| 摘要 |
PURPOSE: A method for preparing an amide acid liquid fertilizer is provided, to obtain an amide acid liquid fertilizer in a low cost by recycling the organic material waste. CONSTITUTION: The method comprises the steps of adding 0.3-0.5 wt% of chymotrypsin to the organic material comprising the blood of animals, the dead body of animals or fish, the domestic animal waste and by-products; adding nitric acid or sulfuric acid (3-8 wt% if the purity of the acid is 48-51 %); adding water until the material to be processed is soaked; treating the obtained one at a temperature of about 120-130 deg.C and at a pressure of 2-4 atm for about 0.5-1 hours to liquefy it; and neutralizing the obtained one with calcium oxide to prepare an amide acid liquid fertilizer. |
