The UK needs to pull CO2 from the air to meet its net zero targets, and rock dust that reacts with the greenhouse gas could form a big part of the solution to the problem
Rock dust and lime being spread on fields before cultivation. The rock dust could remove vast amounts of CO2 from the airSpreading rock dust across the UK’s farmland could provide almost half of the amount of carbon dioxide removal the country needs to meet its binding net-zero target for 2050, according to a new analysis.said the need to remove vast amounts of carbon dioxide from the atmosphere is “unavoidable” if the world’s climate goals are to be met.
at the University of Sheffield, UK, and his colleagues factored in statistics from past basalt mining and more sophisticated models that account for how soil chemistry affects weathering rates and how the size of the rock particles changes over time.They found that, by mid-century, sprinkling rock dust on UK fields could allow for the absorption of 6 to 30 million tonnes of CO2 a year. That is up to 45 per cent of the carbon removals needed for the country’s net-zero target.
“It’s got overlooked potential to help with the UK net-zero-by-2050 commitment,” says Beerling. “And it has a number of co-benefits that industrial processes don’t have and it’s highly [cost] competitive.”
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