Piperazine was a drug so synthesis at volume is understood. But you think a good write up of this compounds applicability would show how a scale system, eg at a fossil fuel power station could use it.

> Performance metrics achieved in this study underscore its practical significance. The tandem amine scrubbing and electrolysis system records an energy efficiency correlating to approximately 48.8 gigajoules per tonne of CO produced. Such a figure aligns favorably against existing technologies, presenting an economically viable and scalable pathway toward carbon-neutral chemical feedstocks. This milestone energy efficiency could catalyze momentum in the commercialization of integrated CO₂ capture and utilization systems.

I may have my scale wrong but that looks like 13Mwh per tonne of CO2.