What chemical reaction dominates the CO2 and O2 in-situ uranium leaching? Insights from a three-dimensional multicomponent reactive transport model at the field scale

• Published in: Applied geochemistry Vol. 148; p. 105522
• Main Authors: Qiu, Wenjie, Yang, Yun, Song, Jian, Que, Weimin, Liu, Zhengbang, Weng, Haicheng, Wu, Jianfeng, Wu, Jichun
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.01.2023
• Subjects: bicarbonates; carbon dioxide; Carbonate minerals; carbonates; cations; China; dissociation; dolomite; exposure assessment; geochemistry; In-situ leaching (ISL) of uranium; iron oxyhydroxides; oxidation; oxygen consumption; pyrite; Pyrite oxidation; Reactive transport modeling (RTM); remediation; risk; simulation models; uranium; China; In-situ leaching (ISL) of uranium; Reactive transport modeling (RTM); Carbonate minerals; Pyrite oxidation

The complex behavior of uranium in recovery is mostly driven by water-rock interactions following lixiviant injection into ore-bearing aquifers. Significant challenges exist in exploring the geochemical processes responsible for uranium release and mobilization. Herein this study provides an illustr...