So I am actually interested in this endeavor and want to know if it is still possible. Here are a few things I found out.
-Earth probably cannot undergo homeostasis with the sudden spike of CO2. Planet will burn oceans will die due to lack of dissolved oxygen.
-Carbon Sequestration is needed on a global scale.
-building carbon sucking industrial sites will take land, time, money energy to build and operate.. yield per investment will be low
-Earth is 70% ocean, 30% land.
-Plant carbon that sinks out in the open ocean removes that carbon from the cycle.
-Biology is capable of carbon sequestration, self replication, living in the ocean. Therefore a pelagic solution is required.
-Kelp is the fastest growing photosynthetic multicellular organism, but on the coastline due to Nitrate & phosphate needs. Also needs attachment point on the bottom.
-some species grow in the open ocean! negligible nutrient requirements. Can it be done?
-Sargassum blooms are a new event that have been occurring in the sargasso sea.
-Genetically mutate a strain of sargassum to grow faster, bigger, denser, with rupturing gas sacks upon death.
-fertilize the open oceans with nitrates, phosphates, and seed them with the strains using commercial flights
-track the blooms with satellites to estimate yields, health, etc
-Current Sargassum blooms only occur between Africa and the Caribbeans, yielding ~50Megatons carbon.
-Humanity releases 2GigaTon Carbon in excess, but now solar is cheaper than coal and oil!
-Only need to make sure global climate collapse does not occur during our transition, so it's not completely hopeless.
