Experimental Investigation of Mass Transfer Intensification for CO 2 Capture by Environment-Friendly Water Based Nanofluid Solvents in a Rotating Packed Bed

Farhad Ghadyanlou, Ahmad Azari and Ali Vatani
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Farhad Ghadyanlou: Faculty of Petroleum, Gas and Petrochemical Engineering (FPGPE), Persian Gulf University, Bushehr 75169-13817, Iran
Ahmad Azari: Faculty of Petroleum, Gas and Petrochemical Engineering (FPGPE), Persian Gulf University, Bushehr 75169-13817, Iran
Ali Vatani: School of Chemical Engineering and Institute of LNG, College of Engineering, University of Tehran, Tehran 14179-35840, Iran

Sustainability, 2022, vol. 14, issue 11, 1-19

Abstract: In this research, two intensification approaches for CO 2 capture via a rotating packed bed (RPB) and nanofluids were examined simultaneously to maximize the experimental mass transfer coefficient. The two intensification approaches were done by using water as a green, environmentally friendly absorption solvent and as the base fluid for preparing nanofluids and also by using centrifugal acceleration in an RPB. Physicosorption of CO 2 in an RPB was carried out by applying Al 2 O 3 , TiO 2 , and SiO 2 nanofluids to intensify the mass transfer in water, and the operation parameters such as the angular speed of the rotor, concentration and type of nanoparticles, gas and liquid flow rates, and CO 2 concentration in mass transfer intensification were evaluated and several nanofluids were selected to survey investigate how they affect the mass transfer at low pressure. The results show that the Al 2 O 3 nanofluid was more effective than other nanofluids and that the 40 nm nanofluid of this type was more efficient than the 20 nm size. Therefore, a correlation is proposed in this paper for liquid volumetric mass transfer coefficient prediction that includes the microconvection of nanoparticles and surface tension.

Keywords: RPB; CO 2 capture; nanofluids; mass transfer coefficients; nanoparticles; Weber number (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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