Climate tech startup Silicate is set to undertake the first trial of its enhanced weathering technology, which aims to remove C02 permanently from the atmosphere and lock it in the world’s oceans for tens of thousands of years. The trial will involve spreading 500 tonnes of crushed, waste concrete onto 50 hectares (equivalent to 120 football fields) of farmland near Chicago, US. Over the course of a year, the milled concrete will break down in the soil and begin a process called enhanced weathering. As you might recall from high school geography class, chemical weathering is a natural process that…
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