ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Theoretical and experimental investigation regarding the impact of sodium dodecyl sulfate (SDS) on carbon dioxide dissolution

Vahab montazeri, Bahman ZareNezhad, and Atefeh Ghazi

Department of Chemical Engineering, Razi University, Kermanshah, Iran

E-mail: vahab_montazeri@yahoo.com

Received: 8 April 2023  Accepted: 1 August 2023

Abstract:

In this research, the impact of anionic surfactant sodium dodecyl sulfate (SDS) on the solubility of carbon dioxide (CO₂) is examined. A series of new tests are conducted at different pressures (18–30 bar), temperatures (273.15–279.15 K), impeller speed (0–800 RPM), and SDS concentrations (1000–5000 ppm) by using a newly developed batch reactor. SDS has an effective impact on the solubility of CO₂ so that at 25 bar and 6 °C and in the presence of 4000 ppm SDS without any agitating device, it is possible to reach 0.094 final consumed mole. Results showed that reducing the temperature and increasing the pressure has a positive impact on the rate of solubility of CO₂ in the water. On the other hand, increasing the speed of the impeller leads to an increase in the rate of gas dissolution in water, so that at 800 RPM, the time required for complete dissolution is less than 5 min. Also, it can be seen from the results of the experiments that the process of dissolving carbon dioxide in water follows the first-order reaction kinetics. The results show that high separation and dissolution of carbon dioxide can be achieved with high efficiency and low cost.

Keywords: CO2 dissolution; Sodium dodecyl sulfate; Kinetics reaction; Driving force

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03024-7

Chemical Papers 78 (1) 111–118 (2024)