hydrogen technology is becoming ever more relevant because hydrogen use can help containinggreenhouse gas emission if co2 capture and storage techniques are implemented in the hydrogen productiontechnology (when hydrogen is produced from fossil fuels). for this reason this work aims at carryingout a comparative analysis of possible energy scenarios in urban districts: a medium-small italian cit...

Abstract Hydrogen is considered as a game changer in decarbonization and combating global warming crisis. However, transport storage of the gas are still challenging tasks. We describe here unique enzyme from acetogenic bacteria that binds H 2 to CO , thereby producing liquid organic hydrogen carrier formic acid. A whole-cell-system enables high rates acid production well Both processes can be ...

In this research, solar-drived integrated Hydrogen production (HP) using high-temperature steam electrolysis (HTSE) is thermodynamically evaluated. This system includes an organic Rankine cycle (ORC), Rankine cycle, Brayton cycle, solar tower, and High Temperature Steam Electrolysis (HTSE). Solar energy supplies thermal energy. This heat source is applied for generating power. This energy is us...

the main objective of this study is the modelling and optimization of an industrial hydrocracker unit (hu) by means of adaptive neuro fuzzy inference system (anfis) model. in this case, some data were collected from an industrial hydrocracker plant. inputs of an anfis include flow rate of fresh feed and recycle hydrogen, temperature of reactors, mole percentage of h2 and h2s, feed flow rate and...

In this paper, a new power, heating and hydrogen cogeneration cycle from Sabalan geothermal two wells is proposed and analyzed. In the proposed system, a new double flash cycle and organic Rankine cycle are used for power production. A proton exchange membrane (PEM) is also used for hydrogen production and the domestic water heater is used for heating. The impacts of some design parameters, suc...

A self-powered dual hydrogen production system constructed by combining a Zn–H 2 battery and an overall hydrazine splitting unit with Rh single atoms supported on oxygen-functionalized Ti 3 C O x bifunctional catalyst achieves promising H generation rate of 45.77 mmol h −1 .

Our objective is to develop scaleable technology that will efficiently convert glucose and xylose, the primary products of cellulosic biomass digestion, into hydrogen. This project was designed to investigate feasibility. Key challenges were: a) demonstrating effective production of a complex hydrogenase under anaerobic conditions, and b) demonstrating the effective coupling of the hydrogenase ...