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One of the important environmental protection problems in Romania is air pollution, which is an extremely complex phenomenon. Industrialized urban settlements are susceptible to the phenomenon of pollution given the presence of various types of polluting species. The area of interest, where the study was carried out (Jiu Valley), is a mountainous region located in the southwestern part of Romania, known for its mineral resources and for the mining industry that dominated the region for several decades. Currently, ...

On the way to a climate-neutral Europe and a cleaner planet in general, it is important to rethink energy supply and build a fully integrated energy system within the framework of the European Green Deal. According to research, renewable energies could provide a substantial part of the European energy mix until 2050. In this mix, hydrogen could represent up to 20%, respectively between 20-50% of energy needed in transport and between 5-20% of energy needed in industry. An economy based on renewable hydrogen can si...