Justina Deveikytė, Paulina Družaitė, Algirdas Vaičaitis and Mykolas Mažukna from Vytautas Magnus University in Lithuania made up Team BioCity Cowboys.
Nowadays a large part of biodegradable waste (collected with general waste from citizens), which could be used efficiently, ends up in common landfill sites, where it rots without any utilization.
The team's competition entry was about a network of biofermentors, which would accelerate a compost-making process. Their plan included the installation of biofermentors throughout densely populated urban areas (in cities, near rubbish bins of apartment buildings). People, who live there, would be able to throw away their biodegradable organic waste into reactors and thus contribute to the creation of compost – valuable natural fertilizer.
This would create a closed loop, in which valuable materials would be re-used to create a useful product. The compost, made of biodegradable organic waste in the team's suggested biofermenters, would be collected by employees of private business companies, or municipal services and sold to private buyers, farmers, and agriculture companies, who are interested in the usage of natural fertilizers.
