Electrolytes behavior during hydrogen production by solar energy

Sellami, M.H.; Loudiyi, Khalid

doi:10.1016/j.rser.2016.12.034

Cited by 61 publications

(22 citation statements)

References 13 publications

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“…122 In AWE-based hydrogen production technique, two electrodes (made from nonnoble materials) separated by a diaphragm are immersed in a liquid alkaline electrolyte (KOH or NaOH). 123 The diaphragm is permeable to the water molecules and hydroxide ions (OH − ) between the two electrodes to separate the product gases. 124 AWE is commercialized and widely used as electrolyzer, and the electrolyte can be recovered and reused.…”

Section: Alkaline Water Electrolysismentioning

confidence: 99%

Hydrogen from solar energy, a clean energy carrier from a sustainable source of energy

2020

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Summary Solar energy is going to play a crucial role in the future energy scenario of the world that conducts interests to solar‐to‐hydrogen as a means of achieving a clean energy carrier. Hydrogen is a sustainable energy carrier, capable of substituting fossil fuels and decreasing carbon dioxide (CO2) emission to save the world from global warming. Hydrogen production from ubiquitous sustainable solar energy and an abundantly available water is an environmentally friendly solution for globally increasing energy demands and ensures long‐term energy security. Among various solar hydrogen production routes, this study concentrates on solar thermolysis, solar thermal hydrogen via electrolysis, thermochemical water splitting, fossil fuels decarbonization, and photovoltaic‐based hydrogen production with special focus on the concentrated photovoltaic (CPV) system. Energy management and thermodynamic analysis of CPV‐based hydrogen production as the near‐term sustainable option are developed. The capability of three electrolysis systems including alkaline water electrolysis (AWE), polymer electrolyte membrane electrolysis, and solid oxide electrolysis for coupling to solar systems for H2 production is discussed. Since the cost of solar hydrogen has a very large range because of the various employed technologies, the challenges, pros and cons of the different methods, and the commercialization processes are also noticed. Among three electrolysis technologies considered for postulated solar hydrogen economy, AWE is found the most mature to integrate with the CPV system. Although substantial progresses have been made in solar hydrogen production technologies, the review indicates that these systems require further maturation to emulate the produced grid‐based hydrogen.

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Section: Alkaline Water Electrolysismentioning

confidence: 99%

Hydrogen from solar energy, a clean energy carrier from a sustainable source of energy

2020

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“…VM is the molar volume of ideal gas under standard conditions (298.15 K and 1 atm) and F is Faraday's number (96 485 C/mol). Hydrogen gas volume in STP conditions (298.15 K and 1 atm) is 24.47 l / mol [13]. Table 1 shows current data on batteries for single solar panels that were taken at 2 locations in Semarang, namely Marina and Tembalang.…”

Section: Hydrogen Ideal Volumementioning

confidence: 99%

“…The hydrogen gas volume which is calculation based on potential solar intensity at each location for a single panel as shown in table 2. That is result from redox equation for STP conditions (298.15 K and 1 atm) [13] and assumed on steady-state process. In table 2, the magnitude of the solar intensity is proportional to flowrate (mol/h) and volume of hydrogen production (ml).…”

Section: Hydrogen Ideal Volumementioning

confidence: 99%

“…It can be concluded that the ideal hydrogen volume equation can be used to calculate the predicted volume of hydrogen that will be produced in a water electrolysis process. The results of the hydrogen volume during the experiment cannot be maximized due to several factors such as the concentration of electrolyte solution [13]. temperature [12], solar radiation, voltage stability and electrode composition.…”

Section: Fig 12 Curve Of Flow Rate Hydrogen and Hydrogen Volumementioning

confidence: 99%

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Potential of Hydrogen Production Through Alkaline Water Electrolysis Using Solar Radiation Around Semarang

2019

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Indonesian society’s dependence on fossil fuel and the minimum GHG emission reduction target of 11% for the energy sector, encourages the development of hydrogen as an eco-friendly renewable energy resource for transportation and industries sector. Electrolysis is one of technology for hydrogen production. Electrolysis technology that utilizes the sun as a generating source is a eco-friendly technology of hydrogen production. The solar intensity in Semarang is 5.49 kWh/m2/day so that is potensial to used for hydrogen production. Solar intensity measurements were carried out in 2 locations in Semarang that have different altitude using single and parallel monocrystalline solar modules with observation from 8am-4pm. The measurement results are used as data for calculated the flow rate and the volume of hydrogen that can be produced. The highest hydrogen volume can be produced in Marina for single and parallel panel are 2,099.93 ml/h and 4,199.86 ml/h that are both at 10am. The highest hydrogen volume can be produced in Tembalang for single and parallel panel are 2,693.39 ml/h at 1pm and 5,751.98 ml/h at 11am. The altitude level of location greatly influences the solar intensity for hydrogen production. Parallel panel can produce hydrogen approximately 2 times single panel.

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“…The issues that hinder the wide-scale application of hydrogen as a fuel are related to high costs of its production, and the technical problems associated with its storage and distribution. Commercially, it is produced in a steam reforming process from natural gas and oil and, to a lesser extent, through gasification of coal and water electrolysis [Balat 2008, Hassen Sellami and Loudiyi 2017]. However, as mentioned above, these processes are very energy-consuming and, moreover, they require fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

Current State, Challenges and Perspectives of Biological Production of Hydrogen in Dark Fermentation Process in Poland

Kozłowski¹,

Lewicki²,

Malińska³

et al. 2019

J. Ecol. Eng.

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The increasing demand for electrical energy and environmental concerns associated with conventional means of its generation drive the interest in alternative fuels. Biohydrogen, widely considered as fuel of the future, is one of such alternatives. To date, research results suggest that biological routes are the most promising for hydrogen production, especially dark (hydrogen) fermentation. Hydrogen fermentation can be performed with agricultural and food processing wastes as substrates. In this paper the most important factors influencing dark fermentation are reviewed and analyzed. These are: pH, partial pressure, temperature, and retention time. The biohydrogen generation efficiency is also presented with respect to different substrates. It should be also pointed out that many factors are still unknown; thus, the process requires conducting further research.

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Electrolytes behavior during hydrogen production by solar energy

Cited by 61 publications

References 13 publications

Hydrogen from solar energy, a clean energy carrier from a sustainable source of energy

Hydrogen from solar energy, a clean energy carrier from a sustainable source of energy

Potential of Hydrogen Production Through Alkaline Water Electrolysis Using Solar Radiation Around Semarang

Current State, Challenges and Perspectives of Biological Production of Hydrogen in Dark Fermentation Process in Poland

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