BACKGROUND Energy shortage and environmental pollution are two severe global problems, and biological hydrogen production from lignocellulose shows great potential as a promising alternative biofuel to replace the fossil fuels. Currently, most studies on hydrogen production from lignocellulose concentrate on cellulolytic microbe, pretreatment method, process optimization and development of new ...

The energy transition with transformation into predominantly renewable sources requires technology development to secure power production at all times, despite the intermittent nature of renewables. Micro gas turbines (MGTs) are small heat and generation units fast startup load-following capability thereby suitable backup for future’s decentralized systems. Due MGTs’ fuel flexibility, a range f...

Transitioning to energy-saving and renewable energy sources is impossible without accelerated development of hydrogen technologies. This review summarizes the state-of-the-art recent advances various production processes, including but not limited thermochemical electrolytic processes. Their opportunities limitations, operating conditions, catalysts are discussed. Nowadays, most still produced ...

Low-cost alkaline water electrolysis has been considered a sustainable approach to producing hydrogen using renewable energy inputs, but preventing hydrogen/oxygen mixing and efficiently using the instable renewable energy are challenging. Here, using nickel hydroxide as a redox mediator, we decouple the hydrogen and oxygen production in alkaline water electrolysis, which overcomes the gas-mixi...

Elcogen is a company providing solid oxide cell and stack solutions for fuel (SOFC) electrolysis (SOEC) applications. Elcogen's are designed to operate at reduced operating temperatures but still high performance affordable cost low degradation level. currently expanding its manufacturing capabilities towards multi-MW annual production levels through factory project. As part of commercializatio...

A major route for hydrogen production by purple photosynthetic bacteria is biological nitrogen fixation. Nitrogenases reduce atmospheric nitrogen to ammonia with the concomitant obligate production of molecular hydrogen. However, hydrogen production in the context of nitrogen fixation is a rather inefficient process because about 75% of the reductant consumed by the nitrogenase is used to gener...

Multifariousness of biofuel sources has marked an edge to an imperative energy issue. Production of hydrogen from microalgae has been gathering much contemplation right away. But, mercantile production of microalgae biofuels considering bio-hydrogen is still not practicable because of low biomass concentration and costly down streaming processes. This review has taken up the hydrogen production...

Coal gasification is recognized as the core technology of clean coal utilization that exhibits significant advantages in hydrogen-rich syngas production and CO2 emission reduction. This review briefly discusses recent research progress on various techniques, including conventional (fixed bed, fluidized entrained bed gasification) relatively new (supercritical water gasification, plasma chemical...

This paper presents an overview of the principles of hydrogen energy production, storage, and util ization. Hydrogen production wil l cover a whole array of methods including electrolysis, thermolysis, photolysis, thermochemical cycles, and production from biomass. H ydrogen storage will cover al l modes of gaseous, liquid, slush, and metal hydride storage. Hydrogen uti l ization will focus on ...