Buoyant Nutrient Flakes
Currently large parts of the ocean and hence the planet’s surface is now nutrient deficient and thus not contributing to the planet’s ecological balances.
It is in these areas where CO2 can most rapidly be sequestrated from the atmosphere by conversion to biomass using ocean fertilisation through buoyant nutrient flakes. This will exceed by far the speed that can be achieved with any land based method. Most importantly it does not violate the second the law of thermodynamics by requiring the large energy inputs needed to compress CO2 for dangerous high pressure underground storage which is the case for carbon sequestration technologies such as BECCS. It also does not compete with agricultural land, is not susceptible to drought and forest fires and only a trivial amount of additional energy is needed for processing and dissemination of the flakes.
By rapidly converting CO2 into biomass it will also stabilise the ocean acidification crisis. Without tackling this, it is inconceivable that the ocean ecology can survive in anything other than the most diminished state. The consequence of this will be further diminution of the ocean’s ability to sequester CO2.
When done in conjunction with MCB, optimal amount of sunlight can be delivered to the phytoplankton to prevent their sunburn (photo-inhibition) and likewise of coral.
The nutrient mix can also be tailored to favour methanotrophs so oceanic methane can be converted to biomass before it reaches the atmosphere.
There is much unfounded concern raised against this method. One that is often levelled is that one cannot be sure of exactly how much CO2 is sequestrated in a given time period. This however is a virtually irrelevant question as the immediate issue is to take CO2 out of solution by converting it to biomass. On a longer time scale we know that ocean biomass sequestrates CO2 permanently as organic sediments, clathrates and chalk cliffs around the world the world testify. Importantly, this can only be done if the acidification of the ocean can be managed.
A second concern is that this is a dangerous tampering with the balance of nature. However, the balance of nature has already been tampered with and we know from the stabilisation of atmospheric CO2 following the Mount Pinatubo eruption which deposited an estimated 40,000 tonnes of iron rich dust across the oceans that this will work and do so safely. Further evidence is from the Shamal wind that maintains the ecosystem of the Persian Gulf by blowing iron rich sand onto its surface
Blue areas are nutrient defficient