Preparation method of KOH-microwave activated corncob activated carbon for treating cationic dye-containing wastewater
A cationic dye and microwave activation technology is applied in the field of preparation of KOH-microwave activated corncob activated carbon, which can solve the problems that the adsorption performance of cations and organic pollutants needs to be improved, and achieve the effects of shortening preparation time, simple preparation process and low cost.
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[0024] Example 1:
[0025] A preparation method of KOH-microwave activated corncob activated carbon for treating wastewater containing cationic dyes, the steps are as follows:
[0026] (1) Wash the corncob with distilled water. Then, it is placed in a constant temperature blast drying oven to dry. Next, take the dried corncob and pulverize it with a pulverizer and pass it through a 50-mesh sieve, spread the sieved corncob powder evenly and place it in a vacuum drying box, and dry it at 60°C for 24 hours to remove the moisture of the raw material. . Finally, the dried corncob powder is collected and placed in a desiccator for later use.
[0027] (2) Add 5 g of corncob powder to 100 mL of KOH solution with a mass fraction of 10 wt %, stir and mix uniformly.
[0028] (3) The mixture obtained in step (2) was placed in a round-bottomed flask with a volume of 250 mL, after adding magnetron, refluxed in a constant temperature water bath for 5 h at 80°C. After the reflux was comp...
Example Embodiment
[0034] Example 2:
[0035] A preparation method of KOH-microwave activated corncob activated carbon for treating wastewater containing cationic dyes, the steps are as follows:
[0036] (1) Wash the corncob with distilled water. Then, it is placed in a constant temperature blast drying oven to dry. Next, take the dried corncob and pulverize it with a pulverizer and pass it through a 50-mesh sieve, spread the sieved corncob powder evenly and place it in a vacuum drying box, and dry it at 60°C for 24 hours to remove the moisture of the raw material. . Finally, the dried corncob powder is collected and placed in a desiccator for later use.
[0037] (2) Add 5 g of corncob powder to 100 mL of KOH solution with a mass fraction of 10 wt %, stir and mix uniformly.
[0038] (3) The mixture obtained in step (2) was placed in a round-bottomed flask with a volume of 250 mL, after adding magnetron, refluxed in a constant temperature water bath for 5 h at 80°C. After the reflux was comp...
Example Embodiment
[0044] Example 3:
[0045] A preparation method of KOH-microwave activated corncob activated carbon for treating wastewater containing cationic dyes, the steps are as follows:
[0046](1) Wash the corncob with distilled water. Then, it is placed in a constant temperature blast drying oven to dry. Next, take the dried corncob and pulverize it with a pulverizer and pass it through a 50-mesh sieve, spread the sieved corncob powder evenly and place it in a vacuum drying box, and dry it at 60°C for 24 hours to remove the moisture of the raw material. . Finally, the dried corncob powder is collected and placed in a desiccator for later use.
[0047] (2) Add 5 g of corncob powder to 100 mL of KOH solution with a mass fraction of 10 wt %, stir and mix uniformly.
[0048] (3) The mixture obtained in step (2) was placed in a round-bottomed flask with a volume of 250 mL, after adding magnetron, refluxed in a constant temperature water bath for 5 h at 80°C. After the reflux was compl...
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