The world's first experiment to investigate the impact of a breached storage tank of carbon dioxide on the marine ecosystem has been completed off the coast of Scotland. More than four and a half tonnes of carbon dioxide were pumped into the seabed to simulate a gas leak, as part of a wider investigation into the safety of carbon capture and storage (CCS) technology. The experiment, led by the Plymouth Marine Laboratory, began in May and is focused on assessing the safety of CCS . The technology captures carbon dioxide from power stations before it can be emitted into the atmosphere and then sequesters it under the ocean. There are 15 CCS projects in various stages of development worldwide, but this has been the first attempt to simulate the conditions of a breach in the carbon storage tanks. For the past 30 days, CO2 has been supplied from a "pop-up" lab and has travelled through a borehole under the sediment to the release site, 350 metres from the shore and 12 meters below the seabed of Ardmucknish Bay, near Oban...
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