EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

One of the most important environmental problems nowadays is the recovery of industrial waste. The growing human activity generates a huge amount of material that has to be treated and stored to avoid contamination of water and lands. However, another possibility, with increasing interest in the last years, is to reuse this waste to obtain recycled new active materials which can be...

Metal oxides are currently one of the most promising families of multifunctional materials. Among them, ZnO stands out as one of the most investigated due to properties such as its wide bandgap (3.2 eV), its high excitonic energy (60 meV), its capacity as a photocatalytic material or its potential use as an antibacterial. Transition metal or rare earth doping can improve these properties. In...

Although being a major component of our debris, both in appropriate disposal sites (i.e. bins, containers, etc.) or in unappropriated ones (streets, beaches, rivers, etc.), there are very few proposals to recycle cigarette butts, so new proposals are welcome. Our research group has been recently studying the use of this residue in the development of acoustical absorbers.
In this work, some...

Since the NdFeB magnets are easily oxidated, it can lead to enhance rapidly oxygen concentration, and it can be directly related to the REE-extraction efficiency. Thus, the control of the oxygen concentration is a significant role in the process of pulverizing for recycling. In this study, the effect of hydrogen decrepitation and disproportionation are investigated in the liquid metal...