Abstract
Concern has increased about climate change caused by carbon dioxide (CO2) emissions through human activities in recent years. The Intergovernmental Panel on Climate Change predicts a 1.9°C rise in temperature by the year 2100, and this means a reduction in CO2 is vital for human beings and all other life on earth. Therefore, there is an urgent need for the development of CO2 separation processes to mitigate this potential problem. Post-combustion power plants can employ various types of separation technology. Among them, chemical absorption using aqueous amine is more developed and more reliable. The conventional solvents used in the chemical absorption process together with the use of absorbents, ionic liquid, alkanolamines and their blended aqueous solutions are reviewed in this work. Different ionic liquid-based solvents for CO2 absorption and the most effective parameters on mass transfer phenomena between CO2 and solvent are reviewed. The major concerns for this technology, including the physiochemical properties of ionic liquid-based solvents, Henry’s constant and mass transfer coefficient and their correlations, and various factors for effective CO2 absorption, are addressed.
About the authors
Shervan Babamohammadi is a Research Assistant at the Chemical Engineering Department, University of Malaya, Malaysia. He has a Master’s degree in Chemical Engineering from University Technology of Malaysia (UTM). He has worked on green technologies since 2010. He has conducted a series of research works on biofuel and biogas production. Currently he is working on CO2 capture in the Center for Separation Science and Technology (CSST), University of Malaya. His research interests include CO2 capture, transport phenomena, bio-energy and environment.
Ahmad Shamiri is a visiting Research Fellow at the Chemical Engineering Department, University of Malaya, Malaysia. He has over 10 years’ working experience in the gas and petrochemical industry. He is a Chartered Engineer registered with the Engineering Councils, UK. His research interests include process modeling and control, CO2 capture, olefin polymerization, oil, gas and petrochemical industry. He has published more than 20 papers in ISI ranked journals.
Mohamed Kheireddine Aroua is a Senior Professor at the Department of Chemical Engineering and the Deputy Dean at the Institute of Graduate Studies, University of Malaya, Malaysia. He is also heading the Center for Separation Science and Technology (CSST). His research interests include CO2 capture, membrane processes, electrochemical processes using activated carbon, biodiesel production and conversion of bioglycerol to value added chemicals. He has published more than 120 papers in ISI ranked journals with more than 2500 citations. His h-index is 26.
Acknowledgments
This work was carried out at University of Malaya Centre for Separation Science & Technology (CSST) and was financed by UMRG grant no. RP015/2012E and PPP grant no. PG048-2014B.
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