Flash Joule Heating (FJH) Method for treating process waste streams

[Astronuc]

I caught the tail end of a video about a new application for treating chemical or process waste, which is applied to 'red' mud or contaminated bauxite residue, but the person of interest mention recovering critical minerals from consumer electronics, as well as treating mine tailings and processing ores of rare earth elements.

What I found so far is the following: New electrical flash method rapidly purifies red mud into strong ceramics, aluminum feedstock
https://news.rice.edu/news/2025/new...es-red-mud-strong-ceramics-aluminum-feedstock

“Our research presents a potential game-changing solution for the red mud crisis,” said James Tour, the T.T. and W.F. Chao Professor of Chemistry, professor of materials science and nanoengineering and the study’s corresponding author. “This advance is massive from an industrial perspective, turning what was once a toxic liability into a valuable asset in under one minute.”

I have seen presentations on magnetophoresis and electrophoresis (or some combination) of rare earth solutions. I'm not sure how the different processes compare.