scholarly journals Viability, growth, and hydrogen production of green microalgae in novel silica hydrogels

2018 ◽  
Vol 90 (9) ◽  
pp. 1162-1162
Author(s):  
S. V. Homburg ◽  
O. Kruse ◽  
A. V. Patel
Keyword(s):  
Hydrogen Production ◽  
Green Microalgae ◽  
Silica Hydrogels

The Mechanisms and Role of Photosynthetic Hydrogen Production by Green Microalgae

Microbiology ◽  
2020 ◽  
Vol 89 (3) ◽  
pp. 251-265 ◽  
Author(s):  
E. V. Petrova ◽  
G. P. Kukarskikh ◽  
T. E. Krendeleva ◽  
T. K. Antal
Keyword(s):  
Hydrogen Production ◽  
Green Microalgae

scholarly journals Comparison of hydrogen production in microalgae under autotrophic and mixotrophic media

2017 ◽  
Vol 23 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Kritsana Duangjan ◽  
Watsamon Nakkhunthod ◽  
Jeeraporn Pekkoh ◽  
Chayakorn Pumas
Keyword(s):  
Hydrogen Production ◽  
Environmentally Friendly ◽  
Biohydrogen Production ◽  
Green Microalgae ◽  
Alternative Source ◽  
Biological Hydrogen Production ◽  
Production Processes ◽  
Significant Interest ◽  
Almost All

AbstractHydrogen is an alternative source of energy of considerable interest, because it is environmentally friendly. Biological hydrogen production processes involving green microalgae are of significant interest. However, until present only few microalgae genera have been studied and almost all of those studies have focused only on cultivation using mixotrophic or heterotrophic media, which are expensive, and can be easily contaminated. This study aimed to compare the potential of biohydrogen production from novel green microalgae under autotrophic and mixotrophic media. A total of ninety strains of six orders of green microalgae were investigated for their capabilities of hydrogen production. The results showed that eleven novel hydrogen-producing microalgae genera were found. The hydrogen production in each order was influenced by the medium. Moreover, several strains presented notable levels of autotrophic hydrogen production and performed at over twice of the mixotrophic medium. These results should be supportive information for the selection and cultivation of hydrogen-producing microalgae in further studies.

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.

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