GREEN SOLVENTS

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GREEN SOLVENTS-

Green solvents are environmentally friendly solvents, which are derived from the processing of agricultural crops.Green solvent or also known as bio-solvent is typically an alternative to the conventional solvents which is available in the market. Green solvents reduces the environmental impact resulting from the use of organic solvents in chemical production. 


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Some important green solvent which are currently available in the industry are-

1.      Ethyl lactate
2.      Glycerol
3.      Supercritical fluids
4.      Ionic liquid
5.      Bio ethanol
6.      Terpene
7.      Polyether
8.      Siloxane polymer
9.      Dibasic esther etc.

GENERAL PROPERTIES OF GREEN SOLVENTS-


Green solvent has a lower environmental impact compared to other conventional solvents. Some general properties of green solvent are-
1.      Green solvents are completely biodegradable.
2.      Green solvents are can be easily recycled.
3.      Green solvents are non-corrosive.
4.      Green solvents are non-carcinogenic.
5.      Green solvents are produced from renewable sources.
6.      Green solvents are environmental friendly solvent.

Image result for green solventsPRODUCTION METHODS OF GREEN SOLVENT-

The four methods which are generally used for producing green solvents are:
1.      Substitution of hazardous solvents with ones that show better environmental, health and safety properties.
Example: Ability to biodegrade or ability to reduce ozone depletion.

2.      Production of green solvents using renewable re-sources.
Example: Fermentation of agricultural waste to produce ethanol.

3.      Substitution of organic solvents with environmentally harmless supercritical fluids.
Example: Usage of supercritical CO2 instead of CFC.

4.      Substitution of organic solvents with ionic liquids of low volatility.
Example: Lowering emission of volatile compounds to the atmosphere. (7)

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