Cadmium and lead removal from aqueous solution by grape stalk wastes: modeling of a fixed-bed column

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dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor	Universitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials
dc.contributor.author	Miralles Esteban, Núria
dc.contributor.author	Valderrama Angel, César Alberto
dc.contributor.author	Casas Pons, Ignasi
dc.contributor.author	Martínez Martínez, María del Rosario
dc.contributor.author	Florido Pérez, Antonio
dc.date	2010-09
dc.identifier.citation	Miralles, N. [et al.]. Cadmium and lead removal from aqueous solution by grape stalk wastes: modeling of a fixed-bed column. "Journal of chemical and engineering data", Setembre 2010, vol. 55, núm. 9, p. 3548-3554.
dc.identifier.citation	0021-9568
dc.identifier.citation	10.1021/je100200w
dc.identifier.uri	http://hdl.handle.net/2117/10443
dc.language.iso	eng
dc.relation	http://pubs.acs.org/doi/abs/10.1021/je100200w
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria química
dc.subject	Grapes
dc.subject	Cadmium
dc.subject	Wine--Chemistry
dc.subject	Lead
dc.subject	Vi -- Anàlisi -- Plom
dc.subject	Indústria vinícola
dc.title	Cadmium and lead removal from aqueous solution by grape stalk wastes: modeling of a fixed-bed column
dc.type	info:eu-repo/semantics/publishedVersion
dc.type	info:eu-repo/semantics/article
dc.description.abstract	Grape stalk wastes generated in the wine production process were used for the removal of cadmium and lead ions from aqueous solutions. The experimental breakthrough curves (BTC) were obtained from fixedbed columns. Experiments were carried out to evaluate the influence of both inlet metal concentration and sorbent particle size. The experimental data were fitted to the Thomas model, a well-established fixed-bed sorption model. The theoretical sorption capacities obtained by the Thomas model were in good agreement with the breakthrough capacities determined from the sorption data. The CXTFIT code was used to determine the transport and sorption parameters of the convective-dispersive equation (CDE) and the two-site deterministic nonequilibrium (TSM/CDE) model by adjusting the models to the experimental breakthrough curves. The results showed that sorption capacities as well as both transport and sorption parameters were affected by the initial metal concentration as well as by the sorbent particle size.

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