The accumulation of carbon dioxide (CO₂) in indoor spaces without adequate ventilation can exceed standard maximum thresholds by up to six times and trigger health problems. To address this, the LEQUIA research group proposes an efficient, low-cost and modular system, easily integrable with current systems, to be able to capture and concentrate this CO2, generating clean air along with a constant CO₂ stream of up to 95%.
MICRO‑IN is a compact system designed to capture carbon dioxide from indoor environments with poor ventilation, where CO₂ levels often exceed recommended limits. The device alternates between an adsorption cycle, which removes CO₂ from indoor air, and a desorption cycle, which releases the captured gas as a highly concentrated CO₂ stream. During adsorption, air passes through a solid adsorbent that traps CO₂ and returns cleaner air to the room. In the desorption phase, controlled heating and vacuum conditions enable the release of concentrated CO₂, while transitional steps manage heating and cooling between cycles. The technology is suitable for enclosed spaces such as classrooms, offices, or transport vehicles. MICRO‑IN aims to offer a modular and scalable solution for improving indoor air quality while generating a concentrated CO₂ output for potential reuse or controlled handling.
Competitive advantages
Objective market
Potential applications
Intellectual property status
Granted Patent
Patent number : EP25382564
Where : Europe
Current development status
Working prototypes
Desired business relationship
Technology development
Adaptation of technology to other markets
Other : Pilot testing
The University of Girona (UdG) by means of its Research & Technology Transfer Office (TTO) provides services to 117 research groups, 42 of which have been recognized as Consolidated Research Group of Catalonia and 4 among them have been incorporated into the TECNIO network, the top Catalonia's Government excellence research network.
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