Combined CO2 absorption/regeneration performance enhancement by using nanoabsorbents

Lee, Jae Won; Pineda, Israel Torres; Lee, Jung Hun; Kang, Yong Tae

doi:10.1016/j.apenergy.2016.06.048

Cited by 91 publications

(47 citation statements)

References 53 publications

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“…The addition of more nanoparticles may lead to absorbing more CO2. However, in this case the adsorption capacity of nanoparticles and the area of the gas-liquid interface will be limited [11]. Besides, the viscosity of nano fluid it's another important property which adversely affected by increase of nanoparticles.…”

Section: Effect Of Nano Particles On the Absorption Ratementioning

confidence: 99%

Improvement of CO2 Absorption/Desorption Rate Using New Nano-Fluid

Shakir¹,

Ahmed²,

Wiheeb³

2021

IJHT

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Increasing the serious impact of the emissions of carbon dioxide (CO2) on the warming of globe and change of climate make this issue is one of the most important issues facing the world that needs to be resolved urgently. Several techniques have been used to control CO2 emissions. One of the methods that achieved good results was the chemical absorption technique using absorption solutions. Recently, nano solutions have been used. This action has received attention. However, further studies are needed to enhance the absorption/desorption of nano fluids and reduce the energy requirements for the regeneration process. In this study, the nanoparticle suspended in blend of monoethanolamine and triethanolamine are utilized as a new solvent. Ultrasonic was used to obtain good suspension of the nanoparticle into the base fluid and also to ensure high stability. The results showed that the CO2 absorption using the Nano fluid is enhanced by ~28% for Al2O3, 19% for Fe2O3 and 15% for SiO2 compared to that with using the base fluid alone. In addition, the rate of CO2 desorption was increased by 47%, 28%, and 22% using the Nano fluids of Fe2O3, SiO2, and Al2O3, respectively, compared with the desorption rate of the base fluid without nanoparticles.

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Section: Effect Of Nano Particles On the Absorption Ratementioning

confidence: 99%

Improvement of CO2 Absorption/Desorption Rate Using New Nano-Fluid

Shakir¹,

Ahmed²,

Wiheeb³

2021

IJHT

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“…Carbon dioxide (CO 2 ) is known as one of the most dangerous greenhouse gaseous which might bring several severe problems like climate change and acid rains if the amount of this exceeds 400 ppm in the atmosphere (Jiang et al 2014; Lee et al 2016;Rangwala 1996). Therefore, it is of importance to seek advanced techniques to decrease the quantity of this dangerous gas in the atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Elhambakhsh

Heidari

Keshavarz

2021

Environ Sci Pollut Res

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In this study, the magnetic based nanoparticle (NP) of Fe 2 O 3 @glutamine (C 5 H 10 N 2 O 3 ) was synthesized to improve the Fe 2 O 3 properties in absorbing carbon dioxide (CO 2 ) using the base uid of hydrous N-Methyl-2-pyrrolidone (NMP) solution (50wt.%), as a physically powerful CO 2 absorbent. To do this, several nano-NMP solutions, in different weight percentages of NPs were rst prepared. Then, in a batch setup, the nano-NMP solutions were directly exposed to CO 2 gaseous (at the pressures of 20, 30, and 40 bar) to clarify the effects of the mass percentage of NPs and initial pressure on CO 2 absorption. Results clearly illustrated that Fe 2 O 3 nano uid was not stable more than 0.025 wt.%. However, Fe 2 O 3 @glutamine nano uid was stable approximately two times more than Fe 2 O 3 nano uid due to the presence of glutamine as a hydrophilic agent in the structure of Fe 2 O 3 @glutamine. Moreover, in comparison to the base uid (NMP solution), although Fe 2 O 3 increased CO 2 absorption up to 9.14%, Fe 2 O 3 @glutamine NPs caused the CO 2 absorption to increase up to 19.41%, which can be determined as the chemical reactions of two amino groups in the glutamine structure with CO 2 and also higher Stability of Fe 2 O 3 @glutamine NPs compared to bare Fe 2 O 3 NPs.

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“…In order to prevent the deposition of TiO 2 nanoparticles in the water, the prepared TiO 2 absorbents were used immediately for absorption experiments. Besides, due to the processes such as convective heat transfer, release of gas bubbles, and inflow it seems that the nanofluid was dispersed continuously during the absorption experiments .…”

Section: Methodsmentioning

confidence: 99%

Detailed performance model of carbon dioxide absorption utilizing titanium dioxide nanoparticles in a wetted wall column

Rashidi

Sohrabi

2019

Env Prog and Sustain Energy

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Physical absorption of carbon dioxide was investigated in a wetted wall column (WWC) using a nanofluid containing titanium dioxide. Central composite response surface design (CCD) has been applied to give useful information about the main and interaction effects of the operational parameters. A quadratic mathematical model has been derived to clearly give a proper model for obtained experimental observations. The model adequacy has been analyzed by the use of analysis of variance (ANOVA), R‐squared coefficients, and lack of fit tests. The predicted values were found to be in good agreement with the general trend of experimental results. The interactive effects of the three effective absorption variables, namely temperature, liquid flow rate, and nanofluid concentration have been evaluated at five levels on the liquid mass transfer coefficient. Measurements of liquid‐side mass transfer coefficient elucidated that the absorption temperature of 25°C, the nanofluid flow rate of 299.88 mL/min, and the nanofluid concentration of 1.0%w, considerably enhances the absorption of carbon dioxide over twice. © 2019 American Institute of Chemical Engineers Environ Prog, 38: e13211, 2019

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Combined CO2 absorption/regeneration performance enhancement by using nanoabsorbents

Cited by 91 publications

References 53 publications

Improvement of CO2 Absorption/Desorption Rate Using New Nano-Fluid

Improvement of CO2 Absorption/Desorption Rate Using New Nano-Fluid

Experimental study of carbon dioxide absorption by Fe2O3@glutamine/NMP nanofluid

Detailed performance model of carbon dioxide absorption utilizing titanium dioxide nanoparticles in a wetted wall column

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