The University of Belgrade’s Institute for Multidisciplinary Research invented an urban photo-bioreactor. Liquid 3 cleans the air and serves as a bench in the Belgrade city centre.

It’s a tank filled with microalgae, a solar panel on the top generates electricity for USB charging ports for citizens and a pump that pumps air into the tank where the algae process the CO² and produce Oxygen.

https://balkangreenenergynews.com/liquid-tree-to-combat-air-pollution-in-belgrade/

    • RiceMunk@sopuli.xyz
      0·
      8 months ago

      Can’t charge a phone using a tree.

      …well, unless we stick a solar panel + charging port on it, like with this thing.

      • gapbetweenus@feddit.de
        0·
        8 months ago

        unless we stick a solar panel + charging port on it,

        Even as a joke, that seems cheaper and you need far less resources. My question was more about if it’s “clears” air better than just a tree.