A Review of CO2 Capture by Absorption and Adsorption

Yu, Cheng-Hsiu; Huang, Chih‐Hung; Tan, Chung‐Sung

doi:10.4209/aaqr.2012.05.0132

Cited by 1,419 publications

(942 citation statements)

References 203 publications

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“…Thus, the kinetics of adsorption and desorption controls the cycle time and the amount of adsorbent required in the adsorption system. The faster an adsorbent can adsorb/desorbed CO 2 , the less amount of adsorbent will be needed to capture a given volume of CO 2 (Samanta et al 2011;Yu et al 2012). It has been reported that the overall kinetics of CO 2 adsorption is influenced by functional groups present, as well as the pore size and distribution in the support.…”

Section: Adsorptionmentioning

confidence: 99%

“…If an appropriate sorbent and proper operation conditions are chosen, continuous removal of CO 2 up to 80 % can be achieved with ease under favorable economics Park et al 2006a, b). Various metal oxides such as Na-, K-and Libased materials are considered to be efficient for the CO 2 adsorption operation, but the seriousness of diffusion resistance has hindered their commercial consumption (Iwan et al 2009;Yu et al 2012). The attrition or abrasion resistance affects the CO 2 capture.…”

Section: Dry Alkali Metal-based Sorbentsmentioning

confidence: 99%

“…In a water-gas shift reaction (WGSR), steam is added to the syngas converting CO to hydrogen and CO 2 . After physical wash, CO 2 is separated and dehydrated from the gas stream leaving H 2 behind, which is a clean source of energy (Jin and Zhang 2011;Yu et al 2012). Oxy-fuel technology burns fuel and pure oxygen instead of ambient air.…”

Section: Co 2 Capture Technologiesmentioning

confidence: 99%

“…Therefore, it is not necessary that the CO 2 adsorption will increase with the increase of surface area (Maroto-Valer et al 2005;Reddy et al 2015). The other approach is to form structures of single-walled carbon nanotubes (CNTs), multi-walled CNTs, graphenes, ordered mesoporous carbon, microporous carbon (Yu et al 2012). In Table 1, different reagents and their general effects on CO 2 adsorption in carbonaceous material-based adsorbents are summarized.…”

Section: Carbonaceous Materials-based Adsorbentsmentioning

confidence: 99%

See 3 more Smart Citations

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Younas

Sohail

Leong

et al. 2016

Int. J. Environ. Sci. Technol.

192

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In the last few decades of industrialization, the concentration of CO 2 in the atmosphere had increased rapidly. Different organizations have invested considerable funds in research activities worldwide for CO 2 capture and storage. To date, significant work has been done and various technologies have been proposed for CO 2 capture and storage. Both adsorption and absorption are promising techniques for CO 2 capture, but low-temperature adsorption processes using solid adsorbents are the prevailing technique nowadays. In this review paper, a variety of adsorbents such as carbonaceous materials, dry alkali metal-based sorbents, zeolites, metal-organic frameworks (MOFs) and microporous organic polymers (MOPs) have been studied. Various methods of chemical or physical modification and the effects of supporting materials have been discussed to enhance CO 2 capture capacity of these adsorbents. Low-temperature (\100°C) adsorption processes for CO 2 capture are critically analyzed and concluded on the basis of information available so far in the literature. All the information in CO 2 adsorption using different routes has been discussed, summarized and thoroughly presented in this review article. The most important comparative study of relatively new material MOFs and MOPs is carried out between the groups and with other sorbent as well.

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Section: Adsorptionmentioning

confidence: 99%

Section: Dry Alkali Metal-based Sorbentsmentioning

confidence: 99%

Section: Co 2 Capture Technologiesmentioning

confidence: 99%

Section: Carbonaceous Materials-based Adsorbentsmentioning

confidence: 99%

See 2 more Smart Citations

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Younas

Sohail

Leong

et al. 2016

Int. J. Environ. Sci. Technol.

192

View full text Add to dashboard Cite

show abstract

“…[28] A comparison of CO 2 absorption performance of PEI-GO and three different kinds of PEI-impregnated mesoporous silica substrates [29] is given in Table 3. The absorption capacity of PEI-GO is comparable to that of KIT-6-PEI at 25 C. …”

Section: Pei-gomentioning

confidence: 99%

Polyethyleneimine functionalised nanocarbons for the efficient adsorption ofcarbon dioxide with a low temperature of regeneration

Dillon

Andreoli

Cullum

et al. 2014

Journal of Experimental Nanoscience

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Polyethyleneimine (PEI) conjugates with a range of nanocarbons (NCs) have been prepared, and their performances with regard to carbon dioxide absorption and liberation are compared. PEI-functionalised multi-walled carbon nanotubes (PEI-MWNTs) prepared by the reaction of branched PEI (25,000 Da) with F-MWNTs in the presence of pyridine, showed a lower CO 2 capacity at 25 C (5 wt%, 1.1 mmol CO 2 /g adsorbent) as compared to PEI-SWNTs (9.2 wt%, 2.1 mmol CO 2 /g adsorbent), consistent with the interior layers of the MWNTs adding weight to the base NC without adding functionality. PEI-functionalised graphite/graphene was prepared by three routes: fluorinated graphite intercalation compounds, prepared from natural graphite powder, were reacted with PEI in EtOH with pyridine; exfoliated natural graphite powder was reacted with Boc-Phe(4-N 3 )-OH, and subsequently PEI to give PEI-Phe(4-N-G); graphite oxide (GO) was reacted with PEI in the presence of NEt 3 to give PEI-GO. The CO 2 capacity of PEI-GO at 25 C (8 wt%, 1.8 mmol CO 2 /g adsorbent) was comparable to that of PEI-SWNTs making GO a valid and cheaper alternative to the SWNT scaffold. The temperature of CO 2 desorption of the PEINCs was 75 C, providing a lower energy load for regeneration compared to current amine-based scrubbing units. The rate of CO 2 uptake is seen to depend on the curvature of the NC substrate.

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Absorption

Karayiannis

Laso

2018

Kirk-Othmer Encyclopedia of Chemical Technology

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Absorption, or gas absorption, is a unit operation used in the chemical industry to separate gases by washing or scrubbing a gas mixture with a suitable liquid. One or more of the gas components dissolves or is absorbed in the liquid and is thus removed from the mixture. Absorption is currently one of the most important processes in chemical engineering not only for product recovery but also, and perhaps mainly, for pollutant removal. Intense industrial and academic effort is focused on optimizing the process, in terms process efficiency as well as commercial aspects. In this article, the fundamental principles of gas solubility and mass transfer, design and operation of industrial equipment with relevant examples of typical commercial gas absorption processes are discussed, including recent developments in these areas.

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A Review of CO2 Capture by Absorption and Adsorption

Cited by 1,419 publications

References 203 publications

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Feasibility of CO2 adsorption by solid adsorbents: a review on low-temperature systems

Polyethyleneimine functionalised nanocarbons for the efficient adsorption ofcarbon dioxide with a low temperature of regeneration

Absorption

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