scholarly journals Hydrogen as a Clean Energy Source

2021 ◽  
Author(s):  
Vikram Rama Uttam Pandit
Keyword(s):  
Energy Source ◽  
Hydrogen Production ◽  
Large Scale ◽  
Fossil Fuels ◽  
Hydrogen Generation ◽  
Clean Energy ◽  
Green Energy ◽  
Main Challenge ◽  
Clean Energy Source ◽  
Energy Challenge

Sustainable development of the world is mainly dependent on the use of present energy resources, which primarily includes water, wind, solar, geothermal, and nuclear power. Hydrogen as a clean and green energy source can be the resolution of the energy challenge and may satisfy the demands of several upcoming generations. Hydrogen when used it does not produce any type of pollutant and this makes it a best candidate as a clean energy. Hydrogen energy can be generated from natural gas, oil, biomass, and fossil fuels using thermochemical, photocatalytic, microbiological and electrolysis processes. Large scale hydrogen production is also testified up to some extent with proper engineering for multi applications. Alas, storage and transportation of hydrogen are the main challenge amongst scientific community. Photocatalytic hydrogen production with good efficiencies and amount is well discussed. Till date, using a variety of metal oxide-sulfide, carbon-based materials, metal organic frameworks are utilized by doping or with their composites for enhance the hydrogen production. Main intents of this chapter are to introduce all the possible areas of hydrogen applications and main difficulties of hydrogen transportation, storage and achievements in the hydrogen generation with its applications.

scholarly journals Different forms of hydrogen production: a review and future perspectives

2022 ◽  
Vol 8 (2) ◽  
pp. 49-58
Author(s):  
Grazielle Cristina de Araujo ◽  
Jair Antonio Cruz Siqueira ◽  
Loreci Zanardini ◽  
João Felipe Peixoto Marques ◽  
Rafaela Lazzarin ◽  
...  
Keyword(s):  
Energy Source ◽  
Hydrogen Production ◽  
Literature Review ◽  
Greenhouse Gases ◽  
Fossil Fuels ◽  
Clean Energy ◽  
Biohydrogen Production ◽  
Research Centers ◽  
Future Perspectives ◽  
Clean Energy Source

There was a significant increase in the concern with climate issues, among them highlighted as the derivation of greenhouse gases from the burning fossil fuels, leading several research centers and researchers to seek new sources of less polluting energy, independent of the burn-based matrix of fuels. In this context, the present work has as main presenter a literature review, perspective and comparisons regarding the use of hydrogen as a clean energy source, presenting three main ways of obtaining it: a) through electrolysis using renewable sources; b) biohydrogen production, based on the photosynthesis of plants and algae; c) production through biodigesters.

scholarly journals Ocean Energy - A Clean Energy Source

2019 ◽  
Vol 4 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Phuoc Quy Phong Nguyen ◽  
Van Huong Dong
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Fossil Fuels ◽  
World Ocean ◽  
Clean Energy ◽  
Ocean Energy ◽  
Energy Technologies ◽  
The World ◽  
The Status ◽  
Clean Energy Source

The world is constantly seeking new sources of energy to replace the use of coal and fossil fuels to generate electricity. And a strong source of energy from the ocean is one of the hopes of scientists around the world. Ocean energy is an endless renewable energy source for making electricity used for the world. Marine technology was once considered too expensive to be a viable source of alternative clean energy, especially compared to already developed products such as wind and solar. However, with the increased price of oil and the issues of global warming and national security, U.S. coastal sites are looking to add ocean energy to their renewable energy portfolios. This paper gives an overview of ocean energy technologies, focusing on two different types: wave, tidal. It outlines the operating principles, the status, and the efficiency and cost of generating energy associated with each technology.

Enhanced hydrogen production under a visible light source and dye degradation under natural sunlight using nanostructured doped zinc orthotitanates

2015 ◽  
Vol 39 (5) ◽  
pp. 3821-3834 ◽  
Author(s):  
Latesh Nikam ◽  
Rajendra Panmand ◽  
Sunil Kadam ◽  
Sonali Naik ◽  
Bharat Kale
Keyword(s):  
Energy Source ◽  
Hydrogen Production ◽  
Visible Light ◽  
Light Source ◽  
Dye Degradation ◽  
Clean Energy ◽  
Solar Light ◽  
Natural Sunlight ◽  
Clean Energy Source ◽  
Waste Degradation

Nanostructured zinc orthotitanates were successfully employed as solar light driven photocatalysts for waste degradation such as H2S which produces H2, a clean energy source, and dye degradation.

scholarly journals How to Use Hydrogen in a New Strategy to Mitigate Urban Air Pollution and Preserve Human Health

2020 ◽  
Vol 15 (7) ◽  
pp. 1007-1015
Author(s):  
Louiza Haddad ◽  
Zeroual Aouachria ◽  
Djamel Haddad
Keyword(s):  
Energy Source ◽  
Air Pollution ◽  
Human Health ◽  
Fossil Fuels ◽  
Urban Air Pollution ◽  
Clean Energy ◽  
Transport Systems ◽  
Traffic Density ◽  
Urban Air ◽  
Clean Energy Source

If transport is an essential means for the development of the economy, society and its mobility, it has the drawback of leading to significant atmospheric pollution. As traffic density is very high in large cities, air pollution is amplified by the various means of transport resulting from the combustion of fossil fuels. Urban air pollution is mainly caused by vehicles generating emissions harmful to human health. Our objective of this work is to analyze a strategy to eliminate or reduce the emission of these pollutants (NOx, CO, CO2) during combustion. This strategy aims to explore a clean energy source alternative to fossil fuels. This approach consists of completely replacing the internal combustion scalar with the engine powered by fuel cells using hydrogen. This motivates decision makers to choose hydrogen as an alternative fuel to protect the urban environment and the health human from air pollution. This study shows that it is possible to perfectly mitigate pollutants from urban transport systems by using a PEMFC as an alternative clean energy source. Analyze a strategy to eliminate or reduce the emissions of these pollutants (NOx, CO, CO2) during the combustion of full fossil fuel in vehicle engines. This strategy aims to exploit the energy vector represented by hydrogen in order to save human life in more populated areas and protect the environment. The pressure, temperature and concentration of each species (O2, H2 and H2O) are obtained from the resolution of the electrochemical model coupled to the dynamic model, which we do not present here.

scholarly journals Maximizing Hydrogen Production by Cyanobacteria

2008 ◽  
Vol 63 (3-4) ◽  
pp. 226-232 ◽  
Author(s):  
Hermann Bothe ◽  
Stefanie Winkelmann ◽  
Gudrun Boison
Keyword(s):  
Energy Source ◽  
Hydrogen Production ◽  
Solar Energy ◽  
Energy Conversion ◽  
Molecular Hydrogen ◽  
Solar Energy Conversion ◽  
Clean Energy ◽  
Anabaena Variabilis ◽  
High Concentrations ◽  
Clean Energy Source

When incubated anaerobically, in the light, in the presence of C2H2 and high concentrations of H2, both Mo-grown Anabaena variabilis and either Mo- or V-grown Anabaena azotica produce large amounts of H2 in addition to the H2 initially added. In contrast, C2H2- reduction is diminished under these conditions. The additional H2-production mainly originates from nitrogenase with the V-enzyme being more effective than the Mo-protein. This enhanced H2-production in the presence of added H2 and C2H2 should be of interest in approaches to commercially exploit solar energy conversion by cyanobacterial photosynthesis for the generation of molecular hydrogen as a clean energy source

scholarly journals Hydrogen Production via Hydrolysis and Alcoholysis of Light Metal-Based Materials: A Review

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Liuzhang Ouyang ◽  
Jun Jiang ◽  
Kang Chen ◽  
Min Zhu ◽  
Zongwen Liu
Keyword(s):  
Hydrogen Production ◽  
Large Scale ◽  
Fossil Fuels ◽  
Hydrogen Generation ◽  
Low Cost ◽  
Light Metal ◽  
Hydrogen Yield ◽  
Hydrogen Economy ◽  
The One ◽  
And Storage

AbstractAs an environmentally friendly and high-density energy carrier, hydrogen has been recognized as one of the ideal alternatives for fossil fuels. One of the major challenges faced by “hydrogen economy” is the development of efficient, low-cost, safe and selective hydrogen generation from chemical storage materials. In this review, we summarize the recent advances in hydrogen production via hydrolysis and alcoholysis of light-metal-based materials, such as borohydrides, Mg-based and Al-based materials, and the highly efficient regeneration of borohydrides. Unfortunately, most of these hydrolysable materials are still plagued by sluggish kinetics and low hydrogen yield. While a number of strategies including catalysis, alloying, solution modification, and ball milling have been developed to overcome these drawbacks, the high costs required for the “one-pass” utilization of hydrolysis/alcoholysis systems have ultimately made these techniques almost impossible for practical large-scale applications. Therefore, it is imperative to develop low-cost material systems based on abundant resources and effective recycling technologies of spent fuels for efficient transport, production and storage of hydrogen in a fuel cell-based hydrogen economy.

Techno-Economic Assessment of Utilizing Wind Energy for Hydrogen Production Through Electrolysis

2017 ◽  
Author(s):  
Reza Ziazi ◽  
Kasra Mohammadi ◽  
Navid Goudarzi
Keyword(s):  
Hydrogen Production ◽  
Wind Energy ◽  
Wind Turbines ◽  
Alternative Energy ◽  
Large Scale ◽  
Fossil Fuels ◽  
Combustion Engine ◽  
Economic Assessment ◽  
Large Cities ◽  
North East

Hydrogen as a clean alternative energy carrier for the future is required to be produced through environmentally friendly approaches. Use of renewables such as wind energy for hydrogen production is an appealing way to securely sustain the worldwide trade energy systems. In this approach, wind turbines provide the electricity required for the electrolysis process to split the water into hydrogen and oxygen. The generated hydrogen can then be stored and utilized later for electricity generation via either a fuel cell or an internal combustion engine that turn a generator. In this study, techno-economic evaluation of hydrogen production by electrolysis using wind power investigated in a windy location, named Binaloud, located in north-east of Iran. Development of different large scale wind turbines with different rated capacity is evaluated in all selected locations. Moreover, different capacities of electrolytic for large scale hydrogen production is evaluated. Hydrogen production through wind energy can reduce the usage of unsustainable, financially unstable, and polluting fossil fuels that are becoming a major issue in large cities of Iran.

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