Spent brewer’s yeast, a waste stream itself, can be used to selectively recover metals from mixed solutions in a process called biosorption. By optimizing the experimental conditions at laboratory scale, high recovery rates for aluminum, copper and zinc could be achieved in this environmentally friendly approach.

An open access article entitled “Spent brewer’s yeast as a selective biosorbent for metal recovery from polymetallic waste streams” was published in the peer-reviewed journal of Frontiers in Bioengineering and Biotechnology on 12 March 2024.

K1-MET GmbH, with Anna Sieber as a main author, was significantly involved in the writing of the paper.

Here you can find the link to the paper.