Influencia de las condiciones de pH y tamaño de grano en la capacidad de lixiviación de As en los materiales de la aureola metamórfica del skarn granítico de Carlés (Asturias, NO de España)
- Moreno Merino, Luis
- Losa Román, Almudena de la
- Meléndez Asensio, Mónica
- Rodríguez, M. L.
- Quintana Nieto, José Ramón
ISSN: 0366-0176
Year of publication: 2006
Volume: 117
Issue: 3
Pages: 401-412
Type: Article
More publications in: Boletín geológico y minero
Abstract
In this paper influence of some pH conditions and rock texture on the capacity of arsenic lixiviation from the materials of the Carlés granitic skarn metamorphic aureole has been estimated. So 6 samples with different arsenic content belonging to igneous and aureole materials with different alteration conditions and grain sizes have been selected and they have been subjected to two batch tests, one of them in equilibrium batch operation and the other one in kinetic batch operation. Experimental conditions were to subject samples to an oxidizing environment in touch with atmosphere and discontinuous shaking with a whole contact time of 28 days. Obtained values of lixiviated arsenic clearly depend on the original material, stage of initial alteration and among of acid added to extracting solution.