Method capable of improving methane yield in sludge anaerobic digestion process and enhancing heavy metal stabilization process
An anaerobic digestion and heavy metal technology, applied in the direction of physical/chemical process catalysts, other chemical processes, chemical instruments and methods, etc., can solve the problems of affecting the efficiency of sludge anaerobic digestion, reducing the activity of methane bacteria, and limited organic matter content, etc. Achieve superior adsorption performance, uniform distribution, and high specific surface area
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[0028] Embodiment 1: The specific steps of this embodiment are as follows:
[0029] Activated carbon pretreatment: straw soaked in ZnCl 2 Activation in solution (straw and ZnCl 2 The mass ratio is 1:2), magnetically stirred for 7 hours and then centrifuged (4000r ·min -1 ), oven drying. After drying, the sample was carbonized for 180 minutes in an OTF-1200x vacuum tube furnace. Set the carbonization temperature to 550℃, N 2 As protective gas, the heating rate is 20℃·min -1 . The prepared crude sample was washed repeatedly with deionized water and dried at low temperature to constant weight.
[0030] Preparation of activated carbon loaded with MnO nanomaterials (BC-MnO): the pretreated activated carbon is milled through a 100 mesh sieve, and 6g of activated carbon is soaked in KMnO 4 In the solution, make BC and KMnO 4 The mass ratio is 1:15. The suspension was sonicated at room temperature for 3 hours and then dried in an oven. After drying, it was transferred to a tube furnace f...
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