Patent DE-102007055569-A1 (DE)
Title: Arrangement for uniform three-dimensional light distribution in reaction volume, which has reaction medium to generate gas-liquid dispersion, comprises light guides, with which the light is supplied into reaction volume to produce biomass
Inventor: WAGNER ARWED
IPC: C12M1/42
Filed: 2007-11-20
Abstract: The arrangement for uniform three-dimensional light distribution in a reaction volume, which contains a reaction medium for generating gas-liquid dispersion, comprises light guides, with which the light is supplied into the reaction volume for producing biomass. The medium is photo-biologically active and contains photoautotrophic micro-organism species such as algae, which alternatively contain characteristic of photoautotrophic and photoheterotrophic. The light is guided in the reaction medium by lamps, light-emitting diodes or light guides. The light guides are arranged in a light tree. The arrangement for uniform three-dimensional light distribution in a reaction volume, which contains a reaction medium for generating gas-liquid dispersion, comprises light guides, with which the light is supplied into the reaction volume for producing biomass. The medium is photo-biologically active and contains photoautotrophic micro-organism species such as algae, which alternatively contain characteristic of photoautotrophic and photoheterotrophic. The light is guided in the reaction medium by lamps, light-emitting diodes or light guides. The light guides are arranged in a light tree in the reaction medium in a longitudinal manner and are completely or partially grounded in the reaction medium in a prism-shaped manner. The gas-liquid dispersion is producible from water and gas with a turbine gasifier. The mineral salts in the water are required for the biomass production. Through the aeration turbine, 0.05-2 liters of gas per liter of water and per minute are introducible. Ten gas bubbles are producible per liter of reaction medium and per minute for the illumination. The gas bubbles are generatable to 10-1000 mm. The sizes of the gas bubbles are variable by tenside. The aeration turbine is surrounded with a plastic- and/or a metal fabric and optionally with plastic coats. The mesh size of the fabric, which surrounds the aeration turbine, is provided, so that the algae are separated from the rotor surface of the aeration turbine. The plastic- and/or metal fabric and optionally with plastic coats have a pressure difference. The aeration turbine sucks the gas in sufficient quantity for mixing with the liquid by the negative pressure produced from it for producing gas-liquid dispersion. A carrier, on which the fabric surrounding the aeration turbine is strained and fastened, is rotationally transferred. The fabric, which surrounds the turbine and consists of plastic, is weaved from longitudinal-luminescent light guides, with which light is radiatable in the gas-liquid dispersion. Solar dishes, solar gutter, lenses or hemisphere provided with prism-shaped edge or other geometries for light-coupling of sunlight are present in the light guide. The light guides, in which the light is coupled, end for uncoupling the light in the reaction medium and consist of plastic and/or glass. An independent claim is included for a method for uniform three-dimensional light distribution in reaction volume.