Recent Advances in the Synthesis, Application and Economic Feasibility of Ionic Liquids and Deep Eutectic Solvents for CO 2 Capture: A Review

Syed Awais Ali, Waqad Ul Mulk, Zahoor Ullah, Haris Khan, Afrah Zahid, Mansoor Ul Hassan Shah and Syed Nasir Shah ()
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Syed Awais Ali: Department of Mechanical Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology Taxila, Rawalpindi 47080, Pakistan
Waqad Ul Mulk: Department of Mechanical Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology Taxila, Rawalpindi 47080, Pakistan
Zahoor Ullah: Department of Chemistry, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta 87100, Pakistan
Haris Khan: Department of Mechanical Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology Taxila, Rawalpindi 47080, Pakistan
Afrah Zahid: Department of Chemistry, The Women University, Multan 54500, Pakistan
Mansoor Ul Hassan Shah: Department of Chemical Engineering, University of Engineering and Technology, Peshawar 25120, Pakistan
Syed Nasir Shah: Department of Energy Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology Taxila, Rawalpindi 47080, Pakistan

Energies, 2022, vol. 15, issue 23, 1-31

Abstract: Global warming is one of the major problems in the developing world, and one of the major causes of global warming is the generation of carbon dioxide (CO 2 ) because of the burning of fossil fuels. Burning fossil fuels to meet the energy demand of households and industries is unavoidable. The current commercial and experimental techniques used for capturing and storing CO 2 have serious operational and environmental constraints. The amine-based absorption technique for CO 2 capture has a low absorption and desorption ratio, and the volatile and corrosive nature of the solvent further complicates the situation. To overcome all of these problems, researchers have used ionic liquids (ILs) and deep eutectic solvents (DESs) as a replacement for commercial amine-based solvents. ILs and deep eutectic solvents are tunable solvents that have a very low vapor pressure, thus making them an ideal medium for CO 2 capture. Moreover, most ionic liquids and deep eutectic solvents have low toxicity and can be recycled without a significant loss in their CO 2 capture capability. This paper first gives a brief overview of the ILs and DESs used for CO 2 capture, followed by the functionalization of ILs to enhance CO 2 capture. Moreover, it provides details on the conversion of CO 2 into different valuable products using ILs and DESs, along with an economic perspective on using both of these solvents for CO 2 capture. Furthermore, it provides insight into the difficulties and drawbacks that are faced by industries when using ILs and DESs.

Keywords: ionic liquids; deep eutectic solvents; functionalization; CO 2 capture; catalytic conversion of CO 2 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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