FIELD: chemistry.
SUBSTANCE: invention relates to a process for extracting heavy metal ions from aqueous solutions. Method comprises extracting of vegetable oils with extractant containing fatty acid, with the pH of aqueous solutions, equal to 9-11. Then occurs sedimentation of the formed system with its delamination and phase separation. In this settling system lead to the formation of three phases: a top - the oil, which is a regenerated extractant bottom - water, and the intermediate between them - a gel consisting of water, oil and comprising a net-like structure hydroxocomplexes heavy metals. A gel mass is dried at a temperature of 100-300 °C to form nanocrystals of heavy metal oxides.
EFFECT: technical result consists in the cleaning efficiency of aqueous solutions of metals with the use of renewable, non-toxic and inexpensive extracting effective.
1 cl, 6 dwg, 1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| EXTRACTION OF IRON IONS FROM WATER SOLUTIONS WITH VEGETABLE OILS | 2012 |
|
RU2491977C1 |
| EXTRACTION OF ZINC IONS FROM WATER SOLUTIONS WITH VEGETABLE OILS | 2012 |
|
RU2499063C2 |
| METHOD OF PURIFYING NICKEL ELECTROLYTE FROM IMPURITIES OF IRON (III), COBALT (III) AND COPPER (II) BY EXTRACTION | 2015 |
|
RU2604289C1 |
| EXTRACTION OF COPPER FROM AQUEOUS SOLUTIONS USING PLANT OILS | 2011 |
|
RU2481409C1 |
| METHOD OF EXTRACTING IRON (III) AND COPPER (II) FROM AQUEOUS SOLUTIONS WITH A MIXTURE OF TRIETHANOLAMINE AND OLEIC ACID IN KEROSENE | 2015 |
|
RU2591915C1 |
| METHOD OF EXTRACTION OF IONS OF IRON, ZINC, COPPER AND MANGANESE | 2006 |
|
RU2338801C2 |
| METHOD FOR SELECTIVE EXTRACTION OF IRON (III) AND COPPER (II) FROM AQUEOUS SOLUTIONS | 2019 |
|
RU2702185C1 |
| METHOD OF PURIFYING NICKEL ELECTROLYTE FROM IMPURITIES OF IRON (III) AND COPPER (II) BY EXTRACTION WITH MIXTURE OF OLEIC ACID AND TRIETHANOLAMINE | 2015 |
|
RU2604286C1 |
| EXTRACTION OF LEAD IONS FROM AQUEOUS SOLUTION BY VEGETABLE OILS | 2012 |
|
RU2501868C2 |
| METHOD FOR SELECTIVE EXTRACTION OF ZINC (II) AND MANGANESE (II) FROM AQUEOUS SOLUTIONS | 2019 |
|
RU2702182C1 |
