Method for preparing activated carbon from corn stalk waste residue after xylitol preparation process
A technology for preparing activated carbon and corn stalks, which is applied in the field of agricultural waste recycling and reuse, can solve problems such as low added value, and achieve the effects of increasing quantity, increasing specific surface area, and enhancing impregnation effect.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0035]Add 5g corn stalk waste sugar slag to the crucible, take 0.06g boric acid, 10ml 50% phosphoric acid, under the uniform stirring of an automatic stirrer, soak in a constant temperature water bath at 85°C for 1.5 hours; take out the soaked sample, and then put it in 450°C After heat preservation in a muffle furnace for 1 hour, take it out and cool it, then grind it slightly for 5 minutes, wash it with hot water until it is neutral, dry it at 105 degrees, cool it and grind it to powder, and get 2.26g of powdered activated carbon with a specific surface area of 917m 2 / g, boil the powdered activated carbon in 1mol / L HCl solution for 1h, then wash the filtrate with water until it becomes neutral, and dry it at 105°C for 8h to obtain activated activated carbon, and the measured specific surface area is 1365m 2 / g, the pore size is 10-15nm, the yield of activated carbon is 45.2%, and the consumption of phosphoric acid is 1.3%.
[0036] When the activated carbon is applied to ...
Embodiment 2
[0038] Add 5g corn stalk waste sugar slag to the crucible, take 0.05g boric acid, 8ml 50% phosphoric acid, and soak in a constant temperature water bath at 80°C for 1 hour under the uniform stirring of an automatic stirrer; take out the soaked sample, and then put it in 500°C After keeping warm in a muffle furnace for 1 hour, take it out and cool it, then grind it slightly for 4 minutes, wash it with hot water until it is neutral, dry it at 110°C, cool it and grind it to powder, and get 2.235g of powdered activated carbon with a specific surface area of 1026m 2 / g, boil the powdered activated carbon in 1mol / L HCl solution for 1.1h, then wash the filtrate with water until it is neutral, and dry it at 105°C for 8.5h to obtain activated activated carbon, and the measured specific surface area is 1459m 2 / g, the pore size is 5-18nm, the yield of activated carbon is 44.7%, and the consumption of phosphoric acid is 1.35%.
[0039] When the activated carbon is applied to the decolo...
Embodiment 3
[0041] Add 5g of corn stalk waste residue into the crucible, take 0.07g of boric acid and 12ml of 50% phosphoric acid, heat it in a muffle furnace at 500°C for 1 hour, grind it slightly for 5 minutes, wash the neutral paper with hot water, and bake it at 100°C Dry and grind to powder to get 2.285g of powdered activated carbon with a specific surface area of 1083m 2 / g, boil the powdered activated carbon in 1mol / L HCl solution for 1.2h, then wash the filtrate with water until it is neutral, and dry it at 105°C for 8.5h to obtain activated activated carbon, and the measured specific surface area is 1356m 2 / g, the pore size is 5-15nm, the yield of activated carbon is 45.7%, and the consumption of phosphoric acid is 1.4%.
[0042] When the activated carbon is applied to the decolorization and detoxification of corn stalk weak alkali hydrolyzate, the amount of activated carbon added is 0.8% of the mass of the hydrolyzate, the decolorization temperature is 37° C., and the decolor...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More