Fly ash from the combustion of coal shows potential as a source of valuable metals like the rare earth elements (REEs). These are present in the fly ash at low concentrations. Thus, simple dry pre-processing methods that can produce REE-enriched fractions from the fly ash could improve the...

Companies now face two challenges in order to remain innovative and competitive. The first is to digitally transform their production, products and services. Second is to address sustainability topics to reduce their global footprint. However, introducing new digital technologies may contradict...