https://doi.org/10.1016/j.cherd.2015.08.012
The above paper reports the influence of column height on CO2 removal efficiency using 40% MEA solvent. The results were shown in Figure 11 and Figure 12 of the above reference. The results were also presented according two different liquid flow rates.
The results showed that by reducing the height of the column, mass transfer was enhanced and comparable CO2 removal efficiency was achieved.