FilterLi

The initial situation

In Bolivia and Chile, mining accounts for a considerable proportion of the gross domestic product. Due to the increasing demand for batteries and the decarbonisation of traffic, lithium is indispensable. The conventional methods of lithium extraction severely harm the environment, as they consume a great deal of water and energy and damage ecosystems. There is therefore an urgent need for more environmentally friendly methods.

The approach

The use of modular membrane configurations supports the project aim of enabling more sustainable lithium production. These membrane procedures offer a more efficient separation of dissolved ions than other technologies and are characterised by low energy and chemical consumption as well as a long service life. This is decisive for the environmentally friendly extraction of lithium, especially in regions where there is a shortage of water.

The objectives and measures

The Technical University of Berlin, Universidad Técnica de Oruro and Universidad de La Frontera have identified the challenges in the mining areas. Together with aqua & waste International in Germany and Ad Infinitum in Chile, a technical solution is being developed and demonstrated on site.

In order to minimise the environmental effects of lithium extraction while increasing efficiency, the ideal location for the technology is being singled out in cooperation with local industry and an integrated process concept is being developed. In addition, sustainable methods for metal extraction are being determined and a knowledge transfer system established to ensure the long-term operation of the plant.

During the demonstration, a profitability analysis is being conducted and an information package prepared for stakeholders. Training materials are also being developed to disseminate the technology in line with the Sustainable Development Goals (SDGs).

The project targets the reduction of water consumption and environmental pollution, making land utilisation more efficient and increasing local value creation. Furthermore, it also promotes awareness and knowledge among local actors and improves their networking. The FilterLi project thus contributes to more sustainable and efficient lithium extraction, thus providing ecological and economic benefits.