Rhodium nanoparticles impregnated on TiO2: strong morphological effects on hydrogen production

2020 ◽  
Vol 44 (31) ◽  
pp. 13249-13258
Author(s):  
Brunno L. Albuquerque ◽  
Gustavo Chacón ◽  
Michael Nazarkovsky ◽  
Jairton Dupont
Keyword(s):  
Hydrogen Production ◽  
Rhodium Nanoparticles ◽  
Methanolic Solution ◽  
Exposed Facet

Rhodium nanoparticles with different morphology were synthesized to assess the influence of the exposed facet towards hydrogen production in aqueous methanolic solution.

Utilization of electrical charges in the pores of tofu waste for hydrogen production in water

2020 ◽  
pp. 124-135
Author(s):  
I. N. G. Wardana ◽  
N. Willy Satrio
Keyword(s):  
Magnetic Field ◽  
Hydrogen Production ◽  
Sodium Bicarbonate ◽  
Positive Charge ◽  
Electrical Energy ◽  
Hydrogen Sensor ◽  
Water Molecules ◽  
Partial Charge ◽  
Delocalized Electron ◽  
Water Hydrogen

Tofu is main food in Indonesia and its waste generally pollutes the waters. This study aims to change the waste into energy by utilizing the electric charge in the pores of tofu waste to produce hydrogen in water. The tofu pore is negatively charged and the surface surrounding the pore has a positive charge. The positive and negative electric charges stretch water molecules that have a partial charge. With the addition of a 12V electrical energy during electrolysis, water breaks down into hydrogen. The test was conducted on pre-treated tofu waste suspension using oxalic acid. The hydrogen concentration was measured by a MQ-8 hydrogen sensor. The result shows that the addition of turmeric together with sodium bicarbonate to tofu waste in water, hydrogen production increased more than four times. This is due to the fact that magnetic field generated by delocalized electron in aromatic ring in turmeric energizes all electrons in the pores of tofu waste, in the sodium bicarbonate, and in water that boosts hydrogen production. At the same time the stronger partial charge in natrium bicarbonate shields the hydrogen proton from strong attraction of tofu pores. These two combined effect are very powerful for larger hydrogen production in water by tofu waste.

Pure Hydrogen Production from Steam Reforming of Bio-Sources

2015 ◽  
Vol 2 (2) ◽  
pp. 48-56 ◽  
Author(s):  
A. Iulianelli ◽  
◽  
G. Bagnato ◽  
A. Iulianelli ◽  
A. Vita Vita ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Pure Hydrogen

Peculiarities of Hydrogen Production Technology Using Energy Storage Materials

2016 ◽  
Vol 12 (4) ◽  
pp. 5-10
Author(s):  
L.F. Kozin ◽  
◽  
S.V. Volkov ◽  
A.V. Sviatogor ◽  
B.I. Daniltsev ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hydrogen Production ◽  
Production Technology ◽  
Energy Storage Materials ◽  
Storage Materials

HYDROGEN FROM HYDROGEN SULPHIDE IN BLACK SEA

2019 ◽  
pp. 49-55
Author(s):  
S. Z. Baykara ◽  
E. H. Figen ◽  
A. Kale ◽  
T. N. Veziroglu
Keyword(s):  
Hydrogen Production ◽  
Black Sea ◽  
Hydrogen Sulphide ◽  
Sea Water ◽  
Economic Value ◽  
Environmental Pollutant ◽  
The Black Sea ◽  
Fuel Processing ◽  
Acid Gas ◽  
Reducing Bacteria

Hydrogen sulphide, an acid gas, is generally considered an environmental pollutant. As an industrial byproduct, it is produced mostly during fuel processing. Hydrogen sulphide occurs naturally in many gas wells and also in gas hydrates and gas-saturated sediments especially at the bottom of the Black Sea where 90% of the sea water is anaerobic.The anoxic conditions exist in the deepest parts of the basin since nearly 7300 years, caused by the density stratification following the significant influx of the Mediterranean water through the Bosphorous nearly 9000 years ago. Here, H2S is believed to be produced by sulphur reducing bacteria at an approximate rate of 10 000 tons per day, and it poses a serious threat since it keeps reducing the life in the Black Sea. An oxygen–hydrogen sulphide interface is established at 150–200 m below the surface after which H2S concentration starts increasing regularly until 1000 m, and finally reaches a nearly constant value of 9.5 mg/l around 1500 m depth.Hydrogen sulphide potentially has economic value if both sulphur and hydrogen can be recovered. Several methods are studied for H2S decomposition, including thermal, thermochemical, electrochemical, photochemical and plasmochemical methods.In the present work, H2S potential in the Black Sea is investigated as a source of hydrogen, an evaluation of the developing prominent techniques for hydrogen production from H2S is made, and an engineering assessment is carried out regarding hydrogen production from H2S in the Black Sea using a process design based on the catalytic solar thermolysis approach. Possibility of a modular plant is considered for production at larger scale.

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