Sequestration of Carbon Dioxide through in-situ carbonisation of (ultra-) Basic rocks- An energy neutral solution to the CO2 problem

Capture and subsurface storage of carbon dioxide in empty oil and gas fields and saline aquifers is regarded as a serious option to reduce future industrial CO2 emissions from stationary sources. Although empty oil and gas fields have a very large capacity to permanently store CO2, carbon capture and storage (CCS) substantially reduces the overall efficiency and leads to substantial increase of costs. In this report we review an alternative to classical CCS: in-situ carbonation (ISC) of (ultra-)basic rocks. This sequestration method might provide an energy neutral alternative for storage of CO2 in empty and oil and gas fields.