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By Hugo Melo

The Challenges of Predictive Numerical Calculation Within Hypersaline Brines:Examples From Lithium Brines

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Lithium brines, today’s main lithium source have been increasingly studied in recent years. Geochemical modelling can be used to predict the operational or underground brine lithium concentrations, but it can also be applied to ground stability prediction. However hypersaline systems are challenging to model due to the inaccuracies introduced by elevated ionic strength when using the extended Debye-Hückel theory. A different approach, such as Pitzer is required. However, while generally internally consistent, this database is limited in the number of phases and elements it contains and therefore has limited predictive power. To overcome this issue, a literature review was undertaken.