Injecting industrial CO2 into deep geological strata could be a safe and economical means of storing it, either dissolved in solution or absorbed by carbonate minerals. Chris Ballentine and colleagues used noble gas and isotope tracers to identify what happens to CO2 in gas fields in North America, China and Europe that provide a natural model of geological storage of anthropogenic CO2 over millennia. They find that dissolution in water is the main mechanism.
- Stuart M. V. Gilfillan
- Barbara Sherwood Lollar
- Chris J. Ballentine