FIELD: filtering.
SUBSTANCE: invention relates to a method for purifying aqueous solutions from dimethylformamide by adsorption with activated carbon, including washing the activated carbon with distilled water and pretreating the activated carbon with a chemical reagent, wherein a solution of potassium dichromate with a concentration of 5% is used as a reagent, at a ratio of the weight of carbon in grams to the volume of solution in cm3 of 1:100, for 24 hours, followed by heating at a temperature of 200°C for 1 hour in air.
EFFECT: ensured purification of aqueous solutions.
1 cl, 3 ex, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PURIFICATION OF AQUEOUS SOLUTIONS FROM CAPROLACTAM | 2022 |
|
RU2802695C1 |
| METHOD OF PURIFICATION OF AQUEOUS SOLUTIONS FROM DIMETHYLAMINE | 2022 |
|
RU2814839C1 |
| METHOD OF PURIFICATION OF AQUEOUS SOLUTIONS FROM METHYLAMINE | 2022 |
|
RU2804822C1 |
| METHOD FOR OBTAINING MODIFIED ACTIVATED CARBON | 2022 |
|
RU2794429C1 |
| METHOD FOR PURIFYING AQUEOUS SOLUTIONS FROM SULPHATE IONS | 2023 |
|
RU2815095C1 |
| METHOD FOR OBTAINING MODIFIED ACTIVATED CARBON | 2021 |
|
RU2760272C1 |
| METHOD FOR PRODUCING MODIFIED ACTIVE CARBON | 2020 |
|
RU2753039C1 |
| METHOD OF PRODUCING MODIFIED ACTIVATED CARBON | 2017 |
|
RU2676044C1 |
| METHOD OF PURIFICATION OF AQUEOUS SOLUTIONS FROM DIMETHYLAMINE | 2023 |
|
RU2815094C1 |
| METHOD FOR PRODUCING MODIFIED ACTIVATED CARBON | 2022 |
|
RU2804782C1 |
