Skip to content
Laboratory bench setup evaluating membrane separation on a critical-minerals process stream.

Solution · Critical Minerals

Rare Earths & Critical Minerals

The critical-minerals supply chain runs on difficult separations: closely related elements, dilute streams, and aggressive chemistries. Petro Sep is developing membrane-led separation and concentration steps that complement conventional hydrometallurgy and reduce its energy and reagent burden. This work is early and partner-led, run as feasibility studies on real process streams rather than offered as a finished product.

Readiness: In development

What you get

Outcomes on this vertical.

Supply-chain relevance
Strategic
Critical minerals underpin batteries, magnets, and defense supply chains. More efficient separation and concentration steps strengthen domestic and allied processing capacity.
Reduced energy and reagent load
Targeted
Membrane concentration aims to cut the water, heat, and chemicals that conventional hydrometallurgical steps consume, with the actual reduction established per stream.
Engagement model
Feasibility first
We start with a scoped feasibility study on your stream, so the chemistry and economics are understood before any pilot or capital commitment.

The separation problem

Rare earths and other critical minerals are hard to separate precisely because the target species are chemically similar to one another and arrive in dilute, complex streams. Conventional processing relies on long solvent-extraction trains and large reagent inventories. Membrane separation and concentration can complement those trains: concentrating dilute feeds before extraction, recovering process water and solvents, and tightening the streams that the downstream chemistry has to handle. The aim is not to replace established hydrometallurgy wholesale but to remove the most energy- and reagent-hungry bottlenecks within it.

An honest development position

This is development-stage work, and we describe it that way on purpose. Critical-minerals chemistries vary widely between deposits and process routes, so a generic claim would be misleading. We engage through feasibility studies and bench evaluation on the actual stream, building evidence before anyone talks about pilots or plants. For developers, investors, and agencies working to onshore critical-minerals processing, that means a low-commitment, evidence-led starting point rather than an over-promised package.

Frequently asked

Common questions.

Is this commercially available?
No. It is development-stage. We engage through feasibility studies and bench work on your specific stream. We are clear about that so partners can plan accordingly.
What does Petro Sep bring that conventional processing lacks?
Decades of membrane separation experience applied to concentration, water recovery, and solvent recovery steps that can sit around existing hydrometallurgy and reduce its energy and reagent demand.
How do we start a conversation?
With a scoped feasibility study on a sample of your stream. That establishes whether a membrane step is worth pursuing before any pilot or capital is committed.

Interested in Rare Earths & Critical Minerals?
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.