Carbon dioxide adsorption on polyacrylamide-impregnated silica gel and breakthrough modeling

Zhao, Yi; Yan-mei, Shen; Bai, Lu; Ni, Shiqing

doi:10.1016/j.apsusc.2012.08.085

Cited by 47 publications

(39 citation statements)

References 23 publications

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“…For instance, the CO 2 heat of adsorption on zeolite is substantial enough to cause the rise of adsorption temperature as much as 50°C. Thus, it has been reported that the CO 2 heat of adsorption on zeolite is *10 times higher than that on activated carbon at the same temperature and pressure (Radosz et al 2008;Zhao et al 2012). Some of the studies revealed the same isosteric heat of CO 2 adsorption for MOPs and activated carbons, reflecting the structural similarities between the two adsorbent materials.…”

Section: Heat Of Co 2 Adsorption Of the Adsorbentsmentioning

confidence: 81%

“…Zeolites adsorption capacity increases with a slight increase in adsorption temperature because of the pores opening, but the adsorption capacity drops down beyond 100°C. Generally, for MOFs, MOPs, Zhao et al (2012) zeolites and carbonaceous material-based adsorbents, the CO 2 adsorption temperature is up to 70°C that is lower than the real flue gases temperature (normally 90°C). Consequently, using these adsorbents in industries for CO 2 capture is needed to cool down the flue gases or modify these adsorbents for high-temperature adsorption.…”

Section: Resultsmentioning

confidence: 99%

“…From quantification of the CO 2 isosteric heat of adsorption, the nature of the CO 2 adsorption can be determined, where low heat of adsorption (8-41 kJ mol -1 ) revealed physisorption and higher value of heat of adsorption (62-418 kJ mol -1 ) indicated chemisorption. Furthermore, this parameter showed that the CO 2 interaction with the adsorbent material might be mainly an intermolecular force or hydrogen bond (Ho et al 2014;Zhao et al 2012).…”

Section: Heat Of Co 2 Adsorption Of the 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.

203

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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: Heat Of Co 2 Adsorption Of the Adsorbentsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Section: Heat Of Co 2 Adsorption Of the Adsorbentsmentioning

confidence: 99%

See 1 more Smart Citation

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

Younas

Sohail

Leong

et al. 2016

Int. J. Environ. Sci. Technol.

203

View full text Add to dashboard Cite

show abstract

“…Apart from these kinds of solid adsorbents, porous materials functionalized with organic amines were found promising for CO 2 adsorption . For instance, polyethyleneimine (PEI) modified pore‐expanded SBA‐15 (PE‐SBA‐15(17e)‐PEI) shows a CO 2 adsorption capacity of 3.13 mmol g −1 at 45 °C and 1 bar, 11.8 times that of the silica support .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of amine-modified solid Fe-Zr adsorbents for CO₂adsorption

Yang

Liu

Chen

et al. 2015

J. Chem. Technol. Biotechnol.

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BACKGROUND With the aggravation of the greenhouse effect, much attention is given to the capture of CO2 before its emission into the atmosphere. So far, various solid adsorbents have been developed and used. Among them, solid materials modified with organic‐amines are promising on account of good adsorption and desorption performance. In the present work, triethylenetetramine (TETA) modified solid Fe‐Zr adsorbents were synthesized and characterized. The performance of the adsorbents for CO2 adsorption was tested in a stream of 5% CO2. RESULTS The Fe‐Zr support was first synthesized, and TETA was successfully grafted onto its surface. The adsorbents show good thermal stability and CO2 adsorption ability. Increase in the amount of TETA and increased gas flow rate have a positive influence whereas increase of the adsorption temperature has a negative effect on CO2 adsorption capacity. At 200 mg TETA loading and a flow rate of 20 cm3 g−1, the adsorbent achieves a maximum adsorption capacity of 4.1 mmol g−1 at 75 °C. In addition, the adsorbent exhibits excellent reusability and cyclic performance. CONCLUSION Remarkable adsorption capacity and good recyclability suggest that synthesized TETA‐functionalized Fe‐Zr adsorbents have high potential for CO2 capture in industry. © 2015 Society of Chemical Industry

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“…Currently, a variety of mathematical models have been used to describe and predict the breakthrough curves of a column adsorption system in liquid or gaseous phase (Abu-Lail et al, 2012;Cheknane et al, 2012;Meng et al, 2012;Nwabanne and Igbokwe, 2012;Yi et al, 2012;Zhao et al, 2012), but there is still lack of a comprehensive review of these models. The main objective of the present review is to introduce the modeling of dynamic adsorption in liquid phase.…”

Section: Introductionmentioning

confidence: 99%

Mathematically modeling fixed-bed adsorption in aqueous systems

Cai

Pan

2013

J. Zhejiang Univ. Sci. A

345

166

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Adsorption is one of the widely used processes in the chemical industry environmental application. As compared to mathematical models proposed to describe batch adsorption in terms of isotherm and kinetic behavior, insufficient models are available to describe and predict fixed-bed or column adsorption, though the latter one is the main option in practical application. The present review first provides a brief summary on basic concepts and mathematic models to describe the mass transfer and isotherm behavior of batch adsorption, which dominate the column adsorption behavior in nature. Afterwards, the widely used models developed to predict the breakthrough curve, i.e., the general rate models, linear driving force (LDF) model, wave propagation theory model, constant pattern model, Clark model, Thomas model, Bohart-Adams model, Yoon-Nelson model, Wang model, Wolborska model, and modified dose-response model, are briefly introduced from the mechanism and mathematical viewpoint. Their basic characteristics, including the advantages and inherit shortcomings, are also discussed. This review could help those interested in column adsorption to reasonably choose or develop an accurate and convenient model for their study and practical application.

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Carbon dioxide adsorption on polyacrylamide-impregnated silica gel and breakthrough modeling

Cited by 47 publications

References 23 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

Synthesis of amine-modified solid Fe-Zr adsorbents for CO₂adsorption

Mathematically modeling fixed-bed adsorption in aqueous systems

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Carbon dioxide adsorption on polyacrylamide-impregnated silica gel and breakthrough modeling

Cited by 47 publications

References 23 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

Synthesis of amine-modified solid Fe-Zr adsorbents for CO2adsorption

Mathematically modeling fixed-bed adsorption in aqueous systems

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Product

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Synthesis of amine-modified solid Fe-Zr adsorbents for CO₂adsorption