The Department of Chemical Engineering is discussing a master's thesis on carbon dioxide absorption by eutectic solvents.

The Department of Chemical Engineering at the University of Technology discussed the master's thesis tagged.

Absorption of carbon dioxide by a deep eutectic solvent

The student Muhammad Nouri Jassim's thesis aimed at studying the reduction of carbon dioxide emissions into the atmosphere, as this leads to higher temperatures, increased pollution and health problems.

In this work, three types of eutectic solvents were used, such as 1-choline chloride-2-urea, 1-choline chloride-3-phenol and 1-choline chloride-6-monoethanolamine at a concentration of (0-3) mol/L. The ionic liquid is mixed with canolamin such as MEA at a concentration of (4mol/L) and water to increase the adsorption efficiency.

The compound central design (CCD) method was applied to reduce the number of trials needed to optimize the operating conditions. In the adsorption experiments, the effect of the solution temperature (25-45) C, the solvent concentration (0-3) mol/L and the adsorption time (60-150 minutes) were studied to determine the optimal operating conditions on the performance of the adsorption process.

Experimental data showed that the best solvent for capturing carbon dioxide is 1-choline chloride 2-urea under operating conditions with a temperature of 35 °C, a concentration of 1.5 mol/L of solvent, and 105 minutes of adsorption time. Optimal operating conditions for CO capture were achieved according to the following specifications: CO2 concentration output 1.258%, adsorption rate 0.078 mol/kg min, CO2 loading 7.977 mol CO2/kg, adsorption capacity 0.350 kg CO2/kg solvent, The solubility was 0.068 mol / mol and the adsorption efficiency was 92% for the solution. In this research, the reaction kinetics of carbon dioxide for the best solvent was the reaction rate constant (0.38) min -1, and the forward reaction was

(k1 = 0.0447) L/mol/min and the back reaction was (k2) = 6.2×10-4 L 3/mol 2. The order of the reaction was first order and the mass transfer coefficient was (0.1443) mol/bar/l min.

And the discussion committee consisted of Prof. Dr. Khaled Ajami Sukkar Abdul-Rubaie Chairman. And the membership of Prof. Dr. Naseer Abboud Issa and Dr. Haider Abdul Karim Mohsen. And under the supervision of Prof. Dr. Thamer Jassim Muhammad and Prof. Dr. Abdel Moneim Abbas Karim. In addition to evaluating the thesis scientifically by Prof. Dr. Asrar Abdullah Mohsen from the University of Baghdad / College of Engineering / Department of Chemical Engineering and Prof. Dr. Sabri Saihoud Hamid from the University of Technology. and linguistically by Dr. Farooq Ahmed Mehdi from the University of Technology. The thesis was accepted with appreciation (Excellence).