Algal Blooms for CO2 Sequestration in Ocean
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Scientists have known for some time that artificially created algal blooms could be used to absorb greenhouse gases, but the technique has been banned for fear of causing unforeseen side effects in fragile ecosystems. However, based on the UK team’s evidence that the process has been occurring naturally for millions of years, and on a wide scale, the UN has given the green light for a ground-breaking experiment later this month.
The team will seek to create a massive algae bloom by releasing several tons of iron sulphate into the sea off the coast of the British island of South Georgia. The patch will apparently be large enough to be visible from space.
If successful, the technique could be rolled out across vast swathes of the Great Southern Ocean. Scientists calculate that if the whole 20 million square miles was treated, it could remove up to three and a half Gigatons of C02, equivalent to one eighth of all global annual emissions from fossil fuels.
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