Challenge description

Increasing amount of green bio waste generated in urban spacescould be used in ways that sequester carbon and help public authorities to design a greener city while contributing other benefits such as cleaner air, increased biodiversity and combating heat island effects. One of the potentialy interesting solutions is production of biochar. Biochar can be introduced into substrate or it could  be potentially have other applications (e.g. building materials).

Challenge vision

Biochar is known to be a very good carbon sink in agriculture and can transform a field from a carbon emitter to a carbon sink. These experiences would now be transferred to the urban environment. Green roofs and walls are becoming more and more vital for urban landscapes, as they have a multifaceted benefits. The addition of biochar into the substrate used for these areas would additionally improve benefits.