Definition^1 :

Due to the fast reaction rate of piperazine (PZ) with CO2, it has the potential to act as a promoter in aqueous ammonia (NH3)-based CO2 capture processes

Fundamentals of Piperazine process^2

Calculation :

An average CO2 concentration in flue gases is calculated (Flue_gas_capture model) for the global energy mix, then the capture technology price is recalculated taking into account this variations.

^1: CO2 capture using piperazine-promoted, aqueous ammonia solution: Rate-based modelling and process simulation, https://www.sciencedirect.com/science/article/pii/S1750583617302013 ^2: Aqueous piperazine as the new standard for CO2 capture technology, https://www.sciencedirect.com/science/article/pii/S1385894711001793 ^3: A sequential approach for the economic evaluation of new CO2 capture technologies for power plants, https://www.sciencedirect.com/science/article/pii/S1750583618307461?via%3Dihub