Adsorption of Carbon Dioxide on Monoethanolamine (MEA)–Impregnated Kenaf Core Fiber by Pressure Swing Adsorption System (PSA)

Emission of carbon dioxide (CO2) becomes a major concern in combating issues of global warming. The strategy to reduce the concentration of CO2 could be achieved by executing carbon capture and storage (CCS) technology such as adsorption. This study presents the used of kenaf as a green source for CO2 adsorption material. The modification of MEA on kenaf is a novelty work to enhance the capacity of adsorbent since MEA has been proved to have potential in separating CO2 in industrial applications. In this work, 10 wt % of MEA has been impregnated on kenaf via wet impregnation method. The adsorption of CO2 study was conducted by passing CO2/N2 mixture in a ratio of 30:70 in a Pressure Swing Adsorption (PSA) system with a pressure up to 1.5 bar at ambient temperature. Result obtained via SEM analysis shows that the morphology of kenaf was affected after modification with MEA. However, the presence of MEA on kenaf has improved the CO2 adsorption capacity by 16 %. In addition, the adsorption equilibrium data for kenaf and MEA modified kenaf are well fitted in Freundlich isotherm model at low pressure and well fitted in Langmuir model at higher pressure. This study indicates that the introduction of MEA on kenaf could enhance the CO2 adsorption process.

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Mineral carbonation process of carbon dioxide using animal bone

Science Progress ◽

10.1177/00368504211019644 ◽

2021 ◽

Vol 104 (2) ◽

pp. 003685042110196

Author(s):

Brendon Mpofu ◽

Hembe E Mukaya ◽

Diakanua B Nkazi

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Carbon Capture And Storage ◽

Economic Feasibility ◽

Mineral Carbonation ◽

Agitation Rate ◽

Carbonation Reaction ◽

Carbonation Process ◽

The Cost ◽

Cow Bone

Carbon dioxide has been identified as one of the greenhouse gases responsible for global warming. Several carbon capture and storage technologies have been developed to mitigate the large quantities of carbon dioxide released into the atmosphere, but these are quite expensive and not easy to implement. Thus, this research analyses the technical and economic feasibility of using calcium leached from cow bone to capture and store carbon dioxide through the mineral carbonation process. The capturing process of carbon dioxide was successful using the proposed technique of leaching calcium from cow shinbone (the tibia) in the presence of HCl by reacting the calcium solution with gaseous carbon dioxide. AAS and XRF analysis were used to determine the concentration of calcium in leached solutions and the composition of calcium in cow bone respectively. The best leaching conditions were found to be 4 mole/L HCl and leaching time of 6 h. Under these conditions, a leaching efficiency of 91% and a calcium conversion of 83% in the carbonation reaction were obtained. Other factors such as carbonation time, agitation rate, and carbonation reaction temperature had little effect on the yield. A preliminary cost analysis showed that the cost to capture 1 ton of CO2 with the proposed technique is about US$ 268.32, which is in the acceptable range of the capturing process. However, the cost of material used and electricity should be reviewed to reduce the preliminary production cost.

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New fractionation process for citrus oil by pressure swing adsorption in supercritical carbon dioxide

Chemical Engineering Science ◽

10.1016/s0009-2509(98)00212-7 ◽

1998 ◽

Vol 53 (24) ◽

pp. 4095-4104 ◽

Cited By ~ 20

Author(s):

Masaki Sato ◽

Motonobu Goto ◽

Akio Kodama ◽

Tsutomu Hirose

Keyword(s):

Carbon Dioxide ◽

Supercritical Carbon Dioxide ◽

Pressure Swing Adsorption ◽

Fractionation Process ◽

Pressure Swing ◽

Supercritical Carbon

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Thermodynamic exploration of two-stage vacuum-pressure swing adsorption for carbon dioxide capture

Energy ◽

10.1016/j.energy.2021.122901 ◽

2021 ◽

pp. 122901

Author(s):

W. Liu ◽

Y.C. Lin ◽

L. Jiang ◽

Y. Ji ◽

J.Y. Yong ◽

...

Keyword(s):

Carbon Dioxide ◽

Pressure Swing Adsorption ◽

Carbon Dioxide Capture ◽

Vacuum Pressure ◽

Two Stage ◽

Vacuum Pressure Swing Adsorption ◽

Pressure Swing

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Numerical Simulation of Microscopic Formation of Carbon Dioxide Hydrate in Two-Phase Flow

10.1115/omae2021-62567 ◽

2021 ◽

Author(s):

Alan Junji Yamaguchi ◽

Kaito Kobayashi ◽

Toru Sato ◽

Takaomi Tobase

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Two Phase Flow ◽

Pore Space ◽

Carbon Capture And Storage ◽

Hydrate Formation ◽

Field Method ◽

Phase Field Method ◽

Phase Flow ◽

Two Phase

Abstract The global warming is an important environmental concern and the carbon capture and storage (CCS) emerges as a very promising technology. Captured carbon dioxide (CO2) can be stored onshore or offshore in the aquifers. There is, however, a risk that stored CO2 will leak due to natural disasters. One possible solution to this is the natural formation of CO2 hydrates. Gas hydrate has an ice-like structure in which small gas molecules are trapped within cages of water molecules. Hydrate formation occurs under high pressure and low temperature conditions. Its stability under these conditions acts like a cap rock to prevent CO2 leaks. The main objective of this study is to understand how hydrate formation affects the permeability of leaked CO2 flows. The phase field method was used to simulate microscopic hydrate growth within the pore space of sand grains, while the lattice Boltzmann method was used to simulate two-phase flow. The results showed that the hydrate morphology within the pore space changes with the flow, and the permeability is significantly reduced as compared with the case without the flow.

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Study on Dispersion of Carbon Dioxide over the Shrubbery Region

Frontiers in Energy Research ◽

10.3389/fenrg.2021.695224 ◽

2021 ◽

Vol 9 ◽

Author(s):

Wang Huiru ◽

You Zhanping ◽

Mo Fan ◽

Liu Bin ◽

Han Peng

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Carbon Capture And Storage ◽

Dispersion Pattern ◽

Buried Pipeline ◽

Dynamic Impact ◽

Coverage Area ◽

Computational Fluid Dynamics Cfd ◽

And Storage ◽

Terrain Features

In the carbon capture and storage (CCS) infrastructure, the risk of a high-pressure buried pipeline rupture possibly leads to catastrophic accidents due to the release of tremendous amounts of carbon dioxide (CO2). Therefore, a comprehensive understanding of the effects of CO2 dispersion pattern after release from CCS facilities is essential to allow the appropriate safety precautions to be taken. Due to variations in topography above the pipeline, the pattern of CO2 dispersion tends to be affected by the real terrain features, such as trees and hills. However, in most previous studies, the dynamic impact of trees on the wind field was often approximated to linear treatment or even ignored. In this article, a computational fluid dynamics (CFD) model was proposed to predict CO2 dispersion over shrubbery areas. The shrubs were regarded as a kind of porous media, and the model was validated against the results from experiment. It was found that shrubbery affected the flow field near the ground, enhancing the lateral dispersion of CO2. Compared with that of the shrub-free terrain, the coverage area of the three shrub terrains at 60 s increased by 8.1 times, 6.7 times, and 9.1 times, respectively. The influence of shrub height and porosity on CO2 dispersion is nonlinear. This research provides reliable data for the risk assessment of CCS.

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