Other Renewable Energy Sources for Hydrogen Production

2012 ◽  
pp. 91-95
Author(s):  
Gabriele Zini ◽  
Paolo Tartarini
Keyword(s):  
Renewable Energy ◽  
Hydrogen Production ◽  
Renewable Energy Sources ◽  
Energy Sources

scholarly journals Main Hydrogen Production Processes: An Overview

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 547
Author(s):  
Marco Martino ◽  
Concetta Ruocco ◽  
Eugenio Meloni ◽  
Pluton Pullumbi ◽  
Vincenzo Palma
Keyword(s):  
Renewable Energy ◽  
Water Vapor ◽  
Hydrogen Production ◽  
Renewable Energy Sources ◽  
Review Article ◽  
Energy Sources ◽  
Production Methods ◽  
Carbon Neutrality ◽  
Renewable Feedstocks ◽  
Production Processes

Due to its characteristics, hydrogen is considered the energy carrier of the future. Its use as a fuel generates reduced pollution, as if burned it almost exclusively produces water vapor. Hydrogen can be produced from numerous sources, both of fossil and renewable origin, and with as many production processes, which can use renewable or non-renewable energy sources. To achieve carbon neutrality, the sources must necessarily be renewable, and the production processes themselves must use renewable energy sources. In this review article the main characteristics of the most used hydrogen production methods are summarized, mainly focusing on renewable feedstocks, furthermore a series of relevant articles published in the last year, are reviewed. The production methods are grouped according to the type of energy they use; and at the end of each section the strengths and limitations of the processes are highlighted. The conclusions compare the main characteristics of the production processes studied and contextualize their possible use.

scholarly journals Improvement of Hydrogen Production during Anaerobic Fermentation of Food Waste Leachate by Enriched Bacterial Culture Using Biochar as an Additive

2021 ◽  
Vol 9 (12) ◽  
pp. 2438
Author(s):  
Van Hong Thi Pham ◽  
Jaisoo Kim ◽  
Soonwoong Chang ◽  
Woojin Chung
Keyword(s):  
Renewable Energy ◽  
Hydrogen Production ◽  
Food Waste ◽  
Renewable Energy Sources ◽  
High Energy ◽  
Waste To Energy ◽  
Energy Sources ◽  
Hydrogen Yield ◽  
Food Waste Leachate ◽  
Waste Leachate

It has become urgent to develop cost-effective and clean technologies for the rapid and efficient treatment of food waste leachate, caused by the rapid accumulation of food waste volume. Moreover, to face the energy crisis, and to avoid dependence on non-renewable energy sources, the investigation of new sustainable and renewable energy sources from organic waste to energy conversion is an attractive option. Green energy biohydrogen production from food waste leachate, using a microbial pathway, is one of the most efficient technologies, due to its eco-friendly nature and high energy yield. Therefore, the present study aimed to evaluate the ability of an enriched bacterial mixture, isolated from forest soil, to enhance hydrogen production from food waste leachate using biochar. A lab-scale analysis was conducted at 35 °C and at different pH values (4, no adjustment, 6, 6.5, 7, and 7.5) over a period of 15 days. The sample with the enriched bacterial mixture supplemented with an optimum of 10 g/L of biochar showed the highest performance, with a maximum hydrogen yield of 1620 mL/day on day three. The total solid and volatile solid removal rates were 78.5% and 75% after 15 days, respectively. Acetic and butyrate acids were the dominant volatile fatty acids produced during the process, as favorable metabolic pathways for accelerating hydrogen production.

scholarly journals Multi-Criteria Comparative Analysis of Clean Hydrogen Production Scenarios

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4180 ◽  
Author(s):  
Bartosz Ceran
Keyword(s):  
Renewable Energy ◽  
Comparative Analysis ◽  
Hydrogen Production ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Aging Effect ◽  
Decision Criterion ◽  
Energy Sources ◽  
Pure Hydrogen ◽  
Production Technologies

Different hydrogen production scenarios need to be compared in regard to multiple, and often distinct aspects. It is well known that hydrogen production technologies based on environmentally-friendly renewable energy sources have higher values of the economic indicators than methods based on fossil fuels. Therefore, how should this decision criterion (environmental) prevail over the other types of decision criteria (technical and economic) to make a scenario where hydrogen production only uses renewable energy sources the most attractive option for a decision-maker? This article presents the results of a multi-variant comparative analysis of scenarios to annually produce one million tons of pure hydrogen (99.999%) via electrolysis in Poland. The compared variants were found to differ in terms of electricity sources feeding the electrolyzers. The research demonstrated that the scenario where hydrogen production uses energy from photovoltaics only becomes the best option for the environmental criterion weighting value at 61%. Taking the aging effect of photovoltaic installation (PV) panels and electrolyzers after 10 years of operation into account, the limit value of the environmental criterion rises to 63%. The carried out analyses may serve as the basis for the creation of systems supporting the development of clean and green hydrogen production technologies.

scholarly journals Experimental Study of Numerical Relay for Over-current Protection in Solar Panel for Securing the Hydrogen production

2018 ◽  
Vol 61 ◽  
pp. 00005
Author(s):  
Chawki Ameur menad ◽  
M. Bouchahdane ◽  
Rabah Gomri
Keyword(s):  
Renewable Energy ◽  
Hydrogen Production ◽  
Renewable Energy Sources ◽  
Experimental Tests ◽  
Work Conditions ◽  
Solar Panel ◽  
Energy Sources ◽  
Solar Panels ◽  
Electrical Faults ◽  
Numerical Relay

Every electrical system in solar panel can fail during electrical faults. In this incidence, high fault current can occur. Such current must be interrupted by a protective system. The research was supported by experimental tests. In work conditions close to real, the numerical relay REF542plus was tested for both instantaneous and extremely inverse definite minimum time IDMT over-current protection functions with the help of CMC 365 injection and test equipment associated to Test Universe software. Protecting hybrid solar panels generating by different renewable energy sources for hydrogen production from over-current is very important for improving the energy efficiency in one hand, and securing the function in critical condition from damage of the solar cells in second hand. The contribution of this research is controlling the over-current in the solar panel for securing the continuation of the hydrogen production from renewable energy sources in short time. The obtained results allowed the observation of the relay’s behavior when subjected to certain faults; where the solar panel keeps producing the hydrogen.

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