2006 | OriginalPaper | Buchkapitel
A method to measure arsenic readily released to pore waters from uranium mill tailings
verfasst von : John Mahoney, Donald Langmuir, John Rowson
Erschienen in: Uranium in the Environment
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
A method to quantify the amount of readily released arsenic in uranium mill tailings was developed using a technique known as
E
quilibrium
P
artitioning
I
n
C
losed
S
ystems (EPICS). The method employs a gentle leaching solution that, except for its arsenic (As) concentration, is identical to the neutralized raffinate that contacts the tailings. Prior to implementation, the experimental design and mathematical approach were verified in geochemical models using PHREEQC. Laboratory experiments using tailings from the Athabasca Basin of Northern Saskatchewan demonstrated that As that could be readily released to pore waters is about 0.2 % of the total As in the tailings.