Experimental Investigation of the Operating Parameters Affecting Hydrogen Production Process through Alkaline Water Electrolysis

Mahrous, A-F.M.; Sakr, I.M.; Balabel, Ashraf; Ibrahim, Khaled Z.

doi:10.5383/ijtee.02.02.009

Cited by 24 publications

(14 citation statements)

References 9 publications

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“…Higher rates of produced hydrogen can be gained at smaller space between the electrodes and also at higher voltage input. Higher efficiency of system was also obtained at smaller gap distances between the pair of electrodes [44]. Less resistive current path is known to be a result of using electrodes with larger surface areas.…”

Section: Effect Of Electrical Conductivitymentioning

confidence: 71%

“…This is attributed to the fact that ionic radius of sodium is small than potassium [43] The advantage of indirect electrolysis of seawater is to be able to use the readily developed technology of fresh water electrolysis, and hence, no chlorine produced at the anode of the cell during the electrolysis process [41]. Mahrous and et al in 2011 observed that the rate of hydrogen production was increased by increasing in concentration of KOH in solution. This is due to the increase in the electrical conductivity.…”

Section: Effect Of Electrolyte Concentrationmentioning

confidence: 98%

“…This is due to the increase in the electrical conductivity. Increasing in the ionic conductivity causes an increase in the electrical current passing through the solution and, as a result, to an increase in hydrogen production for all tested models [44]. Jabar and Ibrahim explained that the rate of hydrogen produced using NaHCO 3 was higher than NaOH.…”

Section: Effect Of Electrolyte Concentrationmentioning

confidence: 99%

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An Overview of Hydrogen Production Technologies of Water Electrolysis

2017

IJSR

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Abstract:This review provides an overview of some important investigations performed on the development of hydrogen production. In the near future, hydrogen will become an important source which may be able to solve local problems also connected with air quality. Hydrogen-propelled transport is being established and is utilized in the industry. Hydrogen is abundantly present all over universe and can be obtained from different resources, renewable or not. Sources of hydrogen energy are coal and biomass, oil, natural gas, algae and alcohols, water electrolysis, PV-electrolysis, wind-electrolysis and geothermal energy electrolysis. In particular, hydrogen can be generated from water electrolysis using all those processes that can give the required 1.23 V potential. Electrolysis reveals itself as the cleanest method to generate hydrogen, when the required electricity is derived from renewable energy sources. This work provides also basic information, particularly about the main research lines and some factors affecting hydrogen production in electrolysis process.

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Section: Effect Of Electrical Conductivitymentioning

confidence: 71%

Section: Effect Of Electrolyte Concentrationmentioning

confidence: 98%

Section: Effect Of Electrolyte Concentrationmentioning

confidence: 99%

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An Overview of Hydrogen Production Technologies of Water Electrolysis

2017

IJSR

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“…In addition, Balabel et al [12] investigated the electrolyzer efficiency at various operational parameters, by experimental and numerical studies. The experimental results of Mahrous et al [13] showed that the performance of water electrolyzer unit is highly affected by input voltage and the gap between the electrodes. Also, the effect of the separator material, separation distance and solution concentration on energy efficiency of alkaline water electrolyzer, were investigated by Sakr et al [14].…”

Section: Introductionmentioning

confidence: 99%

Performance of Hydrogen Production Process Using Solar Energy

Sakr

Abdelsalam

El‐Askary

2018

The International Conference on Applied Mechanics and Mechanica

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The present experimental work is devoted to explore the efficiency of alkaline water electrolysis in producing hydrogen when it is operated by solar energy. The overall system efficiency is determined by measuring the solar irradiance as the source of the input energy, and the amount of hydrogen produced as the source of the output energy. Hence, the losses through the Photo-Voltaic (PV) cell, connecting wires, and the water electrolyzer, are all considered in the present study. Moreover, the effects of the gab width distance and the separators' types, on the overall system efficiency are also presented. It is found that, the higher the electrolyzer efficiency, the higher is the overall system efficiency at almost conditions. The significant reduction in system efficiency may be due to losses of the energy conversion through the PV cell and the electrical losses in the connecting wires. Though, the electrolyzer efficiency reaches 90% and the maximum overall system efficiency of 1.7% is barely achieved.

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“…The abundant of hydrogen making it to be a renewable fuel. Hydrogen also is efficient to be used as an alternative fuel since it is safe, clean, light, and affordable to be produced [3][4][5][6]. Hydrogen has proven to be a resources that contains higher energy that the fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Voltage Flow and pH Value in Alkaline Electrolyser System to Performance

Rosley

Tamaldin

Abdollah

et al. 2015

AMM

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Abstract. The aim of this paper is to investigate the effects of voltage flow (V) in the alkaline electrolyser system and the pH value (pH) of the electrolyte used in the electrolyser. The output measurement of both investigated factors in in the flow rate of the hydrogen gas produced by the system per minute (ml/min). The voltage flow was altered in the system by altering the voltage supply from the workbench power supply ranging from 11V to 14V. The pH value of the electrolyte solution in the electrolyser was altered by the addition of Potassium Hydroxide (KOH) in the distilled water. The pH value samples of the tested solution ranging from 13.0 to 14.0 pH value due to the limitation of the electrolyser used in this experiment. The results found that, the hydrogen gas produced per minute increases with voltage flow in the system. The flow rate of the hydrogen gas produced however only increases when the solution's pH value reaches at 14 pH level and unreactive below the value.

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Experimental Investigation of the Operating Parameters Affecting Hydrogen Production Process through Alkaline Water Electrolysis

Cited by 24 publications

References 9 publications

An Overview of Hydrogen Production Technologies of Water Electrolysis

An Overview of Hydrogen Production Technologies of Water Electrolysis

Performance of Hydrogen Production Process Using Solar Energy

The Effects of Voltage Flow and pH Value in Alkaline Electrolyser System to Performance

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