In order to establish a bio-based economy in rural areas, the VACO2 project is establishing a pilot plant for the recovery of ammonia using regional CO2 emissions and local aqueous waste streams. This project is being carried out as a transfer project to the ÖkoPro joint project. The process to be developed here serves to support the microalgae production to be developed in ÖkoPro by providing a pH-optimised and NH4 and CO2-enriched aqueous medium.