FIELD: chemistry.
SUBSTANCE: invention relates to chemical engineering of inorganic substances, specifically to a method for producing iodine from natural waters, which can be used in pharmaceutical and chemical industry. Method involves extraction of acidified, neutral or slightly alkaline solution containing elemental iodine, liquid subcritical carbon dioxide at temperature of 0–20 °C and excess pressure of 50–200 atm for 15 minutes, with ratio of phases of water and carbon dioxide from 1:9 up to 9:1 by volume.
EFFECT: invention increases degree of extraction of iodine, as well as exclude from process fire hazardous organic extractants and diluents, which provides environmental safety of method.
1 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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|
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