Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/37125
metadata.artigo.dc.title: Adsorption of etheramine on kaolinite: a cheap alternative for the treatment of mining effluents
metadata.artigo.dc.creator: Magriotis, Zuy M.
Leal, Paulo V. B.
Sales, Priscila F.
Papini, Rísia M.
Viana, Paulo R. M.
metadata.artigo.dc.subject: Adsorption
Kaolinite
Flotation
Iron ore
Etheramine removal
metadata.artigo.dc.publisher: Elsevier
metadata.artigo.dc.date.issued: 15-Dec-2010
metadata.artigo.dc.identifier.citation: MAGRIOTIS, Z. M. et al. Adsorption of etheramine on kaolinite: a cheap alternative for the treatment of mining effluents. Journal of Hazardous Materials, [S.l.], v. 184, n. 1-3, p. 465-471, Dec. 2010. DOI: 10.1016/j.jhazmat.2010.08.057.
metadata.artigo.dc.description.abstract: The results of laboratory experiments aimed at determining the influence of physicochemical parameters on the adsorption of etheramine (adsorbate) on white, pink and yellow kaolinites (adsorbent) are presented. The adsorption of etheramine was favoured at pH 10.0 under conditions where the initial concentration of etheramine was 200 mg l−1 and the ratio of adsorbent to volume of etheramine solution was 1:100 g ml−1. Equilibrium adsorption was attained within 30 min and the efficiencies of removal of etheramine by white, pink and yellow kaolinite were 77%, 80% and 69%, respectively. The adsorption isotherms of the kaolinites were determined under optimum conditions and with adsorbate in the concentration range of 0–4000 mg l−1. The amounts of etheramine adsorbed per unit mass of adsorbent were 33.03, 34.32 and 23.11 mg g−1 for white, pink and yellow kaolinites, respectively. The adsorption of etheramine on kaolinites was better fitted to the Langmuir rather than the Freundlich isotherm, and could be explained by a pseudo-second-order kinetic model. It is concluded that kaolinites offer significant potential in the treatment of effluents originating from the processing of lower grade iron ores by froth flotation.
metadata.artigo.dc.identifier.uri: https://www.sciencedirect.com/science/article/pii/S0304389410010733
http://repositorio.ufla.br/jspui/handle/1/37125
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.