NOVELTY - The method comprises contacting a growth medium (106) with a gas comprising carbon dioxide, transferring some of the carbon dioxide from the gas to the growth medium to yield an enriched growth medium (112), where a concentration of dissolved carbon dioxide in the enriched growth medium exceeds a concentration of dissolved carbon dioxide in the growth medium, and dissolved carbon dioxide comprises ions formed by a reaction of carbon dioxide with a species in solution including the ions formed in the growth medium, and providing the enriched growth medium to an algaculture facility (104).    USE - The method is useful for enhancing growth of algae in an algaculture facility such as open ponds and photobioreactors, where the algae is used in the production of foodstuffs, food additives, fertilizers, bioplastics, chemical feedstocks, pharmaceuticals and algal fuels including straight vegetable oil, biodiesel, aviation biofuel, bioethanol, biogasoline, biomethanol, biobutanol and other bio fuels.    ADVANTAGE - The method is capable of providing the carbon dioxide as a dissolved component in solution thus reducing loss of carbon dioxide to the atmosphere associated with providing gaseous carbon dioxide directly to the growth medium, and increasing the concentration of dissolved carbon dioxide in the algaculture facility to enhance growth of the algae.    DETAILED DESCRIPTION - The method comprises contacting a growth medium (106) with a gas comprising carbon dioxide, transferring some of the carbon dioxide from the gas to the growth medium to yield an enriched growth medium (112), where a concentration of dissolved carbon dioxide in the enriched growth medium exceeds a concentration of dissolved carbon dioxide in the growth medium, and dissolved carbon dioxide comprises ions formed by a reaction of carbon dioxide with a species in solution including the ions formed in the growth medium and added to the growth medium, and providing the enriched growth medium to an algaculture facility (104) comprising algae. The enriched growth medium comprises a buffer species. The method further comprises removing the growth medium from a bulk growth medium in an algaculture facility before contacting the growth medium with the gas; harvesting the algae, a metabolic product of algae, or a derivative of the metabolic product from the algaculture facility; subjecting the enriched growth medium to a filtration, dialysis, reverse osmosis, or ion exchange process to alter the concentration of dissolved carbon dioxide in the enriched growth medium before providing the enriched growth medium to the algaculture facility; crystallizing the dissolved carbon dioxide from the enriched growth medium to yield a solid carbon dioxide-containing compound and providing the solid carbon dioxide-containing compound to the algaculture facility; crystallizing the buffer species from the enriched growth medium to yield a solid buffer species; providing the solid buffer species to the carbon dioxide capture facility by conveying the solid buffer species to the carbon dioxide capture facility; removing dissolved compounds or particulate matter from the growth medium before contacting the growth medium with the gas; providing the dissolved compounds or the particulate matter to the algaculture facility; removing water from the growth medium before contacting the growth medium with the gas; adding water to the enriched growth medium before providing the enriched growth medium to the algaculture facility; and exposing the growth medium to light while contacting the growth medium with the gas. The growth medium comprises an additive that increases a rate of transfer of the carbon dioxide from the gas to the growth medium. The ions formed by the reaction of carbon dioxide with a species in solution and added to the growth medium are added in a form of a solution, a slurry or a salt. An INDEPENDENT CLAIM is included for a system for enhancing growth of algae in an algaculture facility.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a system including a carbon dioxide capture facility coupled to an algaculture facility.    Carbon dioxide capture facility (102)    Algaculture facility (104)    Growth medium (106)    Enriched growth medium (112)    Control system. (116)