Solution · Lithium Brine
Lithium Dehydration & Brine Processing
Lithium producers spend enormous energy concentrating brines before the lithium can be recovered. Petro Sep applies pervaporation to pull water selectively across a membrane, so the lithium stays in solution and the brine concentrates with far less thermal load than multi-stage distillation. The approach is in pilot validation today, run alongside producers on their own brine chemistries.
Readiness: Pilot stage
What you get
Outcomes on this vertical.
- Energy vs multi-stage distillation
- Substantially lower
- Pervaporation moves only the water through the membrane, avoiding the latent-heat penalty of boiling the whole brine. Savings depend on feed concentration and available waste heat.
- Lithium retention
- High
- Lithium and other dissolved salts stay on the feed side. Water is the species that crosses, so the valuable fraction concentrates rather than carries over.
- Footprint and modularity
- Skid-based
- Delivered as factory-packaged membrane skids that bolt onto an existing concentration train, so producers can stage capacity without a full plant rebuild.
Why pervaporation suits lithium brines
Conventional brine concentration leans on evaporation ponds or multi-stage thermal distillation, both of which are slow, land-hungry, or energy-intensive. Pervaporation takes a different route: a dense, selective membrane lets water vapor permeate under a vacuum on the downstream side while rejecting the dissolved salts. Because only the water changes phase, the energy demand scales with the water removed rather than the entire brine volume. For lithium chloride feeds, that means concentration steps that would otherwise dominate the energy budget can be shortened, with the membrane doing the selective work that heat alone does inefficiently.
Where this sits today
This is a pilot-stage application. We have validated the separation behavior on representative brine chemistries and continue to run pilot units with producers on their own feeds, because real brines carry impurities, organics, and temperature profiles that a generic test cannot capture. The honest position is that the physics is sound and the pilots are encouraging, and the next milestone is sustained operation at producer scale. We size and quote pilots as a structured step, not a finished promise, so partners can measure the result against their existing process before committing to a deployment.
Industries
Where this matters.
Frequently asked
Common questions.
Is this a proven, full-scale process?
How much energy does it actually save?
Can it integrate with our existing concentration train?
Interested in Lithium Dehydration & Brine Processing?
Let us scope it.
License the solution or deploy it as a turnkey plant. Either way, send the stream or the spec and we will tell you, honestly, what is proven and what is still in development.