| 摘要 |
PURPOSE:To produce manure by using domestic animal dung free from offensive odor as a raw material. CONSTITUTION:Fermentation bacteria are added to starch residue which is incidentally produced in a stage for producing starch from potatoes and starch residue is fermented. Then water is passed through it to extract an aq. soln. of the raw material of citric acid. Thereafter moisture contained in the remaining residue is removed. Manure is produced by mixing domestic animal dung such as fowl droppings with the residue from which moisture is removed. |
