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US 12,426,556 B2Granted
Systems and methods for algae cultivation using direct air capture
AssigneeGlobal Algae Technology, LLC
InventorsDavid A. Hazlebeck, William Rickman, Paul Hazlebeck
Life of this patent
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Abstract
Embodiments of the disclosure provide systems and methods for supplying an algae cultivation fluid with nutrients (e.g., carbon dioxide and nitrogen) directly from the atmosphere. Supplying nutrients directly from the atmosphere reduces operational costs and environmental impacts, as well as provides greater flexibility in locating algae farms.
Claims26
A method comprising the steps of:
- culturing algae in at least one channel having a bottom surface, opposing side walls coupled to the bottom surface, and an algae cultivation fluid disposed in the at least one channel;
- and
- applying bore waves through the algae cultivation fluid at a bore wave frequency sufficient to disrupt an air-liquid interface of the algae cultivation fluid to induce direct absorption of atmospheric carbon dioxide from air into the algae cultivation fluid,
- wherein the bore wave frequency, a bore wave intensity, or a combination thereof is adjusted to obtain a minimum bicarbonate concentration in the algae cultivation fluid from 1 mM to 150 mM.
1 more element
A method comprising the steps of:
- culturing algae in at least one channel having a bottom surface, opposing side walls coupled to the bottom surface, and an algae cultivation fluid disposed in the at least one channel;
- and
- applying bore waves through the algae cultivation fluid at a bore wave frequency sufficient to disrupt an air-liquid interface of the algae cultivation fluid to induce direct absorption of atmospheric carbon dioxide from air into the algae cultivation fluid,
- wherein an equivalent bicarbonate concentration of sodium ions in the algae cultivation fluid and the bore wave frequency are selected to maintain a difference between a maximum and minimum pH during day light hours of less than 0.8 pH units.
1 more element
A method comprising the steps of:
- culturing algae in at least one channel having a bottom surface, opposing side walls coupled to the bottom surface, and an algae cultivation fluid disposed in the at least one channel;
- and
- applying bore waves through the algae cultivation fluid at a bore wave frequency sufficient to disrupt an air-liquid interface of the algae cultivation fluid to induce direct absorption of atmospheric carbon dioxide from air into the algae cultivation fluid,
- wherein the bore wave frequency, a bore wave intensity, or a combination thereof is adjusted to maintain a pH in the algae cultivation fluid of less than 11.
1 more element
Dependencies are inferred from the claim text.