https://doi.org/10.1016/j.egypro.2014.12.438
“Figure 3(left) shows the overall mass transfer coefficients (KG) as a function of temperature of three different solutions. The effect of temperature on the overall mass transfer coefficients is relatively small for all the three ammonia-based solutions. When the temperature increases from 279 to 298 K, the corresponding overall mass transfer coefficients are increased by only 5–12%.
Figure 3(right) presents the effect of SAR- concentration on the overall mass transfer coefficients for CO2 absorption in 3 M NH3+SAR- solutions at 288 K. The effect of SAR- additive concentration is pronounced when its concentration is low. However, when the SAR- concentration reaches a relatively high value, KG does not increase with the increase of SAR- concentration. The highest KG of CO2 in 3 M NH3 + SAR- solutions at 288 K is approximately 2.2 mmol/(s m2 kPa) which is quite close to the CO2 absorption performance into 5 M MEA at 313 K.”