Method for preparing iron-based magnetic activated carbon by catalytic activation of radix puerariae waste residue with compound enzyme
A magnetic activated carbon and catalytic activation technology, applied in chemical instruments and methods, inorganic chemistry, chemical industry, etc., can solve the problems of poor product quality, high production energy consumption, increased environmental conditions, etc., to reduce secondary pollution, excellent The effect of adsorption performance
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Embodiment 1
[0022] The specific steps of a method for preparing iron-based magnetic activated carbon by catalyzing and activating kudzu root waste residue with complex enzymes are as follows:
[0023] (1) Pretreatment of kudzu root waste residue
[0024] Wash 4.0 g of discarded tobacco leaves, dry them, place them in an oven, bake them in an oven at 80°C for 30 minutes, take them out, crush them with a pulverizer, and then sieve them through a 40-mesh molecular sieve to obtain kudzu root waste residue with a particle size of less than 40 mesh. Pack in plastic bags and set aside.
[0025] (2) Activation of kudzu root waste residue
[0026]After the first step (1) is completed, the Pueraria solid waste raw material (g):enzyme (g):water volume (ml) ratio after the treatment according to the first step (1) is 1:0.35:10, and the compound enzyme The ratio of cellulase (g): ligninase (g): pectinase (g) is 1:2:1. In the raw material pretreated in step (1), add enzyme and water first, then adju...
Embodiment 2
[0032] A method for preparing iron-based magnetic activated carbon by catalyzing and activating kudzu root waste residue with complex enzymes, the same as in Example 1, wherein:
[0033] In step (1), the kudzu slag mesh is selected as 100 mesh, the oven temperature is 85°C, and the drying time is 20 minutes.
[0034] In the (2) step, the composite enzyme is cellulase (g): ligninase (g): pectinase (g) mass ratio is 3:5:1, kudzu root solid waste raw material (g): enzyme (g): The volume (ml) ratio of water is 1:0.2:5, with H 2 SO 4 Adjust the pH of the solution to 4. After mixing evenly, enzymolyze and activate the kudzu root base material at a water bath temperature of 25°C for 36 hours. : 1, impregnation with intermittent stirring for 3h.
[0035] In the (3) step, the concentration of the magnetizer is 0.01mol / L, and the magnetizer Fe 2+ with Fe 3+ The molar ratio is 1.0, the molar ratio of Pueraria solid waste raw material mass and magnetizing agent is 1:0.005, and the pH...
Embodiment 3
[0038] A method for preparing iron-based magnetic activated carbon by catalyzing and activating kudzu root waste residue with complex enzymes, the same as in Example 1, wherein:
[0039] In step (1), the kudzu slag mesh is selected as 20 mesh, the oven temperature is 60°C, and the drying time is 60 minutes.
[0040] In the (2) step, the composite enzyme is cellulase (g): ligninase (g): pectinase (g) mass ratio is 1:1:1, kudzu root solid waste raw material (g): enzyme (g): the volume ratio of water (ml) is 1:0.6:15, and the pH of the solution is adjusted to be 8 with NaOH. After mixing evenly, enzymolysis and activation of kudzu root base material at 50° C. of water bath temperature for 8 h, the quality of kudzu root solid waste raw material ( g) : The volume (ml) ratio of zinc chloride solution with a mass concentration of 25% is 1:3, and the impregnation is intermittently stirred for 0.5h.
[0041] In the (3) step, the concentration of the magnetizer is 0.03mol / L, and the ma...
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