How do you supply CO2 to a greenhouse

The average concentration of carbon dioxide in the atmosphere is 300-330 mg/L, with small fluctuations. In greenhouse vegetable production in winter and spring, facilities are often kept in a closed state for heat preservation, lacking internal and external gas exchange, and the carbon dioxide concentration fluctuates greatly. Especially at noon, the concentration drops, close to or even below the compensation point, and the carbon dioxide is in a deficit state. Today I will introduce to you several methods of replenishing carbon dioxide, as well as the advantages and disadvantages of each method.

Cast the "dry ice" method

That is, the release of solid carbon dioxide. The solid carbon dioxide is sublimated in the shed and converted into gaseous carbon dioxide for absorption. Advantages: simple operation, easy control, sufficient gas volume; Disadvantages: high cost, poor safety, strict storage and transportation conditions (requires refrigerated transportation and storage).

Applying more organic fertilizers

By adding organic fertilizer, microbial fermentation and decomposition are used to produce carbon dioxide. Advantages: Raw materials can be obtained locally and the cost is low; Disadvantages: Slow gas production, inability to control the gas volume, and easy production of harmful gases such as ammonia.

Combustion method

It mainly produces carbon dioxide gas by burning natural gas, liquefied gas, biogas, briquettes and other fuels. Advantages: Large gas supply, easy operation; Disadvantages: Large infrastructure investment, difficult to control the gas volume, easy to produce harmful gases such as carbon monoxide and sulfur dioxide, harming the growth of fruit trees.

Soil granular air fertilizer

Products include: "Double Micro", carbon dioxide granule gas fertilizer, etc. It is a biogas fertilizer that utilizes microbial resources and is produced by industrial microbial fermentation technology. After being applied to the soil, it can produce carbon dioxide gas; advantages: safe and reliable to use, The method is simple, does not require energy and auxiliary materials, does not require special equipment, has a small application amount, is convenient for storage and transportation, is non-toxic, does not pollute the environment, and can also improve the soil; disadvantages: the soil must maintain a certain humidity.

Chemical reaction method

Carbon dioxide is produced using the acid-base reaction of baking soda and citric acid in a carbon dioxide generator. Advantages: easy to operate, fast gas production, and the gas output can be controlled as needed. Disadvantages: changing raw materials

Would you like more informatoin about the chemical reaction method? please kindly contact us: [email protected], I will introduce more informatoin about our stainless steel diy co2 generator.