Fracking with super critical C02

摘要

The October 2015 issue of 1663, the Los Alamos national laboratory's (LANL) science and technology magazine, Craig Tyler investigates 'what's lacking with tracking.' As US electricity production shifts from coal to cheap shale gas, per-capita emissions of carbon dioxide have dropped to a level not seen since the 1960s. LANL has been looking into the technical and environmental challenges associated with shale production. Fracking only produces some 15% of gas in place and turns a lot of freshwater into 'highly toxic' wastewater. While the risk from chemical additives used in fracking may have been overplayed, produced water is more problematical, containing large quantities of naturally occurring salts, heavy metals, and radioactive elements.