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Processing & Handling :: Separation (Liquid-Liquid & Gas-Liquid)

February 1, 2010

Supercritical CO2: A Green Solvent

Carbon dioxide, in its supercritical state, is being used to replace conventional organic solvents in chemical processes

Many reactions, extractions, separations and other operations in the chemical process industries (CPI) involve the use of organic solvents. In addition to handling and disposal issues, organic solvents can pose a number of environmental concerns, such as atmospheric and land toxicity. In many cases, conventional organic solvents are regulated as volatile organic compounds (VOCs). In addition, certain organic solvents are under restriction due to their ozone-layer-depletion potential. Supercritical carbon dioxide is an attractive alternative in place of traditional organic solvents.

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