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Immobilization of selenite onto natural siderite (FeCO3)
dc.contributor.author | Martínez Martínez, María del Rosario |
dc.contributor.author | Giménez Izquierdo, Francisco Javier |
dc.contributor.author | Pablo Ribas, Joan de |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Química |
dc.date.accessioned | 2015-12-09T12:00:00Z |
dc.date.available | 2015-12-09T12:00:00Z |
dc.date.issued | 2015 |
dc.identifier.citation | Martinez, M., Gimenez, F., Pablo, J. Immobilization of selenite onto natural siderite (FeCO3). A: European Meeting on Chemical Industry and Environment. "EMCHIE 2015: 7th European Meeting on Chemical Industry and Environment: Tarragona, Spain: june 10-12, 2015: conference proceedings". Tarragona: 2015, p. 511-512. |
dc.identifier.isbn | 978-84-8424-367-0 |
dc.identifier.uri | http://hdl.handle.net/2117/80303 |
dc.description.abstract | The sorption processes of metals and semimetals on siderite are being studied because of the potential adequacy of the mineral for removing contaminants from natural waters and because of its formation during the reduction of iron(III) (hydr)oxides under anaerobic conditions in the presence of organic matter or bacteria. This transformation could involve the release of contaminants previously sorbed on the iron(III) (hydr)oxides. In this work, the sorption of selenite on natural siderite (Bordes de Conflent, Lleida, Spain) is experimentally studied and the results obtained are compared to the previous results on selenite sorption on magnetite, hematite and goethite.Results indicate that the process of sorption was very fast; the equilibrium was reached in less than 1 hour, which indicates that sorption will not be kinetically controlled. The experimental data were fitted with a non-competitive Langmuir isotherm, which would indicate that the main process for the decrease of selenite in solution would be its sorption on siderite via monolayer coverage of the solid surface. The values of maximum sorption capacity of siderite obtained at pH 7,1 and 8,0 were 6,9 10-7 and 6,4 10-7 mol g-1, respectively and the same value of Langmuir constant was obtained for both pH values, 4,7 104 L mol-1. |
dc.format.extent | 2 p. |
dc.language.iso | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria química |
dc.subject.lcsh | Selenite |
dc.subject.lcsh | Water--Pollution |
dc.subject.other | selenite |
dc.subject.other | sorption |
dc.subject.other | natural siderite |
dc.subject.other | Langmuir isotherm |
dc.title | Immobilization of selenite onto natural siderite (FeCO3) |
dc.type | Conference lecture |
dc.subject.lemac | Contaminants orgànics de l'aigua |
dc.contributor.group | Universitat Politècnica de Catalunya. SETRI - Grup de Tècniques de Separació i Tractament de Residus Industrials |
dc.rights.access | Open Access |
local.identifier.drac | 16844477 |
dc.description.version | Postprint (published version) |
local.citation.author | Martinez, M.; Gimenez, F.; Pablo, J. |
local.citation.contributor | European Meeting on Chemical Industry and Environment |
local.citation.pubplace | Tarragona |
local.citation.publicationName | EMCHIE 2015: 7th European Meeting on Chemical Industry and Environment: Tarragona, Spain: june 10-12, 2015: conference proceedings |
local.citation.startingPage | 511 |
local.citation.endingPage | 512 |