Aqueous Potassium Salt of L-Cysteine as Potential CO 2 Removal Solvent: An Investigation on Physicochemical Properties and CO 2 Loading Capacity

Tengku Nur Adibah Tengku Hassan, Azmi Mohd Shariff (), Nor Faiqa Abd Aziz, Nur Farhana Ajua Mustafa, Lian See Tan, Hairul Nazirah Abdul Halim, Mustakimah Mohamed and Heri Hermansyah
Additional contact information
Tengku Nur Adibah Tengku Hassan: CO2 Research Centre (CO2RES), Institute of Contaminant Management (ICM), Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia
Azmi Mohd Shariff: CO2 Research Centre (CO2RES), Institute of Contaminant Management (ICM), Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia
Nor Faiqa Abd Aziz: CO2 Research Centre (CO2RES), Institute of Contaminant Management (ICM), Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia
Nur Farhana Ajua Mustafa: CO2 Research Centre (CO2RES), Institute of Contaminant Management (ICM), Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia
Lian See Tan: Department of Chemical Process Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Malaysia
Hairul Nazirah Abdul Halim: Faculty of Chemical Engineering & Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi, Arau 302600, Malaysia
Mustakimah Mohamed: CO2 Research Centre (CO2RES), Institute of Contaminant Management (ICM), Universiti Teknologi PETRONAS, Seri Iskandar 32610, Malaysia
Heri Hermansyah: Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

Sustainability, 2023, vol. 15, issue 15, 1-23

Abstract: The operational and economic constraints suffered by amine solvents for CO 2 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 CO 2 -solubility properties of potassium L-cysteine (K-CYS), a naturally occurring amino-acid-based solvent for CO 2 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 CO 2 loading from 2.4190 to 1.1802 mol of CO 2 /mol of K-CYS with increasing solvent concentration from 10 to 30 wt% at 313.15 K and 20 bar (g).

Keywords: absorption; amino acid salts; CO 2 removal; L-cysteine (K-CYS); sterically hindered amino acids (SHAA) (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/15/11558/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/15/11558/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:15:p:11558-:d:1203064

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().