Abstract

This work investigates the technical feasibility and costs of capturing CO2 from industrial emission sources with CO2 concentrations ranging between 0.04 – 4%. Three types of capture schemes are considered: 1) post-combustion capture through monoethanolamine absorption (MEA-ABS), 2) post-combustion capture through DAC-based technologies: alkali absorption combined with calcium looping (ALK-ABS) and temperature vacuum swing adsorption (TVSA), and 3) offsetting the emissions by regular DAC from the atmosphere using ABS-ALK or TVSA. For this, the cost of on-site capture and transportation coupled to post-combustion capture is compared to that of off-site carbon removal through DAC to investigate which parameters govern the choice of industries emitting CO2 at low concentrations with regard to implement mitigation measures (and through which technique) or rather offset emissions through purchase of negative emission.