thumbnail

Reactive transport modeling at uranium in situ recovery sites: uncertainties in uranium sorption on iron hydroxides

By:
and
Edited by:
Adrian Brown, Linda Figueroa, and Christian Wolkersdorfer

Links

Abstract

Geochemical changes that can occur down gradient from uranium in situ recovery (ISR) sites are important for various stakeholders to understand when evaluating potential effects on surrounding groundwater quality. If down gradient solid-phase material consists of sandstone with iron hydroxide coatings (no pyrite or organic carbon), sorption of uranium on iron hydroxides can control uranium mobility. Using one-dimensional reactive transport models with PHREEQC, two different geochemical databases, and various geochemical parameters, the uncertainties in uranium sorption on iron hydroxides are evaluated, because these oxidized zones create a greater risk for future uranium transport than fully reduced zones where uranium generally precipitates.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Reactive transport modeling at uranium in situ recovery sites: uncertainties in uranium sorption on iron hydroxides
Volume
I
Year Published:
2013
Language:
English
Publisher:
International Mine Water Association
Contributing office(s):
Crustal Geophysics and Geochemistry Science Center
Description:
6 p.
Larger Work Type:
Book
Larger Work Subtype:
Conference publication
Larger Work Title:
Annual International Mine Water Association Conference: Reliable Mine Water Technology
First page:
377
Last page:
382