Enhanced CO2 capture by biomass-templated Ca(OH)2-based pellets

Ridha, Firas N.; Wu, Yinghai; Manović, Vasilije; Macchi, Arturo; Anthony, Edward J.

doi:10.1016/j.cej.2015.03.041

Cited by 91 publications

(74 citation statements)

References 41 publications

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“…CO 2 capture and sequestration is a promising way to control the CO 2 emissions in order to battle the climate and environment challenges [1][2][3][4][5][6]. Among available techniques, amine scrubbing is the current state-of-the-art technology for CO 2 capture on an industrial scale.…”

Section: Introductionmentioning

confidence: 99%

Dynamic capture of low-concentration CO2 on amine hybrid silsesquioxane aerogel

Kong

Shen

Fan

et al. 2016

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Dynamic capture of low-concentration CO2 on amine hybrid silsesquioxane aerogel

Kong

Shen

Fan

et al. 2016

Chemical Engineering Journal

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“…That said, pelletization would offer a method of re-using spent lime [46], if lime were not easily available in a given location, or the attrition resistance of a particular limestone was very poor. In addition, it offers the potential ability to use cheap additives which TGA tests have suggested are particularly effective in producing extremely reactive sorbents [47,48]. However, such tests must be done at the pilot plant level under realistic fluidizing velocities and temperatures if they are to provide the evidence that these approaches represent an advantage over using untreated lime-based sorbents and this represents the next goal of our research.…”

Section: Figure 5 Mass Loss During the 20 Cycle Fluidized Bed Experimmentioning

confidence: 99%

CO2 capture by calcium aluminate pellets in a small fluidized bed

Blamey

Al-Jeboori

Manović

et al. 2016

Fuel Processing Technology

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Synthetic pellets made using calcium aluminate cement and quicklime have been examined in a small fluidized bed reactor to determine their performance in cyclic CO2 capture for up to 20 calcination/capture cycles. Two batches were examined one a "fresh" batch, and the second an "aged" batch of pellets and their performance was compared with the original parent limestone. Carbonation was carried out at 650 ˚C and calcination at 900 ˚C, both with 15 % CO2, balance N2, as a synthetic flue gas.Experiments were also performed with and without steam in the flue gas and showed that steam always improved capture performance. In addition, there was no major attrition associated with the pellets, and pellets tended to perform better in terms of carbon capture than the parent limestone.

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“…During the first few minutes, when CO2 is absorbed by CaO at 650 °C, a zero CO2 signal is observed in the outlet mixture. Here, two regions can be seen: (i) fast absorption as the result of the reaction of CaO with CO2 and then (ii) slower absorption hindered by the CO2 diffusion through the CaCO3 layer on the surface of CaO [8,38]. Close to the total CO2 capacity of the sorbent, the outlet CO2 concentration starts to increase and finally levels off at the value corresponding to its inlet concentration.…”

Section: Temperature Profilesmentioning

confidence: 99%

Performance of novel CaO-based sorbents in high temperature CO 2 capture under RF heating

Sotenko

Fernández

et al. 2017

Chemical Engineering and Processing: Process Intensification

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ReuseThis article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND) licence. This licence only allows you to download this work and share it with others as long as you credit the authors, but you can't change the article in any way or use it commercially. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. AbstractThe problem of CO2 mitigation on a small and medium scale can be resolved by developing a combined system of CO2 capture and its consecutive conversion into valuable products. The first stage of CO2 looping, however, should be reliable, effective and easy to control and radiofrequency heating, as a new advanced technology, can be used to improve the process.CO2 absorption and desorption RF units can be installed within power plants and powered during the periods of low energy demand thus stabilizing the electrical grid. In this work, aCaO sorbent produced by template synthesis was studied as a sorbent for a CO2 looping system under RF heating which offers short start-up times, highly controlled operation, high degree of robustness and low price. The sorbent reached its stable CO2 capacity of 15.4 wt.% already after 10 temperature cycles (650/850 o C) under RF heating. Higher CO2 desorption rate and lower degree of the sorbent sintering was observed under RF heating as compared to conventional heating.2

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Enhanced CO2 capture by biomass-templated Ca(OH)2-based pellets

Cited by 91 publications

References 41 publications

Dynamic capture of low-concentration CO2 on amine hybrid silsesquioxane aerogel

Dynamic capture of low-concentration CO2 on amine hybrid silsesquioxane aerogel

CO2 capture by calcium aluminate pellets in a small fluidized bed

Performance of novel CaO-based sorbents in high temperature CO 2 capture under RF heating

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