Water sampling showing the way for safe carbon capture storage
A cost-effective method for monitoring CO2 stored below ground has been pioneered by a UK-Australian team. The researchers discovered that the oxygen composition of water stored in rocks changed when in contact with bubbles of trapped CO2. Testing samples of water for this altered form of oxygen provides a simple technique for measuring levels of CO2 stored in rock and the team said that as only the CO2 and the water samples before and after injection of the CO2 need to be measured, this makes for a very cost-effective monitoring solution.

Water sampling technique to monitor underground CO2 storage

A simple, cost-effective way to monitor CO2 stored underground has been developed by a UK-Australian collaboration.