanion. On the basis of low-cost raw materials, the easy chemical process for activation shows that these materials are potentially attractive for As(V) removal. Likewise, the activation of clay minerals, with natural high content of iron, seems to be a good strategy to enhance the arsenic adsorption ability and consequently the useful life of the adsorbent. en
dcterms.extent p. 744-752 es
dcterms.issued 2013
dcterms.language Inglés es
dcterms.license Attribution-NonCommercial 4.0 International (BY-NC 4.0) es
dcterms.publisher David Publishing Company es
dcterms.subject arsenic removal en
dcterms.subject iron activation en
dcterms.subject aluminosilicates en
cic.version info:eu-repo/semantics/publishedVersion es
dcterms.creator.author Botto, Irma Lía es
dcterms.creator.author González, María José es
dcterms.creator.author Gazzolli, Delia es
dcterms.creator.author Soto, Edgardo Luis es
cic.lugarDesarrollo Instituto de Recursos Minerales es
dcterms.subject.materia Ingeniería Química es
dcterms.identifier.url Recurso completo es
dcterms.identifier.other DOI 10.17265/2162-5298/2013.12.006 es
dcterms.isPartOf.series Journal of Environmental Science and Engineering es
cic.isPeerReviewed true es
cic.isFulltext true es


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