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    Monash critical minerals recovery: hydrometallurgy takeaways for plant design

    January 21, 2026|

    Reviewed by Joe Ashwell

    Monash critical minerals recovery: hydrometallurgy takeaways for plant design

    First reported on Australian Mining

    30 Second Briefing

    Researchers at Monash University have developed a hydrometallurgical process to recover high‑purity critical metals from spent lithium‑ion batteries using greener reagents than conventional strong mineral acids. Led by PhD student Parisa Biniaz and Dr Parama Banerjee, the lab‑scale method targets elements such as lithium, cobalt and nickel from shredded cathode material while minimising secondary waste streams. The approach points to lower‑impact recycling flowsheets that could reduce reliance on primary ore for battery metals and change leach chemistry assumptions in future plant design.

    Technical Brief

    • Hydrometallurgical route reportedly operates at relatively low temperature and atmospheric pressure, reducing energy demand.
    • Monash team leaches shredded cathode “black mass” directly, avoiding prior high‑temperature smelting or calcination.
    • Greener lixiviants are organic‑based reagents, replacing concentrated sulphuric or hydrochloric acid typically used industrially.
    • Process flowsheet includes sequential leaching, impurity removal and solvent extraction/precipitation to isolate individual metals.
    • Reported metal products achieve “battery‑grade” purity suitable for direct reuse in cathode precursor manufacture.
    • Research currently at laboratory scale, with no pilot‑plant validation or continuous operation data disclosed.
    • Methods rely on controlled pH and redox conditions, implying tight process control requirements for scale‑up.
    • Potential application is retrofitting existing LIB recycling plants with alternative leach circuits to cut acid consumption.

    Our Take

    With critical minerals already flagged in our coverage as facing regulatory and land-access bottlenecks in Australia, lab-scale recovery advances at Monash University will only translate to impact if they are designed to work within slower project-approval timelines and constrained drilling programs.

    Among the 61 keyword-matched pieces on critical minerals and lithium-ion batteries, most focus on upstream supply and permitting, so a university-led recovery route positions Monash as one of the few actors in our database targeting end-of-life battery material flows rather than new mine output.

    If the Monash research can improve recovery rates from lithium-ion batteries, it effectively reduces primary critical mineral demand in Australia, which could marginally ease pressure on exploration and drilling capacity highlighted by the Australian Drilling Industry Association’s recent concerns.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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