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Geochemical speciation of mercury in bauxite

Abstract: he presence of trace concentrations of mercury in bauxite is a potential environmental concern in the Bayer alumina refining process. An understanding of the geochemical speciation of mercury in bauxite provides insight into the behavior of mercury in the Bayer process. The speciation of mercury was evaluated using a novel continuous thermal desorption methodology, sequential extractions, alkaline digestion, aqua regia digestion and hydrofluoric acid total dissolution assay. Thermal desorption demonstrated two distinct mercury forms. Labile mercury was found to be present as metacinnabar or organic-associated mercury, while refractory mercury was associated with quartz or other refractory silicates.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Applied geochemistry, 2018, 93, 30-35

Editorial: Elsevier

 Fecha de publicación: 01/06/2018

Nº de páginas: 6

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.apgeochem.2018.03.007

ISSN: 0883-2927,1872-9134

Url de la publicación: https://doi.org/10.1016/j.apgeochem.2018.03.007

Autores/as

STAUN, CHRIS

VAUGHAN, JAMES WILLIAM

LÓPEZ ANTÓN, MARÍA ANTONIA

MARTÍNEZ TARAZONA, MARÍA ROSA