Abstract
In order to study the influence of 2-(1-piperazinyl)-ethylamine (PZEA) as a promoter on the solubility of CO2 in aqueous monoethanolamine (MEA) solution, the equilibrium solubility of CO2 (mole CO2/mole blend solution) in MEA+PZEA aqueous solutions were measured experimentally using a vapor–liquid equilibrium (VLE) equipment at constant total blend concentration of 2.5moldm−3 in temperatures ranging from 30 to 50°C and initial partial pressures between 30 and 70kPa. The response surface methodology (RSM) based on central composite design (CCD) was used to explore the relationship between three independent parameters (1: molar ratio of PZEA to MEA, 2: initial partial pressure of CO2 (PCO2), 3: temperature) on the CO2 loading capacity. Analysis of variance (ANOVA) showed a good agreement between experimental data and statistical model. The maximum CO2 loading capacity occurred at 0.8 (2M PZEA+0.5M MEA) molar ratio of PZEA to MEA.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
