A plan to use CO2 to replace the water used in controversial energy technique fracking has been met with a mixed reception by experts contacted by The Register.
New Scientist reported on work done by Andres Clarens and his team at University of Virginia, Charlottesville, to pump CO2 into fracking sites, which could act as a form of carbon sequestration, and so be a better solution than the water currently used.
The story reports that using CO2 would prevent fracking chemicals from contaminating drinking water supplies.
However, Mark Linder from global PR outfit Bell Pottinger, who has worked with a number of oil and shale companies, told The Register: “Fractures don't come close to aquifers. Also there's no evidence at all of fracture contamination."
"Yes, it is possible that casing could burst during a frac, releasing fluid into the aquifer. But this would be extremely rare, and today's frac fluids are simple. In the UK they are required to be non-toxic," he added.Read more by clicking here.
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