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Article
Open AccessIncorporation of Rare Earths and Yttrium in Calcite: A Critical Re-evaluation
The reported partition coefficients of REE with calcite are reviewed and critically discussed. In some of the reported experimental sets, REE concentrations are found to be supersaturated with respect to indiv...
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Article
Open AccessUnderground hydrogen storage: application of geochemical modelling in a case study in the Molasse Basin, Upper Austria
Hydrogen storage in depleted gas fields is a promising option for the large-scale storage of excess renewable energy. In the framework of the hydrogen storage assessment for the “Underground Sun Storage” proje...
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Article
Reactivity of sandstone and siltstone samples from the Ketzin pilot CO2 storage site-Laboratory experiments and reactive geochemical modeling
To evaluate mineralogical-geochemical changes within the reservoir of the Ketzin pilot CO2 storage site in Brandenburg, Germany, two sets of laboratory experiments on sandstone and siltstone samples from the Stut...
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Article
Modelling CO2-induced fluid–rock interactions in the Altensalzwedel gas reservoir. Part I: from experimental data to a reference geochemical model
Modelling fluid–rock interactions induced by CO2 is a key issue when evaluating the technical feasibility and long-term safety assessment of CO2 storage projects in deep formations. The German R&D programme CLEAN...
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Article
Modelling CO2-induced fluid–rock interactions in the Altensalzwedel gas reservoir. Part II: coupled reactive transport simulation
Injection of CO2 into gas reservoirs for CO2-enhanced gas recovery will initiate a series of geochemical reactions between pore fluids and solid phases. To simulate these conditions, the coupled multiphase flow a...