In this paper, we address these concerns and demonstrate for the first time that all of them can be either disregarded or neglected when employing a pressure swing process for HBCC in a fixed bed of ice. By operating at temperatures as low as 233 K we are pushing the limit of residual CO 2 in the product gas to record-breaking levels at pressures no larger than 40 bar. Kinetic limitations are effectively mitigated by the use of a large surface area that can be successfully restored after every capture-regeneration cycle presumably via a pore network that forms naturally as a consequence of small density differences between ice and hydrate . Besides proving the feasibility of the concept in continuous, batch, and semi-batch cycles, novel equilibrium data for mixed N 2 -CO 2 hydrates of various compositions are provided for several temperature levels below the ice-point. Conservative estimates for attainable KPIs such as specific energy consumption, split fraction, and separation factor, are obtained from a high-level thermo-economic analysis, to highlight the competitiveness of the novel process, even at this very early stage of development.