The U.S. Department of Energy (DOE) finalized the Standard Lithium and Equinor USD 225 million grant for the South West Arkansas (SWA) lithium project.
In May 2024, Equinor entered a strategic partnership with Standard Lithium acquiring a 45% share in two lithium companies in Southwest Arkansas and East Texas.
USD 225 million funding from the DOE’s Office of Manufacturing and Energy Supply Chains will support construction of a processing facility for the SWA project, which in Phase 1 is targeting an annual production of 22,500 tonnes of lithium carbonate for use in battery production.
Aerial footage of the Southwest Arkansas project. Photo: Standard Lithium
'The U.S. Department of Energy’s support demonstrates the project’s maturity and strengthens its financial robustness as we work towards a final investment decision. We look forward to working with Standard Lithium and alongside the local community to enhance the US lithium supply chain by deploying innovative technology,' says Hege Skryseth,executive vice president for Technology, Digital & Innovation in Equinor.
Lithium is an essential mineral and is required to meet the projected growth in electric vehicles and broader battery energy storage. Direct Lithium Extraction (DLE) is a method of producing lithium from lithium-rich saltwater typically from deep underground reservoirs which cannot be used for drinking or agriculture purposes.
The project’s design is being updated from its original Preliminary Feasibility Study (PFS). The target is now a larger total output of 45,000 tonnes per annum of lithium carbonate, to be developed in two phases of 22,500 tonnes each. A Definitive Feasibility Study (DFS) and Front-End Engineering Design (FEED) study are currently underway to mature the project towards a final investment decision (FID).
The SWA project’s facilities are planned to be located in Lafayette County, approximately 7 miles south of Lewisville, Arkansas and the brine unit that will source lithium-bearing brine for the project facilities spans Lafayette and Columbia counties. Pending a positive investment decision, the project is expected to create up to 300 construction and 100 direct jobs. The project could further benefit the local community through infrastructure improvements, healthcare initiatives, educational partnerships, and workforce development programs.
Mineral extraction from brines
- DLE is a method of producing lithium from lithium-rich saltwater typically from deep underground reservoirs which cannot be used for drinking or agriculture purposes
- Lithium is separated from other brine constituents, like sodium, calcium and magnesium, by bringing the brine into contact with a medium designed to selectively attract the lithium
- DLE is a technology that extracts lithium from brines located deep underground and reinjects the brine without lithium back into the subsurface through a second injector well
- DLE technologies produce a high purity lithium concentrate which can be converted into battery grade lithium chemicals using conventional processing technologies
- Integrated DLE processes typically consist of five main steps: pre-treatment, DLE, concentration, purification and crystallisation
- Equinor began testing DLE technologies in 2018 to build an understanding of how to scale-up including pre-treatment of subsurface brines and processing to battery grade lithium chemicals.
In 2021, Equinor Ventures invested in Lithium de France which is developing DLE and geothermal projects in France.
Source: Equinor
