Environmental performances of diluents and hydrogen production pathways from microalgae in cold climates: Open raceway ponds and photobioreactors coupled with thermochemical conversion

2020 ◽  
Vol 47 ◽  
pp. 101815 ◽  
Author(s):  
Stan Pankratz ◽  
Mayank Kumar ◽  
Adetoyese Olajire Oyedun ◽  
Eskinder Gemechu ◽  
Amit Kumar
2021 ◽  
Vol 36 (1) ◽  
pp. 42-52
Author(s):  
F. N Osuolale ◽  
K. A. Babatunde ◽  
O.O Agbede ◽  
A. F Olawuni ◽  
A.J Fatukasi ◽  
...  

Hydrogen has the potential to be a clean and sustainable alternative to fossil fuel especially if it is produced from renewable sources such as biomass. Gasification is the thermochemical conversion of biomass to a mixture of gases including hydrogen. The percentage yield of each constituent of the mixture is a function of some factors. This article highlights various parameters such as operating conditions; gasifier type; biomass type and composition; and gasification agents that influence the yield of hydrogen in the product gas. Economic evaluation of hydrogen from different sources was also presented. The hydrogen production from gasification process appears to be the most economic process amongst other hydrogen production processes considered. The process has the potential to be developed as an alternative to the conventional hydrogen production process.


Energy ◽  
2021 ◽  
Vol 217 ◽  
pp. 119384
Author(s):  
Gabriel Garcia ◽  
Emmanuel Arriola ◽  
Wei-Hsin Chen ◽  
Mark Daniel De Luna

2019 ◽  
Vol 3 (2) ◽  
pp. 314-342 ◽  
Author(s):  
Binlin Dou ◽  
Hua Zhang ◽  
Yongchen Song ◽  
Longfei Zhao ◽  
Bo Jiang ◽  
...  

Hydrogen production from thermochemical conversion has been considered the most promising technology for the use of biomass, and some novel methods are also being developed for low cost and high efficiency.


Author(s):  
Gopalakrishnan Kumar ◽  
A. Parvathy Eswari ◽  
S. Kavitha ◽  
M. Dinesh Kumar ◽  
R. Yukesh Kannah ◽  
...  

2020 ◽  
pp. 124-135
Author(s):  
I. N. G. Wardana ◽  
N. Willy Satrio

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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