Novel Green Solvents for CO2 Capture

Idowu Adeyemi, Mohammad Abu Zahra, Inas Alnashef

Research output: Contribution to journalConference articlepeer-review

37 Scopus citations


This study investigates the viability of novel green solvents for carbon capture. Three different types of amine based deep eutectic solvents were synthesized at three different molar ratio. The selected amines represent the primary (monoethanolamine), secondary (diethanolamine) and tertiary (methyldiethanolamine) amines, respectively. The CO2 absorption was conducted with a solvent screening set-up (SSS) and the CO2 loading was measured with an 'Elementar' total organic carbon (TOC) analyzer. Thereafter, FTIR of the samples was conducted in order to determine the qualitative analysis for tracking the appearance, disappearance and stability of different functional groups (400-1600 cm-1). The solubility experiments were performed based on the conditions of the absorber in the post-combustion capture process (PCO2 = 15kPa and T = 40oC). Results revealed that amine-based DESs have absorption capacity that is much higher than both 30wt% aqueous amine solutions and conventional DESs. The FTIR broadening of the O-H and N-H stretching of MEA and ChCl individual components, indicates the formation of hydrogen bonds between the two of them in the ChCl-MEA 1:6 before CO2 absorption.

Original languageBritish English
Pages (from-to)2552-2560
Number of pages9
JournalEnergy Procedia
StatePublished - 2017
Event13th International Conference on Greenhouse Gas Control Technologies, GHGT 2016 - Lausanne, Switzerland
Duration: 14 Nov 201618 Nov 2016


  • Amines
  • Choline chloride
  • Deep eutectic solvent
  • Solubility of CO


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