Open AccessCO2 removal via promoted potassium carbonate with glycine: solubility measurement at elevated pressure
Author(s) -
Faezah Isa,
Haslinda Zabiri,
M. A. Shaarif
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/702/1/012039
Subject(s) - solubility , potassium carbonate , solvent , potassium , chemistry , carbonate , absorption (acoustics) , inorganic chemistry , bar (unit) , chemical engineering , materials science , organic chemistry , engineering , composite material , physics , meteorology
Potassium carbonate promoted with glycine is considered as potential candidates for CO 2 removal process as it demonstrated less energy usage during the regeneration process. Hence, in order to model the process at upscale condition, the loading of CO 2 into the promoted solvent is measured at temperature (30-60 0 C) over the elevated pressure (10 bar) using high pressure solubility cell. The equilibrium solubility data is measured for 15wt% potassium carbonate + 3wt% glycine and 20wt% potassium carbonate +5 wt% glycine. This work aims to study the solubility of CO 2 into the promoted solvent at higher operating pressure, thus the vapor liquid equilibrium (VLE) can be derived and further facilitate the development of simulation for CO 2 absorption process at the upscale condition. Results show that the CO 2 is less favor to absorb into the promoted solvent at high temperature since the process is exothermic, thus increasing temperature would decrease the tendency of the absorption process. The comparative analysis also showed that solubility is improved at higher pressure as greater force assist to alleviate the surface stress of the solution.