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Abstract image to represent bioleaching

Development of Bioleaching-based processes for the recovery of precious metals of processed waste from Superalloys


Innovate UK

Value to Coventry University:


Total Value to Coventry University:


Project Team:

Sebastien Farnaud 

John Graves

Derek Renshaw


Advanced Alloy Services


1 September 2023 - 30 June 2026

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In partnership with AAS, Coventry University are developing innovative and sustainable bioleaching-based processes to recover critical metals from superalloy by-products at AAS. The same team at Coventry University has already proven this technology successful for the recovery of metals with e-waste.


AAS requires the support of this KTP to adopt this 'world-changing' technology being developed by Coventry University to implement sustainable processes within the metal industry for efficient recovery of rare precious metals. Due to the ever-increasing global demand for metals which become rarer, and the poor recycling and recovery of metals, the metal industry is crying out for the development of sustainable, novel, efficient and environmentally friendly processes for better recovery of metals as part of a circular economy.

Bioleaching, which uses microorganisms to solubilise metals, offers a proven, sustainable alternative to recover the metals without incineration. However, the required expertise in microbiology and electrochemistry is currently missing at AAS. The embedding of bioleaching technology into AAS facilities will provide a novel capability and a competitive advantage.

Impact Statement: 

Development of new knowledge with commercial awareness and the ethical and environmental implications associated with long-term applications.


Conferences Presentation (stage 1) and Publications (stage 5-6) in high-quality peer-reviewed international journals such as Nature Climate, Environmental Innovation and Societal Transitions, Energy technology and also more specific journals such as Metals, Advances in Recycling of Valuable Metals and Frontiers in Microbiology

 Queen’s Award for Enterprise Logo
University of the year shortlisted
QS Five Star Rating 2023