Obtaining Sapropel-Based Organomineral Fertilizers from the Mixed Acids Spent in Producing Nitrocellulose

Abstract

Abstract Basic nitrocellulose wastes are spent mixed acids. Neutralizing them with potassium hydroxide and/or ammonia, or ammonia water produces nitrogen or nitrogen-potash mineral fertilizers sought after in the agro-industrial complex of the Russian Federation. However, using a crystalline fertilizer leads to some difficulties with transporting, storing, or applying them to the fields. Granulation is the preferable solution aimed at reducing the caking ability and uniformly dosing the fertilizers. This present study is aimed at granulating mineral nitrogen and nitrogen-potash fertilizers mixed with lake sapropel in different proportions. Sapropel is a natural binder in the mixture, it is also a source of organic and additional mineral substances, and it reinforces mineral fertilizers. Technology used to manufacture granulated organomineral fertilizers includes neutralizing the mixed acids spent in producing nitrocellulose, mixing with sapropel in given proportions, followed by granulating the obtained mixture on a screw granulator. In terms of containing In terms of nutrients contained in them, the most optimal is the mass relation of mineral fertilizer: sapropel in a mixture as 70-80 : 20-30, while in case of using the fertilizer as an ameliorant, it should be 10-20 : 80-90. Different component proportions in the mixture were considered.