A method for reducing the activity of heavy metal ions in livestock and poultry manure by adding ethionyl nitrogen
A technology of heavy metal ions and livestock and poultry manure, applied in organic fertilizers, climate change adaptation, fertilization devices, etc., can solve the problems of difficult plant treatment, high economic cost, low economic cost, etc., and achieve wide source of raw materials and good industrial feasibility , The effect of simple process
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Embodiment 1
[0021] Under the condition of constant turning or stirring, spray the ethion nitrogen aqueous solution into the fresh goose manure, the mass concentration of the ethion nitrogen aqueous solution is 20%, the application amount is to add 1.5g ethion nitrogen per 1000kg of raw materials, and control the pH value=6.2 , and then left to stand for 2 hours to passivate the exchangeable heavy metal ions in the feces through a complex reaction with ethionyl nitrogen, and the ion activity is reduced. The passivation effect is shown in Table 1.
Embodiment 2
[0023] Under the condition of constant turning or stirring, spray the ethion nitrogen aqueous solution into the fresh goose manure, the mass concentration of the ethion nitrogen aqueous solution is 20%, and the application amount is to add 2.0g ethion nitrogen per 1000kg of raw materials, and control the pH value=6.2 , and then left to stand for 2 hours to passivate the exchangeable heavy metal ions in the feces through a complex reaction with ethionyl nitrogen, and the ion activity is reduced. The passivation effect is shown in Table 1.
Embodiment 3
[0025] Under the condition of constant turning or stirring, spray the ethion nitrogen aqueous solution into the fresh goose manure, the mass concentration of the ethion nitrogen aqueous solution is 20%, the application amount is to add 3.0g ethion nitrogen per 1000kg of raw materials, and control the pH value=6.2 , and then left to stand for 2 hours to passivate the exchangeable heavy metal ions in the feces through a complex reaction with ethionyl nitrogen, reducing its biological activity. The passivation effect is shown in Table 1.
[0026] The passivation effect of heavy metals is shown in Table 1, taking the goose manure without passivating agent as a control.
[0027] Table 1 Passivation effect of heavy metal passivators on exchangeable heavy metals in goose manure
[0028]
[0029] It can be seen from Table 1 that the passivation effect of ethyl disulfide on the exchangeable Mn, Zn, Cu and Cr in livestock and poultry manure is significant, and the passivation rate of...
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