Valorisation of by-products

At ENSO, we don’t treat by-products as waste, but as strategic resources within an industrial circular economy model. We are pioneers in integrating biomass combustion systems that use complementary fuels derived from our own production processes. For example, we incorporate agricultural residues such as dried orange peel or stabilized olive pomace, which provide a consistent calorific value and significantly reduce dependence on fossil fuels. This strategy not only improves the energy efficiency of our facilities but also promotes a more balanced territorial distribution of energy sources, aligned with the principles of proximity and local valorization that drive the circular economy.

In addition, the solid by-products resulting from combustion —such as ash and slag— are not discarded but instead undergo technical valorization processes such as mineralization or chemical stabilization. In this way, we transform them into valuable raw materials for the production of mineral fertilizers or components for low-carbon cements and other construction materials. This recovery process not only prevents waste generation but also closes the material cycle, returning nutrients to the soil or permanently fixing carbon in industrial products —in line with the European waste hierarchy and the sector’s decarbonization goals.