摘要:
A scalable photobioreactor system for efficient production of photosynthetic microorganisms such as microalgae and cyanobacteria is described. In various embodiments, this system may include the use of extended surface area to reduce light intensity and increase photosynthetic efficiency, an external water basin to provide structure and thermal regulation at low cost, flexible plastic or composite panels that are joined together make triangular or other shapes in cross-section when partially submerged in water, use of positive gas buoyancy and pressure to maintain the structural integrity of the photobioreactor chambers and use of structure to optimize distribution of diffuse light. Other embodiments concern air tubes comprised of plastic film at the bottom of each photobioreactor chamber to provide sparging air bubbles to the chamber. The photobioreactor system design also comprises gas exchange, temperature control, air pumping, liquid pumping, filtration, media recycling and harvesting methods. For biofuels production, the photobioreactor system can comprise a separate growth photobioreactor and secondary stress reactor.
摘要:
PROBLEM TO BE SOLVED: To provide a microorganism culture system with light irradiation, etc., capable of preventing temperature rise even in case of being irradiated with visible rays and capable of accurately confirming influence by visible rays while extensively securing a culture region with the identical conditions such as for light wavelength and light intensity. SOLUTION: The microorganism culture system 1 with light irradiation comprises (1) a culture space 10 for microorganism culture, (2) multiple light sources 11 capable of irradiating the culture space 10 with rays of light, emitting visible rays and controllable in irradiation output independently of each other, and (3) culture shelves 65 arranged in the culture space 10 and having a culture region each where the level of irradiation outputted from the light sources 11 is uniform throughout. In this system, the temperature of the culture space can be controlled by a forced air-circulating means 12. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PURPOSE: The titled apparatus, having two photoconductors equipped with a light receptor end at the focal position of a red and a blue color systems provided in a cultivation tank for chlorella, and capable of effectively cultivating the chlorella. CONSTITUTION: An apparatus for cultivating chlorella, having a network material 3 having plural photoconductors 2' at a given interval in a photoconductor cable 2 provided in a cultivation tank 1 for the chlorella with CO 2 blown from the bottom thereof, and the respective photoconductors 2' having many light leakage parts 2" for radiating sunlight led through the cable 2 to the cultivation tank 1 through the light leakage parts 2" thereinto. The photoconductors 2' are constituted of two or more photoconductors 2 1 and 2 2 , and the light receptor end of the light receptor 2 1 is placed at the position of a focal point of a blue light (B) when the sunlight (L) is converged by a lens 12, and the light receptor end of the photoconductor 2 2 is placed at the position of a focal point of a red light (R). COPYRIGHT: (C)1984,JPO&Japio
摘要:
PROBLEM TO BE SOLVED: To provide an improved diffuse light extended surface area water-supported photobioreactor.SOLUTION: There is described a scalable photobioreactor system for efficient production of photosynthetic microorganisms such as microalgae and cyanobacteria. In various embodiments, this system may include: the use of extended surface area to reduce light intensity and increase photosynthetic efficiency; an external water basin to provide structure and thermal regulation at low cost; flexible plastic or composite panels that are joined together making triangular or other shapes in cross-section when partially submerged in water; the use of positive gas buoyancy and pressure to maintain the structural integrity of the photobioreactor chambers; and the use of structure to optimize distribution of diffuse light.