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US 4,320,594 AGranted
Mass algal culture system
AssigneeBattelle Memorial Institute
InventorLawrence P. Raymond
Life of this patent
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Abstract
An apparatus and process for the culture of algae in a liquid medium is disclosed. The medium circulates through an open trough and is exposed to an atmosphere which is temperature regulated. The nutrient content of the liquid medium is regulated to control the chemical composition growth and reproduction characteristics of the cultured algae. Before it is allowed to strike the medium, sunlight is passed through a filter to remove wavelengths which are not photosynthetically active. Heat energy can be recovered from the filter.
Claims4
A process for sterilization of an algal culture container comprising:
- formulating a liquid culture medium precursor from acidic nutrients;
- filling an algal culture container with the acidic culture medium precursor to sterilize said container;
- and
- adding an alkaline substance to said precursor after completing sterilization to raise the pH of the medium precursor whereby a liquid medium suitable for culture of a desired algal species is formed.
1 more element
Dependencies are inferred from the claim text.