Process and system for generating hydrogen
AssigneeHydrobe Pty Ltd
InventorsDuncan Anderson, Cristian Coelho Silva
Life of this patent
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Abstract
Disclosed is a process and system for generating hydrogen from carbon dioxide. The process and system for generating a hydrogen gas stream from a carbon dioxide gas stream comprises converting a first waste carbon dioxide gas stream to an organic feedstock using an algal source in a photosynthesis step. The organic feedstock is then converted using an organism to the hydrogen gas stream and gaseous by-products in a biodecomposition step. The generated hydrogen gas may then be collected.
Claims16
A process for generating a hydrogen gas stream from a carbon dioxide gas stream, the process comprising:
- (i) converting a first waste carbon dioxide gas stream to an organic feedstock using an algal source in a photosynthesis step;
- and
- (ii) subjecting the organic feedstock to biodecomposition, said biodecomposition converting to a first hydrogen gas stream and gaseous by-products, the biodecomposition having sequential steps using bacteria to biodecompose the organic feedstock, said sequential steps comprising:
- as a first step of the sequential steps, an aerobic biodecomposition step subjecting the organic feedstock to aerobic biodecomposition using an aerobic bacteria to produce a first biodecomposition product;
- and
- an anaerobic biodecomposition step using an anaerobic bacteria to biodecompose the first biodecomposition product to produce the first hydrogen gas stream;
- wherein the aerobic bacteria and the anaerobic bacteria are different species.
A process for generating a hydrogen gas stream from a carbon dioxide gas stream, the process comprising:
- (i) mixing a first waste carbon dioxide gas stream and an algal source to form an organic feedstock;
- (ii) treating the organic feedstock in a first biodecomposition step to produce a first biodecomposition product;
- said first biodecomposition step being an aerobic biodecomposition step using aerobic bacterial species;
- and
- (iii) treating the first biodecomposition product in a sequential second biodecomposition step to produce hydrogen gas, said second biodecomposition step being an anaerobic biodecomposition step using anaerobic bacterial species;
- wherein, prior to step (iii), at least a portion of the first biodecomposition product is mixed with the algal source in step (i)
- wherein the aerobic bacterial species and the anaerobic bacterial species are different species.
A process for generating a hydrogen gas stream from a carbon dioxide gas stream, the process comprising:
- (i) converting a first waste carbon dioxide gas stream to an organic feedstock using an algal source in a photosynthesis step, said algal source the algal source comprises one or more algal species capable of photosynthesis;
- and
- (ii) subjecting the organic feedstock to biodecomposition, said biodecomposition converting to a first hydrogen gas stream and gaseous by-products, the biodecomposition having sequential steps using bacteria to biodecompose the organic feedstock, said sequential steps comprising:
- as a first step of the sequential steps, an aerobic biodecomposition step subjecting the organic feedstock to aerobic biodecomposition using an aerobic bacteria to produce a first biodecomposition product, said organic feedstock comprising viable cells of said one or more algal species;
- and
- an anaerobic biodecomposition step using an anaerobic bacteria to biodecompose the first biodecomposition product to produce the first hydrogen gas stream
- wherein the aerobic bacteria and the anaerobic bacteria are different species.
Dependencies are inferred from the claim text.