Method for remedying Zn-Cd compound contaminated soil through cooperation of biomass charcoal and plant intercropping
A technology of biomass charcoal and compound pollution, applied in the restoration of polluted soil, etc., can solve the problems of inability to guarantee the economic interests of farmers, long restoration period, etc., and achieve the effect of improving food safety, good pore structure, and good physical and chemical properties.
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Embodiment 1
[0036] The preparation process of goat manure-based biochar is as follows: goat manure is removed from impurities, air-dried naturally, ground to a particle size of less than 20 mesh, pyrolyzed in a pyrolysis furnace at 500°C for 1 hour under nitrogen-filled conditions, and cooled to room temperature Go through an 80-mesh nylon sieve to obtain sheep manure-based biochar, and its basic physical and chemical properties are shown in Table 2.
[0037] Table 2 Basic physical and chemical properties of sheep manure-based biochar
[0038]
[0039] Such as figure 1 As shown, it can be clearly seen by an electron microscope that the group structure between the sheep manure-based biochar particles prepared by the present invention presents an irregular flocculent and not smooth state, and the spacing is tight, and there are protrusions on the surface, and the specific surface area Large, good pore structure, loose structure.
[0040] The surface functional groups of sheep feces-bas...
Embodiment 2
[0052] With embodiment 1, difference is that the addition of sheep manure base biochar is the 2% (dw / dw) of zinc cadmium composite pollution soil quality among the embodiment 2, i.e. 80g.
Embodiment 3
[0054] With embodiment 1, difference is that the addition of sheep manure base biochar is the 5% (dw / dw) of zinc cadmium composite pollution soil quality among the embodiment 3, i.e. 200g.
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