There is provided a process for effecting growth of phototrophic biomass within the reaction zone of a photobioreactor, comprising, after effecting at least a reduction in the molar rate of supply of carbon dioxide to the reaction zone of the photobioreactor, supplying a gaseous photobioreactor exha
There is provided a process for effecting growth of phototrophic biomass within the reaction zone of a photobioreactor, comprising, after effecting at least a reduction in the molar rate of supply of carbon dioxide to the reaction zone of the photobioreactor, supplying a gaseous photobioreactor exhaust, that includes diatomic (or molecular) oxygen being generated by photosynthesis effected within the reaction zone by the supplied carbon dioxide, to a combustion zone of a combustor.
대표청구항▼
1. A process for effecting growth of phototrophic biomass within a reaction zone of a photobioreactor, comprising: generating carbon dioxide-comprising gaseous exhaust material from a carbon dioxide-comprising gaseous exhaust material producing process;supplying the carbon dioxide-comprising gaseous
1. A process for effecting growth of phototrophic biomass within a reaction zone of a photobioreactor, comprising: generating carbon dioxide-comprising gaseous exhaust material from a carbon dioxide-comprising gaseous exhaust material producing process;supplying the carbon dioxide-comprising gaseous exhaust material to the reaction zone of a photobioreactor such that carbon dioxide is thereby supplied to the reaction zone;producing a gaseous headspace material within a headspace of the photobioreactor with gaseous photobioreactor exhaust produced by photosynthesis within the reaction zone; andafter at least reducing the rate of supply of carbon dioxide to the reaction zone of the photobioreactor:(i) discharging at least a fraction of the gaseous headspace material to a space other than that of a combustion zone of a combustor, wherein the discharging effects a reduction in the molar concentration of carbon dioxide of the gaseous headspace material, such that the gaseous headspace material becomes of a quality that is suitable for effecting combustion of a fuel within the combustion zone of a combustor; and(ii) after the discharging in (i), discharging the gaseous photobioreactor exhaust to the combustion zone of the combustor. 2. The process as claimed in claim 1; wherein reducing the rate of supply of carbon dioxide to the reaction zone is defined by reducing the supply of carbon dioxide to the reaction zone, such that, after the reduction, supplying of carbon dioxide to the reaction zone is effected at a reduced molar rate, and the discharging at least a fraction of a gaseous headspace material to a space other than that of the combustion zone of the combustor is effected while the supplying of carbon dioxide to the reaction zone is effected at a reduced molar rate. 3. The process as claimed in claim 2; wherein the discharging of the gaseous photobioreactor exhaust to the combustion zone of the combustor is effected when the gaseous headspace material, within the headspace, is of a predetermined quality that is suitable for effecting combustion of a fuel. 4. The process as claimed in claim 3; wherein the predetermined quality is defined as the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is less than, or equal to, 1.0 mol %, based on the total moles of the gaseous headspace material within the headspace. 5. The process as claimed in claim 3; wherein the predetermined quality is defined as the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to, 20 mol %, based on the total moles of the gaseous headspace material within the headspace. 6. The process as claimed in claim 3; wherein the predetermined quality is defined as the ratio of the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, to the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to, 20. 7. The process as claimed in claim 2; wherein the discharging of the gaseous photobioreactor exhaust to the combustion zone of the combustor is effected in response to sensing of a predetermined quality that is suitable for effecting combustion of a fuel. 8. The process as claimed in claim 7; wherein the predetermined quality is defined as the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is less than, or equal to, a predetermined maximum concentration. 9. The process as claimed in claim 7; wherein the predetermined quality is defined as the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to a predetermined minimum concentration. 10. The process as claimed in claim 7; wherein the predetermined quality is defined as the ratio of the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, to the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to, a predetermined minimum value. 11. The process as claimed in claim 1; wherein the at least reducing the rate of supply of carbon dioxide to the reaction zone includes suspending the supply of carbon dioxide to the reaction zone, such that the supplying of carbon dioxide to the reaction zone is suspended, and the discharging at least a fraction of the gaseous headspace material to a space other than that of the combustion zone of the combustor is effected while the supplying of carbon dioxide to the reaction zone is suspended. 12. The process as claimed in claim 11; wherein the discharging of the gaseous photobioreactor exhaust to the combustion zone of the combustor is effected when the gaseous headspace material, within the headspace, is of a predetermined quality that is suitable for effecting combustion of a fuel. 13. The process as claimed in claim 12; wherein the predetermined quality is defined as the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is less than, or equal to, 1.0 mol %, based on the total moles of the gaseous headspace material within the headspace. 14. The process as claimed in claim 12; wherein the predetermined quality is defined as the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to, 20 mol %, based on the total moles of the gaseous headspace material within the headspace. 15. The process as claimed in claim 12; wherein the predetermined quality is defined as the ratio of the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, to the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to, 20. 16. The process as claimed in claim 11; wherein the discharging of the gaseous photobioreactor exhaust to the combustion zone of the combustor is effected in response to sensing of a predetermined quality that is suitable for effecting combustion of a fuel. 17. The process as claimed in claim 16; wherein the predetermined quality is defined as the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is less than, or equal to, a predetermined maximum concentration. 18. The process as claimed in claim 16; wherein the predetermined quality is defined as the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to a predetermined minimum concentration. 19. The process as claimed in claim 16; wherein the predetermined quality is defined as the ratio of the molar concentration of diatomic (or molecular) oxygen, within the gaseous headspace material within the headspace of the photobioreactor, to the molar concentration of carbon dioxide, within the gaseous headspace material within the headspace of the photobioreactor, that is greater than, or equal to, a predetermined minimum value. 20. The process as claimed in claim 1; wherein the at least reducing the rate of supply of carbon dioxide to the reaction zone of the photobioreactor is such that, after the reduction, carbon dioxide is being supplied to the reaction zone at a reduced molar rate.
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