Preparation method of nano activated calcium carbonate
A technology of activated calcium carbonate and nano-calcium carbonate, applied in the directions of calcium carbonate/strontium/barium, nanotechnology, chemical instruments and methods, etc., can solve the problem that the crystal growth of ultra-fine activated calcium carbonate is difficult to control, easy to produce wrapping, and one-time molding. The problem of large particles is to avoid growth and agglomeration, increase the ion concentration, and improve the adsorption and load capacity.
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example 1
[0016] Weigh 500g of activated carbon, place it in a pulverizer, and sieve it through a 120-mesh sieve to obtain powdered activated carbon. Pour the obtained powdered activated carbon into a beaker filled with 1200mL deionized water, and then move the beaker into a digital display speed measuring constant temperature magnetic stirring Add a sodium hydroxide solution with a mass fraction of 10% dropwise to adjust the pH to 9.6, then add 20 g of dopamine into the beaker at a temperature of 65 °C and a rotation speed of 800 r / min, and continue to stir and react at a constant temperature for 60 minutes until the reaction is completed. , dropwise add mass fraction of 8% hydrochloric acid, adjust the pH to neutral, and obtain a dopamine-modified activated carbon slurry; weigh 50g of dendritic lichen, pour it into a mortar, grind for 10min, and spread the material in the mortar evenly on the surface of the solid medium, and then transfer the solid medium into a constant temperature in...
example 2
[0018]Weigh 300g of activated carbon, place it in a pulverizer, and pass through an 80-mesh sieve after crushing to obtain powdered activated carbon. Add 10% sodium hydroxide solution dropwise to the agitator, adjust the pH to 9.2, then add 10 g of dopamine to the beaker at a temperature of 55°C and a rotation speed of 600 r / min, and continue stirring at a constant temperature for 45 minutes. At the end, add hydrochloric acid with a mass fraction of 8% dropwise, adjust the pH to neutral, and obtain a dopamine-modified activated carbon slurry; weigh 30g of dendritic lichen, pour it into a mortar, grind for 5 minutes, and evenly coat the material in the mortar Place the solid medium on the surface of the solid medium, then transfer the solid medium into a constant temperature incubator, and incubate at a constant temperature for 3 days at a temperature of 18°C, then rinse the surface of the medium with 300mL of deionized water to obtain a suspension of mycelia; Described solid m...
example 3
[0020] Weigh 400g of activated carbon, place it in a pulverizer, and pass through a 100-mesh sieve after crushing to obtain powdered activated carbon. Add 10% sodium hydroxide solution dropwise to the stirrer, adjust the pH to 9.4, then add 15g of dopamine into the beaker at a temperature of 60°C and a rotation speed of 700r / min, and continue stirring at a constant temperature for 50 minutes. At the end, add hydrochloric acid with a mass fraction of 8% dropwise, adjust the pH to neutral, and obtain a dopamine-modified activated carbon slurry; weigh 40g of dendritic lichen, pour it into a mortar, grind for 7 minutes, and evenly coat the material in the mortar Place the solid medium on the surface of the solid medium, then transfer the solid medium into a constant temperature incubator, and culture it at a constant temperature for 4 days at a temperature of 19°C, then rinse the surface of the medium with 400mL deionized water to obtain a suspension of mycelia; The described soli...
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