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Eramet confirms successful lithium extraction from geothermal brine in France

By Mary Page Bailey |

Eramet Group (Paris, France), in partnership with Électricité de Strasbourg (ÉS), has succeeded in extracting lithium from geothermal brine during pilot-scale tests conducted early 2021 at the Rittershoffen geothermal power plant (northern Alsace, France), which has been operated by ÉS for the past five years.

Eramet’s teams used the groundbreaking direct lithium extraction process developed as part of its Centenario Lithium project, which aims to extract lithium from the brines contained in a salar in  Argentina.  This  process,  for  which  several  patents  have  been  granted,  is  based  on  an innovative material  developed  by  Eramet  and IFP  Energies nouvelles  (IFPEN). It  has  been adapted to work with hot brines under the pressure conditions used to produce heat and electricity in the Rhine Rift Valley.

This is a major step forward for the European Geothermal Lithium Brine (EuGeLi) project, headed by Eramet and Electricité de Strasbourg, along with BRGM, IFPEN and BASF, and which receives European funding from EIT-Raw Materials. The purpose of EuGeLi is to exploit the geothermal brines of the Franco-German basin.

Launched in 2019, EuGeLi is set to expand in 2021 with the scaling up of the extraction process in order to produce lithium carbonate, an essential component of lithium-ion batteries. The lithium market is experiencing very strong demand due to the rapid growth of the electric vehicles market and energy storage applications for intermittent renewable energies. By the end of the year, this program  should  make  it  possible  to  assess  the  economic  potential  of  geothermal  lithium extraction.

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