Modelling and Evaluation of Bubble Chromatography

This paper reports the establishment of a theoretical model of a bubble chromatography system, based on our previous experimental results [1], to investigate into characteristics and limitations in the gas-to-bubble conversion. The established model (i) utilized the gas loss mechanism into a bubble volume equation, and (ii) successfully described the phenomena of reduction in bubble diameters when a target gas was injected in comparison to those of a carrier gas. The established bubble volume model successfully predicted the volume of a single gas bubble that matched with the experimental measurements by considering 40.45% volumetric loss of input gases into liquid during bubble formation as confirmed by two experiments: quantitative analysis of CO2and pentane in liquid. The established bubble chromatogram model successfully predicted the volume of a binary gas mixture bubble with experimental data, by considering two different volumetric losses (50% and 40%) for a binary mixture of pentane target and helium carrier gas.