The primary objective of the circular economy is to maintain the value of products, materials and resources, thus minimizing waste. In this way, the sustainability and performance of production processes can grow, facilitating the development of new products and technologies, especially for the benefit of future generations.

The need for a sustainable development model, therefore, implies the need for virtuous routes to exploit all resources, in particular by-products, which can be a great opportunity for the development of new industrial sectors.