System for the capture and purification of CO2 and purification unit of said system

A system (1) for capture and purification of CO2, said system comprising:

• a gas inlet line (2);
• an accumulation unit (3), having an inlet (31) connected to said gas inlet line (2) and an outlet (32);
• a purification unit (4), having an inlet (41) connected downstream of said accumulation unit (3) and an outlet (42);
• and
• a storage tank (5), having an inlet (51) connected downstream of said purification unit (4), characterized in that said gas inlet line (2) further comprises a coupling means (20) coupled to a fermentation vessel, said coupling means comprising a cylindrical bellows (21), and said purification unit (4) comprises:
• a first filter (6) having a first container and a first filler material;
• a second filter (7) having a second container and a second filler material, downstream of said first filter (6);
• a third filter (8) having a third container (81) and a third filler material, downstream of said second filter (7), said third filter (8) having, additionally, a heating element (82) thermally coupled to said third filler material;
• and
• control means (9) of said heating element (82),
• wherein said first filler material is silica,
• wherein said second filler material is zeolite, and
• wherein said third filler material is a metal-organic framework modified with activated carbon.