TY - JOUR
T1 - Aqueous Potassium Salt of L-Cysteine as Potential CO2 Removal Solvent
T2 - An Investigation on Physicochemical Properties and CO2 Loading Capacity
AU - Tengku Hassan, Tengku Nur Adibah
AU - Mohd Shariff, Azmi
AU - Abd Aziz, Nor Faiqa
AU - Mustafa, Nur Farhana Ajua
AU - Tan, Lian See
AU - Abdul Halim, Hairul Nazirah
AU - Mohamed, Mustakimah
AU - Hermansyah, Heri
N1 - Funding Information:
This research was funded through an industrial collaboration between Universiti Teknologi PETRONAS, Universiti Malaysia Perlis (UNIMAP), and Robolab via Joint Research Project (JRP) (Grant Number: 015MD0-074). This research was also funded by Yayasan Universiti Teknologi PETRONAS (Grant Number: 015LC0-136). The article processing charges for this manuscript was funded by research grant (015MD0-126) and CO2 Research Centre (CO2RES), Universiti Teknologi PETRONAS (015LB0-081).
Publisher Copyright:
© 2023 by the authors.
PY - 2023/8
Y1 - 2023/8
N2 - The operational and economic constraints suffered by amine solvents for CO2 removal have motivated the research on an alternative solvent with better performance and cost-effectiveness. Amino acid salt (AAS) has been identified as an interesting green solvent, an alternative to commercial amine solvents. The present work evaluated the physicochemical and CO2-solubility properties of potassium L-cysteine (K-CYS), a naturally occurring amino-acid-based solvent for CO2 removal from natural gas. Its physicochemical properties, including density, viscosity, and refractive index, were measured at different temperatures ranging between 298.15 and 333.15 K and a concentration range of 5 to 30 wt.%. Based on the experiment, all properties were found to decrease with increasing temperature and increase with increasing concentration. The experiments also demonstrated a significant reduction of CO2 loading from 2.4190 to 1.1802 mol of CO2/mol of K-CYS with increasing solvent concentration from 10 to 30 wt% at 313.15 K and 20 bar (g).
AB - The operational and economic constraints suffered by amine solvents for CO2 removal have motivated the research on an alternative solvent with better performance and cost-effectiveness. Amino acid salt (AAS) has been identified as an interesting green solvent, an alternative to commercial amine solvents. The present work evaluated the physicochemical and CO2-solubility properties of potassium L-cysteine (K-CYS), a naturally occurring amino-acid-based solvent for CO2 removal from natural gas. Its physicochemical properties, including density, viscosity, and refractive index, were measured at different temperatures ranging between 298.15 and 333.15 K and a concentration range of 5 to 30 wt.%. Based on the experiment, all properties were found to decrease with increasing temperature and increase with increasing concentration. The experiments also demonstrated a significant reduction of CO2 loading from 2.4190 to 1.1802 mol of CO2/mol of K-CYS with increasing solvent concentration from 10 to 30 wt% at 313.15 K and 20 bar (g).
KW - absorption
KW - amino acid salts
KW - CO removal
KW - L-cysteine (K-CYS)
KW - sterically hindered amino acids (SHAA)
UR - http://www.scopus.com/inward/record.url?scp=85167891926&partnerID=8YFLogxK
U2 - 10.3390/su151511558
DO - 10.3390/su151511558
M3 - Article
AN - SCOPUS:85167891926
SN - 2071-1050
VL - 15
JO - Sustainability (Switzerland)
JF - Sustainability (Switzerland)
IS - 15
M1 - 11558
ER -
