High-quality harmless utilizing method of hyperaccumulator
A kind of ultra-enrichment plant and harmless technology, which is applied in the field of deep processing and utilization of hyper-accumulation plants, can solve the problems of long preparation time, large-scale application limitation, reactor tube wall corrosion, etc., and achieve simple process flow and resource utilization. The effect of chemical treatment
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[0047] The concrete method steps of utilizing hyperaccumulator plant to prepare activated carbon are:
[0048] (1) Pretreatment: pulverize the centipede grass, dry it at 105°C for 24 hours, pass it through a 100-mesh sieve, and store it sealed for later use;
[0049] (2) Carbonization: carbonize the centipede grass pulverized material in step (1) in a nitrogen atmosphere (such as a muffle furnace, etc.), wherein the carbonization temperature is 500 ° C, and the carbonization time is 30 minutes;
[0050] (3) Impregnation: impregnate the carbonized material in step (2) with an alkaline solution with a mass fraction of 50%, and uniformly mix once every 8 hours during this period, wherein the mass ratio of the carbonized material to the alkaline activator is 1:4;
[0051] (4) Drying: After soaking for 24 hours, dry at 105°C for 12 hours to obtain a mixture of carbonized material and alkaline active agent;
[0052] (5) Activation: Activate the carbonized material and the alkaline ...
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