Chevron is exploring direct lithium extraction from oilfield wastewater using solvent extraction and ion adsorption to monetise brine streams and create a new revenue stream. Pennsylvania’s Marcellus Shale wastewater alone could supply 38–40% of US lithium demand, and DLE reduces extraction time to days versus 12–18 months for evaporation ponds.
Chevron has begun evaluating direct lithium extraction (DLE) technologies to recover lithium from oilfield wastewater, aiming to leverage existing wastewater streams as a new high-margin revenue source while reducing disposal costs.
Two primary methods—solvent extraction and ion adsorption—capture lithium from brines by transferring ions into an organic solvent or binding them to solid resins, with subsequent regeneration and stripping steps yielding concentrated lithium solutions.
Studies estimate that wastewater from Pennsylvania’s Marcellus Shale operations could theoretically meet 38–40% of US lithium demand if fully recovered, highlighting a substantial addressable market for DLE in North American operations.
DLE accelerates extraction to days versus 12–18 months for traditional evaporation ponds and utilises existing infrastructure to lower capex, but high chemical and energy requirements remain key cost and environmental challenges.
