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A technology of phototrophic biomass and photobioreactor, which is applied in the fields of biomass post-processing, biomass pretreatment, microorganisms, etc.
Active Publication Date: 2014-04-02
POND BIOFUELS INC
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Embodiment 1
[0257] A prophetic example will now be described which exemplifies the implementation of determining a target value for a phototrophic biomass growth indicator, such as algae concentration in the reaction zone of a photobioreactor, and performing the above-described Operation of an embodiment of the process includes adjusting the molar rate of discharge of phototrophic biomass-containing product from the reaction zone based on a deviation between a detected value of said process parameter and a target value.
[0258] First, an initial concentration of algae in an aqueous medium containing appropriate nutrients is provided in the reaction zone of the photobioreactor. Gaseous carbon dioxide is supplied to the reaction zone and the reaction zone is exposed to light from a light source, such as an LED, to allow the algae to grow. When the algae concentration in the reaction zone reaches 0.5 grams per liter, water is introduced into the reaction zone of the photobioreactor to harve...
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Abstract
A process of growing a phototrophic biomass in a reaction zone, including a reaction mixture that is operative for effecting photosynthesis upon exposure to photosynthetically active light radiation, is provided. The reaction mixture includes phototrophic biomass that is operative for growth within the reaction zone. In one aspect, the carbon dioxide supply is modulated in response to detected process parameters. In another aspect, inputs to the reaction zone are modulated based on changes to the carbon dioxide supply. In another aspect, dilution of the carbon dioxide-comprising supply is effected. In another aspect, pressure of the carbon dioxide-comprising supply is increased. In another aspect, water is condensed from the carbon dioxide-comprising supply and recovered for re-use. In another aspect, the produced phototrophic biomass is harvested at a rate which approximates a predetermined mass growth rate of the phototrophic biomass.
Description
[0001] related application [0002] This application is a continuation-in-part of U.S. Patent Application No. 12 / 784,215 filed May 20, 2010, and a continuation-in-part of U.S. Patent Application No. 12 / 784,181 filed May 20, 2010, or May 2010 Continuation-in-Part of U.S. Patent Application No. 12 / 784,172, filed May 20, or a continuation-in-part of U.S. Patent Application No. 12 / 784,141, filed May 20, 2010, or U.S. Patent Application No. 12 / 784,141, filed May 20, 2010 Continuation-in-Part of Patent Application No. 12 / 784,126, also a continuation-in-part of U.S. Patent Application No. 12 / 784,106, filed May 20, 2010, and also U.S. Patent Application No. 13, filed February 7, 2011 / 022,396 as a continuation in part, and also as a continuation in part of the international application PCT / CA2011 / 000574. technical field [0003] The present invention relates to biomass growth methods. Background technique [0004] Phototrophic organisms have been widely cultivated for the producti...
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