Abstract
The production of microalgae in laboratory systems is restricted almost exclusively since 500 mL to 20 liters tanks of transparent materials such as glass and plastic, under fluorescent lamps on shelves. In this work we developed a laboratory system which produced up to 50 liters of micro- algae cultivation with comparable productivity to the traditional system in the laboratory, with the potential to increase productivity scale and lower energy consumption per produced volume. The system is built with opaque plastic tank, and illuminated by Plastic Optics Fiber (POF) and LED. The quality of the biomass grown in the culture system on LED is comparable to the tradi- tional cultivation, with scale-up without increasing the occupied area, only with increased height of the tank. The productivity of the tank on LED to the strain Scenedesmus sp. with a phototrophic cultivation reached productivity of around 20 mg•L–1•d–1 and continuing studies may increase further.
Highlights
The illumination of photobioreactors (PBR) for the cultivation of microalgae in the world is done by the use of solar energy
The use of transparent material is required for the lighting of microalgae, since the light energy is essential for the growth of most of them
It is noticed that the values after the groove decreased to 50%. This suggests that part of the light is dissipated through the slot for the cultivation, without excluding the possibility of a small portion of light energy is lost in the modified material by heating the laser beam on the fiber
Summary
The illumination of photobioreactors (PBR) for the cultivation of microalgae in the world is done by the use of solar energy. (2016) Advances for Opaque PBR Internally Illuminated for Fiber Optic for Microalgae Production. The use of transparent material is required for the lighting of microalgae, since the light energy is essential for the growth of most of them. I.e. where the presence of light for microbial growth is required, the use of plastic optical fibers-POF allows an internal illumination of the growth of microalgae, eliminating the use of transparent materials. Richmond (2004) mentioned the alternative use of photobioreactors with optical fibers began in the United States for over 30 years ago from microalgae study for the production of hydrogen gas and light energy was delivered from the concentration of solar mirrors for later delivery to the PBR.
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