Capturing and burying CO2 deep within sediments on the ocean bed — Is it the right alternative solution to the failure of curbing carbon dioxide emissions across the world? Or how safe is it in the long run? According to researchers, ocean bed is the biggest and the safest place or it? But, for how long?
True, it is ensuring that several hundred meters down in the sediment, the high pressures and low temperatures would quickly liquefy the carbon dioxide or form frozen lattices with water, known as hydrates. To add to the myopic solution, Kurt House, a geoscientist at Harvard University in Massachusetts, US say that it is even safe from earthquakes as they would not shift it and the available space is vast.
But, it is also a known fact that if climate change warms the oceans, the hydrates stored, may be released back into the atmosphere along with the natural methane hydrates that are contained in sediments at those depths!
As a precaution, House suggests avoiding injecting CO2 into the methane hydrates, as it may destabilize them. He adds that for that to happen, the ocean’s bottom would have to warm by more than 5°C! – And he is satisfied that, ‘it is very unlikely’. But, how long? Are we actually leaving a safe world to our future generations? Can we afford to be so selfish and myopic with our vision in serving the earth?