There are glass and silver tea infusers.
"Repurposed beer yeast encapsulated in hydrogels may offer a cost-effective way to remove lead from water" https://phys.org/news/2024-05-repurposed-beer-yeast-encapsul...
"Yeast-laden hydrogel capsules for scalable trace lead removal from water" (2024) https://pubs.rsc.org/en/content/articlelanding/2024/su/d4su0...
.
"Application of brewing waste as biosorbent for the removal of metallic ions present in groundwater and surface waters from coal regions" (2018) https://www.sciencedirect.com/science/article/abs/pii/S22133...
https://ethz.ch/en/news-and-events/eth-news/news/2024/03/tur... :
> Protein fibril sponges made by ETH Zurich researchers [from whey protein] are hugely effective at recovering gold from electronic waste.
There are glass and silver tea infusers.
"Repurposed beer yeast encapsulated in hydrogels may offer a cost-effective way to remove lead from water" https://phys.org/news/2024-05-repurposed-beer-yeast-encapsul...
"Yeast-laden hydrogel capsules for scalable trace lead removal from water" (2024) https://pubs.rsc.org/en/content/articlelanding/2024/su/d4su0...
.
"Application of brewing waste as biosorbent for the removal of metallic ions present in groundwater and surface waters from coal regions" (2018) https://www.sciencedirect.com/science/article/abs/pii/S22133...
.
https://ethz.ch/en/news-and-events/eth-news/news/2024/03/tur... :
> Protein fibril sponges made by ETH Zurich researchers [from whey protein] are hugely effective at recovering gold from electronic waste.