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This unique form of CO2 allows increased solubility and a high diffusivity coefficient in raw materials, making extraction more efficient and environmentally friendly than traditional methods.
Supercritical CO2 is obtained by increasing the pressure of carbon dioxide above 73 atm and its temperature above 31.1°C, until it reaches the supercritical state between a gas and a liquid, thus becoming an effective “powerful” solvent.
Thanks to these properties, supercritical CO2 penetrates to the heart of the material to extract the compounds of interest. By varying the extraction parameters (temperature, pressure, density, co-solvent), the properties of the CO2 can be modified, and the molecules or compounds extracted can be selected according to their chemical nature.
Supercritical fluids are used as effective solvents in processes such as extraction, impregnation, particle formation (SAS, PGSS, RESS), formulation, sterilization, coating of compounds, extraction of active ingredients, cleaning and chemical reactions, and others to be discovered.
The final product is not altered by heat and remains free of contaminants, guaranteeing optimum quality.
Operating costs are reduced thanks to the CO2 recycling loop, the low cost of CO2, reduced process time, low temperature, and the consumption reduction system available on XL models.
By offering an alternative to petroleum solvents, supercritical CO2 reduces health and environmental risks, thus contributing to your CSR policy.
This process respects the environment by using recovered and recycled CO2, contributing to greener production.
This solvent is “green” because the CO2 used in the process is a recovered product. It is itself a co-product generated during certain industrial processes. It is therefore easily recovered and reused for future extractions. This method requires less energy and resources than a conventional process. As well as being more environmentally friendly, supercritical CO2 also offers other economic advantages. It is more cost-effective than traditional chemical solvents, which can leave undesirable chemical residues in the final products. Supercritical CO2 leaves no residue, simplifying post-processing.
Supercritical CO2 is already used in many industries, including food production, pharmaceuticals and perfumery. However, its development potential is still immense and could be used in many other sectors.
Supercritical CO2 represents a unique opportunity to build a greener, more economical future. It’s important to continue exploring and developing this technology to ensure a more sustainable future for generations to come.
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