Bulgaria
A Manganese Hydride Molecular Sieve for Practical Hydrogen Storage Under Ambient Conditions
Dec 2018
Publication
A viable hydrogen economy has thus far been hampered by the lack of an inexpensive and convenient hydrogen storage solution meeting all requirements especially in the areas of long hauls and delivery infrastructure. Current approaches require high pressure and/or complex heat management systems to achieve acceptable storage densities. Herein we present a manganese hydride molecular sieve that can be readily synthesized from inexpensive Read More
Perspectives on the Development of Technologies for Hydrogen as a Carrier of Sustainable Energy
Aug 2023
Publication
Hydrogen is a prospective energy carrier because there are practically no gaseous emissions of greenhouse gases in the atmosphere during its use as a fuel. The great benefit of hydrogen being a practically inexhaustible carbon-free fuel makes it an attractive alternative to fossil fuels. I.e. there is a circular process of energy recovery and use. Another big advantage of hydrogen as a fuel is its high energy content per unit mass compared to fossil fuels. Nowad Read More
Prospects of Hydrogen Application as a Fuel for Large-Scale Compressed-Air Energy Storages
Jan 2024
Publication
A promising method of energy storage is the combination of hydrogen and compressed-air energy storage (CAES) systems. CAES systems are divided into diabatic adiabatic and isothermal cycles. In the diabatic cycle thermal energy after air compression is discharged into the environment and the scheme implies the use of organic fuel. Taking into account the prospects of the decarbonization of the energy industry it is advisable to replace natural ga Read More
Assessment of Energy Footprint of Pure Hydrogen-Supplied Vehicles in Real Conditions of Long-Term Operation
Jul 2024
Publication
The desire to maintain CO2 concentrations in the global atmosphere implies the need to introduce ’new’ energy carriers for transport applications. Therefore the operational consumption of each such potential medium in the ’natural’ exploitation of vehicles must be assessed. A useful assessment method may be the vehicle’s energy footprint resulting from the theory of cumulative fuel consumption presented in the article. Using a (very modest) database o Read More
Two-Stage Anaerobic Digestion for Green Energy Production: A Review
Jan 2025
Publication
Anaerobic digestion (AD) is a biotechnological process in which the microorganisms degrade complex organic matter to simpler components under anaerobic conditions to produce biogas and fertilizer. This process has many environmental benefits such as green energy production organic waste treatment environmental protection and greenhouse gas emissions reduction. It has long been known that the two main species (acidogenic bacteria and m Read More
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