Production of compound mineral fertilizers as a method of utilization of waste products in chemical company Alwernia S.A.

Abstract

The results of investigations on a possible utilization of waste products formed during the production of commercial and food inorganic salts are presented. Application of wastes in the production of compound fertilizers was suggested. The work covered a full research cycle starting from laboratory tests and ending on the production implementation. Fertilizer formulas were developed on the basis of laboratory tests. A possible production of fertilizers of suggested compositions was tested on a pilot plant scale. The compound fertilizer production with the use of waste raw materials was implemented in Chemical Company Alwernia S.A. It reduced the amount of wastes directed to industrial waste site.

Suspension Fertilizers: How to Reconcile Sustainable Fertilization and Environmental Protection

“…When classifying mineral fertilizers (Figure 1), various criteria can be used, the most important of which is the number of nutrients contained in them and their physical form [9]. Solid fertilizers are granules and powders, while liquid fertilizers are fertilizer solutions and suspensions.…”

“…Solid fertilizers are granules and powders, while liquid fertilizers are fertilizer solutions and suspensions. In terms of composition, fertilizers can be divided into single-and multi-component fertilizers [9].…”

“…Solid fertilizers are granules and powders, while liquid fertilizers are fertilizer solutions and suspensions. In terms of composition, fertilizers can be divided into singleand multi-component fertilizers [9]. Potassium salts have limited solubility, which prevents the production of fertilizer solutions with a high concentration of this component.…”

“…Using the suspension form of a particular fertilizer is also ecologically beneficial, due to the possibility of utilizing waste substances from other industries in its production [20]. As a result, valuable components can be recovered from the waste stream, and the amount of waste deposited and the extraction of natural resources is reduced [9,20].…”

Valorization of Phosphorus Secondary Raw Materials by Acidithiobacillus ferrooxidans

“…The manufacturing costs of mineral fertilizers largely depend on the price of raw materials, which could be reduced if renewable by-products could be used [ 1 ]. Limited resources of natural phosphates and the unstable geopolitical situations in the regions where the largest deposits of phosphorites are located have made the recovery of phosphorus from wastes rich in fertilizers of utmost importance in recent years [ 2 ].…”