The WatAIR prototype to be developed/improved is a low-cost closed loop solution for removing CO2 from ambient air for use as algae feedstock. The WatAIR prototype is based around two reactors: CO2 capture and CO2 utilization.

In this design, ambient air is blown in to fluidize sorbent particles to
selectively capture CO2. Once saturated, the sorbent is hydrated to
release captured CO2 and output carbonated water for cultivating algae. The sorbent is then dried and the cycle repeats.