National projects


plant-based public urinal

To coop with climate change cities invest in green infrastructure – horizontal and vertical green areas. Green areas need a lot of water for irrigation and nutrients for growth. alchemia-nova´s green walls run on wastewater, using contaminants as plant nutrients, thereby cleaning the water for re-use.

“LooPi – the plant-based public urinal for all genders” is the latest innovation in the series of functional green walls. LooPi is a combination of wastewater management & green infrastructure: wastewater is treated via the integrated green wall and re-used for flushing.

public urinal LooPi

Advantages of LooPi:

  • nutrients from urine are stored in biochar and made available for agriculture
  • being gender neutral
  • saves up to 90% of water compared to conventional urinals
  • capturing CO2 from the atmosphere
  • cooling and humidifying surrounding air
  • reducing noise pollution
  • bringing biodiversity into the city

Technical data:

  • Size: 4,20 m l x 3,05 m h x 2,40 m w
  • Weight: 13,5 t
  • Active root volume: 4 m3
  • Capacity: 30 L urine / 24 hr
  • Energy demand: approx. 1 kWh/day

LooPi is currently in status prototype testing.
LooPi has been developed by alchemia-nova with the support of EOOS and the University of Natural Resources and Life Sciences, Vienna

LooPi at Nordwestbahnhof


Project leader
alchemia-nova GmbH

Project partner
University of Natural Resources and Life Sciences, Vienna: Institute of Soil Research (IBF); Institute of Sanitary Engineering and Water Pollution Control (SIG)
Third party costs partner: EOOS Design GmbH

Project status
Duration: 10/2019 – 12/2021 (27 months)

Call: Förderprogramm Stadt der Zukunft, 6. Ausschreibung.
Sponsors: Austrian Ministry for Transport, Innovation and Technology with The Austria Research Promotion Agency (FFG)
Research category: experimental development
Rate: 60%

Total costs: € 468.649,00
Total funding: € 281.189,00
Funding recipient: alchemia-nova GmbH