Clustering event: The use of deep eutectic solvents and ionic liquids for metal recovery

  • 11/05/2022
  • at 09:00
  • Online

Join the online clustering workshop on ‘’The use of Deep Eutectic Solvents and Ionic Liquids for metal recovery’’, organized by four H2020 projects in the circular economy (ION4RAW, CROCODILE, TARANTULA, PEACOC)!

Our clustering workshop schedule for May 11th, 2022 is coming soon!

On May 11th, 2022, ION4RAW together with CROCODILE, TARANTULA, PEACOC will organize a clustering event titled:  ‘’The use of Deep Eutectic Solvents and Ionic Liquids for metal recovery’’. The event brings together top research organizations as well as industrial partners to present the project results and the latest technological innovations using Deep Eutectic Solvents and Ionic Liquids for metal recovery.

About the event

The aim of the clustering event on Deep Eutectic Solvents and Ionic Liquids for separation and recovery of metals is to share and discuss the latest R&D results as well as challenges and opportunities at industrial level for the separation and recovery of metals.

Ionic liquids and deep eutectic solvents are exciting classes of solvents that possess unique properties. Ionic liquids are known for their negligible vapor pressure, wide liquid range, tunable solvating power, and high thermal stability. DES are a new type of green solvents and most of them are even biodegradable. Ionic liquids and deep eutectic solvents can replace the usually toxic and flammable organic solvents, reduce chemical waste and improve the safety of chemical processes and products. Moreover, they may offer potential as an environmentally sustainable alternative to conventional separation processes involving the use of aqueous acids or organic solvents. Due to these special properties, they have found a wide range of applications in fields, including hydrometallurgy. Ionic liquids and deep eutectic solvents can provide novel intensified separation and purification technologies that enable major contributions towards establishing the sustainable processes required for the future process industry.


The clustering event will take place online on May 11th, 2022 from 9:00 to 12:15 CEST. More than seven speakers from top research and technology organizations and business will take part in the event. The workshop program is broken down into three sessions:

  • The use of Deep Eutectic Solvents and Ionic Liquids in the context of EU-funded R&D projects (ION4RAW, PEACOC, TARANTULA, CROCODILE);
  • The use of Deep Eutectic Solvents and Ionic Liquids at industrial level (Solvionic, IOLITEC, FFI Ionix); and
  • Panel discussion on the challenges and opportunities for the use of Deep Eutectic Solvents and Ionic Liquids.

See the agenda


If you are interested in the topics of recycling, metals and innovation, this event is just for you. Reserve your online ticket here: link to registration

Learn more about the projects:


PEACOC aims at solving the current challenges that limit the recovery of Precious Metals at massive scale, while exploiting the vast potential of EU secondary resources. The project will research and demonstrate on a pre-commercial level, novel, effective, low-cost and environmentally friendly technologies for recovering gold, silver and Platinum Group Metals from complex waste mixtures. PEACOC aims at treating end-of-life products in Europe, including spent autocatalysts, low/mid-grade printed circuit board assembly (PCBA) (currently poorly valorized in the EU) and photovoltaic waste.

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The ION4RAW stands for ionometallurgy of primary sources for an enhanced raw materials recovery. The project proposes a new energy-, material- and cost-efficient mineral processing technology to recover by-products from primary sources by means of innovative Deep Eutectic Solvent (DES) ionic liquids and advanced electrochemical methods as an only step. ION4RAW will make an ambitious contribution to the EIP Raw Materials Strategic Implementation Plan unlocking the full potential of Europe’s inner wealth by converting new and currently unexploited resources into reserves.

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Due to the rapid electrification of mobility, the demand for cobalt is going to grow astronomically. Currently, 65% of global cobalt production occurs in the Democratic Republic of Congo, which has led the EC to define cobalt as a highly critical metal. Setting up an EU value chain for the primary production and recovery of cobalt is thus of strategic importance. The EU H2020 CROCODILE project, therefore, showcases an innovative metallurgical system, based on advanced pyro-, hydro-, bio-, iono- and electrometallurgy technologies, for the recovery of cobalt and the production of cobalt metal and upstream products. A wide variety of secondary and primary European resources will serve as feedstocks. CROCODILE will pro-actively engage with local and international civil society groups, in order to obtain and maintain the Social License to Operate for cobalt recovery and production.

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TARANTULA’s overarching objective is to develop a toolkit of novel, efficient and flexible metallurgical technologies with high selectivity and recovery rates with respect to W, Nb and Ta. As such, the project will promote (i) sustainable annual supply of secondary W at an amount equivalent to 50% of current EU W primary production, (ii) exploitation of Ta content equivalent to at least 120% of EU annual demand (iii) exploitation of Nb content equivalent to at least 5% of EU annual demand.

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