In-depth study of simultaneous carbon capture and utilization

To mitigate global climate change all venues to reduce emissions of CO2 and continue the transition to renewable energy sources must be employed. In addition, it is necessary to create CO2 sinks, which offset emissions that cannot be fully eliminated.

To achieve this, implementation of carbon capture and storage (CCS) and negative emissions through bioenergy CCS (BECCS) is vital.The main reason why CCS and BECCS is not implemented today is the high capture cost. This is due to the high energy requirement of the process, related to regeneration of the aqueous absorption liquid.

This project focusses on non-aqueous biphasic amine-based absorption systems (NABSs) that can be regenerated at low temperature, making it possible to use excess heat for the regeneration. The unstable reaction product in NABSs is also a potential starting point for utilization of CO2.

This enables an energy-efficient process utilizing excess heat with the simultaneous conversion of CO2 into valuable products.

This novel approach not only reduces the cost of regeneration drastically, but the need for storage of captured CO2 can be avoided when CO2 is utilized.The aim of this project is to develop a theoretical model that makes it possible to model the behaviour of amines in different non-aqueous solvents.

To achieve this, and enable simultaneous capture and utilization of CO2, filling the current knowledge gaps on the reaction mechanisms, reaction and crystallization kinetics of NABSs is crucial.