CO2 absorption enhancement by Al2O3 nanoparticles in NaCl aqueous solution

CO2 absorption/regeneration enhancement in DI water with suspended nanoparticles for energy conversion application

“…Therefore, the nanoparticles interrupt the absorption process after a certain concentration of nanoparticles. It means, the nanoparticles become too dense leading to a negative effect after a certain nanoparticle concentration [10,13,20,27]. The presence of too many nanoparticle obstructs the contact between the gas and liquid.…”

“…Furthermore, the nanoparticles crash the bubbles and produce smaller bubbles, which increase the mass transfer during the bubble absorption process [10][11][12][13][14][15][16][17]. It is reported that the use of nanofluids enhances the CO 2 absorption rate [11][12][13][14][15][16][17].…”

“…It was reported that CO 2 mass transfer flux and mass transfer coefficient increased by 22.35% and 59%, respectively, for Fe 3 O 4 /water nanofluids with magnetic fields. While there are many studies on the CO 2 absorption enhancement [7][8][9][10][11][12][13][14][15][16][17], there is no research on CO 2 regeneration performance enhancement by using the nanofluids. Generally, the regeneration process in physical absorption mode needs the energy input.…”

Influences of primary particle parameters and surfactant on aggregation behavior of nanoparticles in nanorefrigerant

“…The existing researches on the aggregation behavior of nanoparticles are focused on the nanofluids with host liquid of water [19,21,24,28e34], aqueous solution [18,30,31,35], ethylene glycol [16,33,36], and other organic fluids [22,29,36]. In these researches, the particle sizes were monitored to evaluate the degree of aggregation.…”

Photothermal conversion characteristics of gold nanoparticles under different filter conditions

“…Rayleigh number, volume fraction, particle size, type of nanomaterial, shape of the enclosure and the orientation of the hot and cold cylinders etc. However, after Lee and Kang [28] used aqueous solution nanofluids to enhance the CO2 absorption of the base fluid, it is concluded that the effect of the nanoparticles on the mass transfer enhancement is more significant in the region of unsaturated state than that of the saturated state.…”