چکیده:
According to the environmental impacts and fossil fuel resources being depleted in the future, the tendency to use of renewable energy sources has increased. This kind of energy is collected from various resources such as wind, sunlight, rain, waves, and geothermal heat. Among different renewable energies, hydrogen is one of the best fossil fuel alternatives. Hydrogen is produced using several sources such as fossil fuels and biomass. Biological hydrogen production (BHP) is a good process compared to others. These processes are at an early stage of research, but in the long term have the potential for sustainable, low-carbon hydrogen production. It should be noted, that these technologies have disadvantages such as low efficiency and hydrogen production rate. In this paper, hydrogen production from glucose fermentation is investigated. The simulation results show that separation of produced hydrogen provides a significant energy source for mentioned biological pathway.
خلاصه ماشینی:
Hydrogen Production during Glucose Fermentation Process Mehrdad Najafi1*, Mohammad GHanbari2 1- Department of Chemical Engineering, Sharif University of Technology, Azadi Ave, Tehran, Iran 2- Department of Energy Engineering, Sharif University of Technology, Azadi Ave, Tehran, Iran *najafi.
The simulation results show that separation of produced hydrogen provides a significant energy source for mentioned biological pathway.
One these technologies is biological hydrogen production processes which can be divided into two basic concepts: photo fermentation and dark fermentation [7-9].
The main purpose of this paper is to investigate the feasibility of hydrogen production from glucose fermentation process.
(به تصوير صفحه مراجعه شود)Fig 1-Primary energy distribution through the sources for the production of hydrogen [20] Most of the hydrogen is produced by steam reforming of Natural gas (which is mainly methane) and other fossil fuels as following: 3 + 2 ↔ (+ 2 ) 2 + ∆>0 (1) This process happened in high thermal efficiency (>80%) and higher relative amount of 2 relative to in the produced gas ( 2 / = 3).
Dark hydrogen fermentation has several Strengths compared with other biological methods of hydrogen production such as photosynthetic and photo fermentation because of its ability to produce hydrogen continuously without the presence of light, higher hydrogen production rate, process simplicity, lower net energy input and utilization of low-value waste as raw materials.
3-Process Description Glucose has been the most prevalent carbon substrate in the biological production of hydrogen.