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Articles, 3 records found
Articles 3 records found  
1.
17 p, 2.2 MB Analysis of the iron coatings formed during marcasite and arsenopyrite oxidation at neutral-alkaline conditions / Asta Andrés, María Pilar (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Pérez-López, Rafael (Universidad de Huelva. Departamento de Geología) ; Román-Ross, G. (Amphos 21) ; Illera, V. (University of California. School of Natural Sciences) ; Cama, J. (Consejo Superior de Investigaciones Científicas (Espanya). Institute of Environmental Assessment and Water Research) ; Cotte, M. (European Synchrotron Facility) ; Tucoulou, R. (European Synchrotron Facility)
In order to study the nature of the precipitates formed on arsenopyrite and marcasite after reacting with neutral to alkaline solutions, a combination of techniques including Scanning Electron Microscope-Energy Dispersive Spectroscopy (SEM-EDS), X-ray Photoelectron Spectroscopy (XPS) and synchrotron-based techniques such as micro-X-Ray diffraction (µXRD) and Micro-X-ray Absorption Near Edge Structure (µXANES) have been used. [...]
2013 - 10.1344/105.000002062
Geologica acta, Vol. 11, Núm. 4 (December 2013) , p. 465-481  
2.
12 p, 1.2 MB Dissolution of minor sulphides present in a pyritic sludge at pH 3 and 25º C / Cama Robert, Jordi (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Acero Salazar, Patricia (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Acero, P.
The steady-state dissolution rates of galena, sphalerite and chalcopyrite at pH 3 under oxygen saturated atmosphere and at 25ºC are obtained by means of non-stirred flow-through experiments. These dissolution rates are compared with those estimated by dissolving pyritic sludge from the Aznalcollar mining tailings composed of pyrite and minor sulphides galena, sphalerite and chalcopyrite. [...]
2005 - 10.1344/105.000001411
Geologica acta, Vol. 3, Núm. 1 (2005) , p. 15-26  
3.
9 p, 876.8 KB Chalcopyrite dissolution rate law from pH 1 to 3 / Acero Salazar, Patricia (Universidad de Zaragoza. Area de Petrología y Geoquímica) ; Cama Robert, Jordi (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Ayora, Carles (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera) ; Asta Andrés, María Pilar (Consejo Superior de Investigaciones Científicas (Espanya). Institut de Ciències de la Terra Jaume Almera)
Chalcopyrite dissolution kinetics in the pH range of 1 to 3 were studied by means of long-term flow-through experiments to obtain a dissolution rate law which can be coupled with reactive transport models to forecast Acid Rock Drainage. [...]
2009 - 10.1344/105.000001444
Geologica acta, Vol. 7, Núm. 3 (Setembre 2009) , p. 389-397  

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1 Cama, Jordi
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