Method for preparing iron-based magnetic activated carbon by compound enzyme catalyzed activation of kudzu root waste residue
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, increased environmental conditions, increased production costs, etc., to achieve less usage, uniform distribution, The effect of environmental protection reduction
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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] In step (1), wash 4.0g 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, grind them with a pulverizer, and then sieve them through a 40-mesh molecular sieve to obtain the particle size The kudzu root waste residue of less than 40 meshes is packed in plastic bags and set aside.
[0025] (2) Activation of kudzu root waste residue
[0026]In step (2), after step (1) is completed, the raw material (g) of kudzu root solid waste treated according to step (1): enzyme (g): water (ml) ratio is 1:0.35:10, so Described enzyme is the compound enzyme of cellulase, ligninase and pectinase, and described compound enzyme is cellulase (g): ligninase (g): pectinase (g) ratio is 1:2 ...
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): water (ml) ratio 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 is adjusted t...
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 the 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 ratio of water (ml) is 1:0.6:15, 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 in water bath temperature for 8h, the mass 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 magnetizer Fe 2...
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