Abstract: Disclosed are methods that can advantageously utilize the natural consumptive and conversion processes of an aquatic organism culture system to concentrate and separate microbial plant-generated lipids. For instance, an aquatic organism culture can be maintained and/or grown upon an algal biomass. The natural conversion processes of the animals allows for uptake and processing of the components of the algal biomass into animal lipid. The aquatic animal culture can then be easily harvested such that a high percentage of the converted algal-generated lipid can be extracted using a low cost, simple and quick process. The disclosed processes provide an efficient oil production, conversion and recovery system that can be economically scaled up for use in, for example, integrated bioenergy and biodiesel production.

Abstract: Disclosed are methods that can advantageously utilize the natural consumptive and conversion processes of an aquatic organism culture system to concentrate and separate microbial plant-generated lipids. For instance, an aquatic organism culture can be maintained and/or grown upon an algal biomass. The natural conversion processes of the animals allows for uptake and processing of the components of the algal biomass into animal lipid. The aquatic animal culture can then be easily harvested such that a high percentage of the converted algal-generated lipid can be extracted using a low cost, simple and quick process. The disclosed processes provide an efficient oil production, conversion and recovery system that can be economically scaled up for use in, for example, integrated bioenergy and biodiesel production.

Abstract: A controlled eutrophication system and process are disclosed. The system includes the combination of a partitioned aquaculture system in conjunction with an anaerobic digester. Wastewater containing pollutants, such as nitrogen and phosphorus, are fed to the partitioned aquaculture system. Algae within the system converts the pollutants into algal biomass. Fish populations, in turn, control the algal populations. The fish populations may then be periodically harvested for human or animal consumption. A polishing chamber is contained in the system in which aquatic organisms remove substantial amounts of the algae from batch fed additions of water. The water is then discharged to an external water source containing virtually no pollutants. In one embodiment, the biomass excreted by the aquatic organisms in the system are collected and fed to a digester.

Abstract: The present invention generally relates to a process and system for raising aquatic organisms, such as shellfish, shrimp and fish. More particularly, the present invention is directed to an automated partitioned aquaculture system for raising catfish. The aquiculture system comprises an algal growth channel; at least one raceway for producing and maintaining the aquatic organisms; and a first and second flow control device. The first flow control device is configured to control the flowrate of water through the algal growth channel substantially independently of the flowrate of water in the raceway. By changing the water flowrate, in response to factors in the aquaculture environment, production of aquatic organisms can be substantially increased.

Abstract: A flow of loose solid particles (22, 22a, 22b) accumulates materials which are to be removed from a region (21, 22a, 21b) in which aquatic organisms are confined within a liquid medium (13, 13a, 13b). The particle flow may form a bed at the bottom of the organism containing region that receives waste materials and may also be utilized to scour the walls (16) of the culture vessel (11, 11a, 11b). The particle flow, which may be gravitationally induced, travels down an inclined inner surface (18, 18a, 102) of the culture vessel and out through a submerged outlet (51, 51a, 51b) while blocking escape of the organisms through the outlet. The particles are preferably cleaned and recirculated through the flow. While other usages are possible, the system is particularly adapted to the cultivation of herbivore zooplankton, such as brine shrimp for example, for protein production. High density biomasses of such organisms may be maintained without adverse effects heretofore encountered as a result of waste accumulation.