La producción, el procesamiento y el uso de combustibles, incluidos los combustibles fósiles, los biocombustibles, el hidrógeno, los combustibles sintéticos, la tecnología de combustión y el desarrollo de alternativas más limpias
5 artículosLarge-scale underground hydrogen storage in porous media (UHSP) offers a promising solution for balancing renewable energy supply and demand. However, several scientific challenges, including hydrogen's unique properties, geochemical reactions, microbial activity, and geomechanical effects, must be addressed to ensure safe and efficient storage operations.
Russian coal production increased in 2021 compared to 2020, driven by higher output in most coal basins. Exports also rose, primarily to Asian markets. The report presents detailed production, processing, shipment, and economic data for the industry.
The study explores the use of neural networks and the Group Method of Data Handling (GMDH) to predict key coking coal quality indicators (CRI and CSR) in real-time. The results suggest that these indicators can be predicted based on a combination of geological and mining parameters, with dilatation, volatile matter content, and ash content being the most influential factors.
This study identified optimal conditions (145°C and 65% sodium hydroxide solution) for producing sodium glyceroxide with an 80% yield. The resulting catalyst was tested in palm olein transesterification, showing higher activity than a comparable potassium glyceroxide catalyst.
The study identifies operational improvements, resource management, and technological advancements as key drivers of competitiveness in the coal industry, emphasizing a shift from traditional cost reduction strategies. It also highlights the importance of human capital, market resources, and environmental concerns in achieving a competitive edge, particularly in the context of Russia and Indonesia's coal industries.