Experimental study of CO 2 absorption in aqueous MEA and MDEA solutions enhanced by nanoparticles

Jiang, Jingjie; Zhao, Bo; Zhuo, Yuqun; Wang, Shujuan

doi:10.1016/j.ijggc.2014.08.004

Cited by 103 publications

(48 citation statements)

References 21 publications

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“…After reaching the highest solubility at the optimum concentration of nanoparticles, further addition of nanoparticle decreases solubility. This trend has been reported for various nanoparticles in similar studies by Keshishian [21] and Jiang et al [1]. As soon as the gas is absorbed in the nanofluid, the stable nanoparticles break the gas bubbles into smaller ones thus expanding the mass transfer zone.…”

Section: Effect Of Go-npssupporting

confidence: 77%

“…Numerous studies have been conducted to preserve carbon dioxide at a higher efficiency and lower energy consumption [1]. From the time, Svante August Arrhenius first discussed the effects of carbon dioxide on global warming until the present time that its concentration has reached 400 ppm due to excessive release of carbon dioxide into the atmosphere [2], and is the most important reason for the effect of greenhouse gases on global warming (IPCC 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Later on, Choi [14] developed the concept considerably at the Argonne National Laboratory. Concerning the absorption of carbon dioxide gas, laboratory results suggest that some nanoparticles can significantly increase carbon dioxide absorption [1]. Furthermore, addition of nanoparticles to the solvent can increase mass transfer intensity.…”

Section: Introductionmentioning

confidence: 99%

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Solubility and absorption rate of CO2 in MEA in the presence of graphene oxide nanoparticle and sodium dodecyl sulfate

et al. 2019

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The aim of this work is to find the effect of the adding graphene oxide nanoparticle ands dodecyl sulfate (SDS) on the absorption rate and solubility of CO 2 in mono-ethanolamine (MEA) solvent. To this end, an experimental setup was designed and constructed to measure the gas solubility in the solvent and the absorption rate during the process. The experiments were conducted at ambient temperature and initial pressure of 20 bar. The parameters analyzed in this paper included GO-NPS at 0.0375, 0.05, 0.075 and 0.1%, SDS at the same percentages, and the simultaneous effects of both additives. In each experiment, the absorption rate and solubility were calculated by recording the temperature and pressure variations in the absorption and loading chambers. The results indicated that the highest effect of GO-NPS was in the concentration of 0.05%, increasing solubility by up to 7.62%. These values for SDS were 0.075% and 8.39%, respectively. In the experiment with both additives at 0.05% and 0.075% for GO-NPS and SDS, solubility increased by 6.32% and simultaneous presence of both compounds had the greatest effect on absorption rate. Comparison of the results of mole variations suggested that addition of nanoparticles and surfactants both increased the absorption rate.

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Section: Effect Of Go-npssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

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Solubility and absorption rate of CO2 in MEA in the presence of graphene oxide nanoparticle and sodium dodecyl sulfate

et al. 2019

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“…With a further supply of gas mixture, the collision and extrusion of the bubble pairs caused the liquid film to gradually thin into a submicron thickness . Under such circumstances, depending on the balance between the surface tension, fluid dynamics, and surface force, when the thickness of the liquid film reached a threshold, the bubble pairs coalesced to form a leading bubble . According to the Young‐Laplace equation, the different volumes of bubble pairs led to different internal pressures of gas phase, causing a severe convection impact inside the leading bubble after coalescence.…”

Section: Resultsmentioning

confidence: 99%

Experimental investigation of coalescence behaviour of bubble pairs forming at capillary orifices submerged in bacterial suspension

et al. 2019

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Coalescence behaviour of bubble pairs markedly affected methane bioconversion because methane is usually pumped into a bacterial suspension through an aeration system, forming bubbles at capillary orifices. In the present work, a bioreactor was developed to observe the coalescence behaviour of bubble pairs forming at capillary orifices submerged in bacterial suspension via a visualization experiment. The results indicated that in a bacterial suspension the inrush bubble number decreased and the inrush time shortened, but the contact time was prolonged and the maximum contact area increased compared to those in pure water. Moreover, with an increase in the gas flow rate, the maximum contact area decreased and the contact time shortened, while more trailing bubbles merged into the leading bubble. Furthermore, the increase in the centre distance was conducive to increasing the maximum contact area and prolonging the contact time but the bubble inrush was observed at a centre distance of 0.94 mm. In addition, the larger centre distance enhanced the oscillation amplitude and frequency of the aspect ratio, which had not significantly changed at different gas flow rates. The results of this study will contribute to the optimal design of an aeration system that enhances the performance of the bioreactor.

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“…For a concentration range of 0.06–24 wt%, a decrease in the percentage of CO 2 separation was observed for both CNT and SiO 2 . Jiang et al 15 studied four nanoparticles, namely: silica (SiO 2 ,), titanium oxide (TiO 2 ,) magnesium oxide (MgO) and aluminum oxide (Al 2 O 3 ), as well as two base fluids, namely monoethanolamine (MEA) and diethanolamine (MDEA), through a bubbling reactor. Results revealed that absorption of CO 2 by the nanoparticles was better in MDEA compared to MEA.…”

Section: Introductionmentioning

confidence: 99%

CFD simulation of CO2 absorption by water-based TiO2 nanoparticles in a high pressure stirred vessel

Ghasem

2021

Sci Rep

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This work presents the modeling and simulation of CO2 capture by a water-based Titanium dioxide (TiO2) solid nanoparticle in a stirred high-pressure vessel at a constant temperature. Photocatalytic material such as TiO2 has excellent properties, namely it is nontoxic, inexpensive, and non-polluting. CFD model equations are developed and solved using COMSOL software package. The effect of the concentration of a solid nanoparticle in a water-based TiO2 solution, the size of TiO2 nanoparticles and the rate of mixing on the CO2 absorption rate is investigated. A 2D mathematical model considers both shuttle and micro-convention mechanisms. Results reveal that the best TiO2 concentration range is between 0.5 and 1 kg/m3 and that a particle size of 10 nm is more efficient than higher particle sizes. A moderate mixing rate maximizes the CO2 removal rate. The theoretical predictions are validated using lab experimental data and those in the available literature. Results confirm that the model calculations match with the experimental results. Accordingly, the model successfully predicts the experimental data and can be used for further studies.

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Experimental study of CO 2 absorption in aqueous MEA and MDEA solutions enhanced by nanoparticles

Cited by 103 publications

References 21 publications

Solubility and absorption rate of CO2 in MEA in the presence of graphene oxide nanoparticle and sodium dodecyl sulfate

Solubility and absorption rate of CO2 in MEA in the presence of graphene oxide nanoparticle and sodium dodecyl sulfate

Experimental investigation of coalescence behaviour of bubble pairs forming at capillary orifices submerged in bacterial suspension

CFD simulation of CO2 absorption by water-based TiO2 nanoparticles in a high pressure stirred vessel

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