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Marten H.,Heathgate Resources Pty. Ltd. Heathgate | Marten H.,Umwelt und Ingenieurtechnik GmbH Dresden UIT | Kalka H.,Umwelt und Ingenieurtechnik GmbH Dresden UIT | Krause J.,Umwelt und Ingenieurtechnik GmbH Dresden UIT | And 3 more authors.
FOG - Freiberg Online Geoscience | Year: 2015

The recovery efficiency in in-situ leaching (ISL) applications is mainly determined by the appropriate control of both wellfield hydrology and geochemistry. The paper summarizes recent advancements to optimize ISL wellfield design and operation in compliance with environmental conditions and regulatory requirements. This review comprises: • Advanced exploration of sedimentary-hosted deposits by geophysical surveying and innovative borehole logging methods. • 3D structural modeling of the deposit including hydrological and mineralogical/geochemical data. • Advanced wellfield design by applying 2D/3D hydrological modeling embedded in a regional- scale model to minimize environmental impacts. • Operational control of wellfield chemistry on the basis of reactive-transport simulations considering − Leaching kinetics in competition to interfering reactions, − Geometry effects demonstrated by 1D, 2D and 3D reactive transport studies. • Post-mining aquifer restoration including natural attenuation effects. © 2015, Technical University Freiberg. All rights reserved.

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