CO2-Based Process Reduces Water Use in Oil Sands Tailings
Green Car Congress
AUGUST 14, 2010
Canadian Natural Resources (CNRL), an independent crude oil and natural gas producer, is applying a technique at its Horizon oil sands plant that uses CO 2 to change the water chemistry of the tailings, resulting in accelerated settling and greatly reduced water use. Using CO 2 , tailings silt separates much faster “and we are able to get that water back into the system, so we are recycling almost all our water,” Laut said. Edmonton Journal.