From what I could find DLE is what the industry is trending towards because it means you don’t need to builds ponds, lose water through evaporation and slap the brines with all kinds of chemicals to break down those impurities. For extraction you do have to throw some kind of solvent at the water that will then be brought back down though, so what is the effect of that?
They also claim they can extract from granite “using an environmentally-friendly method”. Don’t personally associate granite with those words so that’ll be interesting.
Edit: They replied to my question at least:
One of the key things about adsorbtion [sic] and membrane technologies is that they do not leave anything in the tail brine. Hence the water goes back underground as it was before - minus the lithium.
Here’s a useful link: https://www.eramet.com/en/activities/innovate-design/eugeli-project
//flashbacks of the absolute horror show that is fracking//
Looks like its just a pair of geothermal boreholes (also only 1km deep, as opposed to several kms for shale).