TY - JOUR
T1 - Understanding the solubility of water in carbon capture and storage mixtures
T2 - An FTIR spectroscopic study of H2O+CO2+N2 ternary mixtures
AU - Foltran, Stéphanie
AU - Vosper, Matthew E.
AU - Suleiman, Norhidayah B.
AU - Wriglesworth, Alisdair
AU - Ke, Jie
AU - Drage, Trevor C.
AU - Poliakoff, Martyn
AU - George, Michael W.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - The solubility of water (H2O) in carbon dioxide (CO2) and nitrogen (N2) mixtures (xN2=0.050 and 0.100, mole fraction) has been investigated at 25 and 40°C in the pressure range between 8 and 18MPa. The motivation for this work is to aid the understanding of water solubility in complex CO2-based mixtures, which is required for the safety of anthropogenic CO2 transport via pipeline for carbon capture and storage (CCS) technology. The measurements have been performed using an FTIR spectroscopic approach and demonstrate that this method is a suitable technique to determine the concentration of water in both pure CO2 and CO2+N2 mixtures. The presence of N2 lowers the mole concentration of water in CO2 by up to 42% for a given pressure in the studied conditions and this represents important data for the development of pipelines for CCS. This work also provides preliminary indications that the key parameters for the solubility of H2O in such CO2+N2 mixtures are the temperature and the overall density of the fluid mixture and not solely the given pressure of the CCS mixture. This could have implications for understanding the parameters required to be monitored during the safer transportation of CO2 mixtures in CCS pipelines.
AB - The solubility of water (H2O) in carbon dioxide (CO2) and nitrogen (N2) mixtures (xN2=0.050 and 0.100, mole fraction) has been investigated at 25 and 40°C in the pressure range between 8 and 18MPa. The motivation for this work is to aid the understanding of water solubility in complex CO2-based mixtures, which is required for the safety of anthropogenic CO2 transport via pipeline for carbon capture and storage (CCS) technology. The measurements have been performed using an FTIR spectroscopic approach and demonstrate that this method is a suitable technique to determine the concentration of water in both pure CO2 and CO2+N2 mixtures. The presence of N2 lowers the mole concentration of water in CO2 by up to 42% for a given pressure in the studied conditions and this represents important data for the development of pipelines for CCS. This work also provides preliminary indications that the key parameters for the solubility of H2O in such CO2+N2 mixtures are the temperature and the overall density of the fluid mixture and not solely the given pressure of the CCS mixture. This could have implications for understanding the parameters required to be monitored during the safer transportation of CO2 mixtures in CCS pipelines.
KW - Carbon capture and storage
KW - Carbon dioxide
KW - Infrared spectroscopy
KW - Phase behaviour
KW - Pipeline
KW - Water
UR - http://www.scopus.com/inward/record.url?scp=84923372639&partnerID=8YFLogxK
U2 - 10.1016/j.ijggc.2015.02.002
DO - 10.1016/j.ijggc.2015.02.002
M3 - Article
AN - SCOPUS:84923372639
SN - 1750-5836
VL - 35
SP - 131
EP - 137
JO - International Journal of Greenhouse Gas Control
JF - International Journal of Greenhouse Gas Control
ER -