Investigation of the effect of magnetic field on mass transfer parameters of CO2 absorption using Fe3O4‐water nanofluid

Darvanjooghi, Mohammad Hossein Karimi; Pahlevaninezhad, Maedeh; Abdollahi, Ali; Davoodi, Seyyed Mohammadreza

doi:10.1002/aic.15571

Cited by 67 publications

(31 citation statements)

References 41 publications

(58 reference statements)

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“…It has been proposed that the hydrophobic (methyl group) surface of the methyl‐MSNs can enhance the adhesion of nanoparticles to the gas–liquid interface, thereby explaining why methyl‐MSNs were more effective at enhancing CO 2 dissolution in water . It has been also reported that apparent gas equilibrium solubility could increase by adsorption of gas on nanoparticles …”

Section: Resultsmentioning

confidence: 99%

“…15,18 It has been also reported that apparent gas equilibrium solubility could increase by adsorption of gas on nanoparticles. 21,22 To determine the effect of nanoparticle concentration on CO 2 dissolution, nanoparticles of various concentrations (0.1, 0.2, 0.3, 0.4, and 0.5 wt%) were used, and then dissolved CO 2 concentration was measured. Figure 1 shows that the concentration of dissolved CO 2 significantly increased as the concentration of methyl-MSNs increased to 0.2 and 0.3 wt%, respectively, but not thereafter.…”

Section: Resultsmentioning

confidence: 99%

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Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Ahn

Park

et al. 2018

Biotechnology Progress

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Magnetic cobalt ferrite/silica nanoparticles (MSNs) and methyl functionalized MSNs (methyl-MSNs) were used to enhance lipid production in Chlorella vulgaris culture through enhancement of gas-water mass transfer and increased dissolved concentration of CO . Methyl-MSNs enhanced CO -water mass transfer rate better than MSNs, and 0.3 wt% methyl-MSNs are more effective than 0.1 wt% MSNs. In the cultivation experiment, 0.3 wt% methyl-MSNs yielded the highest dry cell weight and subsequently, the highest mass transfer rate. However, enhancement of mass transfer rate did not increase lipid content. The volumetric lipid productivity in C. vulgaris culture depends not only on intracellular lipid content but also on the cell mass concentration. Consequently, 0.1 wt% methyl-MSNs yielded the highest volumetric lipid productivity in C. vulgaris cultivation. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:929-933, 2018.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Ahn

Park

et al. 2018

Biotechnology Progress

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“…Hence, in 1992, the United Nation Conference on Environment and Development offered a new strategy for reducing the emission of acidic and other greenhouse gases to below the standard level until 2000 [1]. Consequently, the governments should finance researchers and scholars to apply new methods and techniques to reduce the amount of CO 2 as well as the SO 2 produced from large-scale industries and sources [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…They concluded that the enhanced CO 2 uptake is due to the mixing effect of Al 2 O 3 nanoparticles, which were caused by the particle-laden flows induced by Brownian motion [24]. In addition, they observed that for the concentration above a critical value, insignificant Brownian motion can be seen since the inter-particle interactions declines this motion [24].Darvanjooghi et al studied the absorption of CO 2 by means of Fe 3 O 4 /water nanofluid during the applied alternating and constant magnetic fields [3]. Their results declared that both CO 2 solubility and mass transfer rate are increased when the strength of magnetic field is high.…”

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The Effect of Various Nanofluids on Absorption Intensification of CO2/SO2 in a Single-Bubble Column

2019

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Application of nanoparticles in aqueous base-fluids for intensification of absorption rate is an efficient method for absorption progress within the system incorporating bubble-liquid process. In this research, SO 2 and CO 2 were separately injected as single raising bubbles containing nanofluids to study the impact of nanoparticle effects on acidic gases absorption. In order to do this, comprehensive experimental studies were done. These works also tried to investigate the effect of different nanofluids such as water/Al 2 O 3 or water/Fe 2 O 3 or water/SiO 2 on the absorption rate. The results showed that the absorption of CO 2 and SO 2 in nanofluids significantly increases up to 77 percent in comparison with base fluid. It was also observed that the type of gas molecules and nanoparticles determine the mechanism of mass transfer enhancement by nanofluids. Additionally, our findings indicated that the values of mass transfer coefficient of SO 2 in water/Al 2 O 3 , water/Fe 2 O 3 and water/SiO 2 nanofluids are, respectively, 50%, 42% and 71% more than those of SO 2 in pure water (k LSO 2 −water = 1.45 × 10 −4 m/s). Moreover, the values for CO 2 in above nanofluids were, respectively, 117%, 103% and 88% more than those of CO 2 in water alone (k LCO 2 −water = 1.03 × 10 −4 m/s). Finally, this study tries to offer a new comprehensive correlation for mass transfer coefficient and absorption rate prediction.Processes 2019, 7, 393 2 of 21 of nanoparticles, leading to induce the micro-convections in nanofluids, has the most impact on mass transfer rate [14]. Ashrafmansouri et al. comprehensively studied previous research and reported an review to highlight the impacts of nanomaterials in heat and mass transfer processes [11]. They reported that much higher thorough studies are needed to disclose the impacts of main parameters including nanoparticles mean size and morphology on absorption rate by using nanofluids. They also exhibited that nanofluid reusing as well as absorption process modeling are the most important subjects for advancement of this technique. In addition, Kim et al. showed that mass transfer rate of ammonia is enhanced when a few nanoparticles are added to the basefluid. They exhibited that bubbles breaking by nanoparticles considerably enhances mass transfer through increasing interfacial area. They also reported that smaller bubbles were produced in nanofluid than in a base fluid, leading to intensification in mass transfer surface area [15].Ma et al. declared that by adding CNTs to a basefluid, the localized micro-convection occurs due to the Brownian motion of nanotubes [16]. They reported that induced convection can intensify the ammonia molecular diffusion within the nanofluid. Moreover, they concluded that the grazing effect can be considered another mechanism enhancing the efficiency of NH 3 by means of the bubble absorption process [16]. Absorption of gas molecules by means of the nanoparticle surfaces at the bubble interface and then removing the adsorbed gas components from the nanoparticles ...

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Magnetoelectric Coupling for Metal–Air Batteries

Wang

Zuo

et al. 2022

Adv Funct Materials

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Metal–air batteries have become one of the new potential sources of electrochemical energy due to the excellent electrochemical characteristics, environmental friendliness and cheap cost. Whereas, the commercialization of the metal–air batteries is still subject to the sluggish kinetics on air electrode and hydrogen evolution corrosion as well as dendrite growth of metal anode. Recently, the applied magnetic field, as a technology for transferring energy across physical space, receives more attention, can improve the performance of metal–air batteries by promoting mass transfer, accelerating charge transfer and enhancing electrocatalytic ability based on magnetohydrodynamic effect, Kelvin force effect, Hall effect, Spin selectivity effect, Maxwell stress effect and Magnetothermal effect. This review provides the recent progress in the research on the relative mechanism and characteristic of the magnetic field in the metal–air batteries.

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Investigation of the effect of magnetic field on mass transfer parameters of CO₂ absorption using Fe₃O₄‐water nanofluid

Cited by 67 publications

References 41 publications

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

The Effect of Various Nanofluids on Absorption Intensification of CO2/SO2 in a Single-Bubble Column

Magnetoelectric Coupling for Metal–Air Batteries

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