A novel process for CO2/CH4 gas separation on activated carbon fibers—electric swing adsorption

Moon, Seung‐Hyun; Shim, Jae-Woon

doi:10.1016/j.jcis.2005.12.052

Cited by 90 publications

(57 citation statements)

References 11 publications

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“…In particular, porous carbons have been preferred for CO 2 adsorption due to their highly developed porosity, extended surface area, surface chemistry, and thermal stability. Previous studies have also used activated carbons, activated carbon fibers (ACF), carbon molecular sieves, and carbon nanotubes as adsorbents for CO 2 adsorption [12][13][14].…”

Section: Surface Properties Of Oxyfluorinated Acfsmentioning

confidence: 99%

Influence of oxyfluorination on activated carbon nanofibers for CO₂storage

Bai¹,

Kim²,

Im³

et al. 2011

Carbon letters

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The oxyfluorination effects of activated carbon nanofibers (OFACFs) were investigated for CO 2 storage. Electrospun CFs were prepared from a polyacrylonitrile/N,N-dimethylformamide solution via electrospinning and heat treatment. The electrospun CFs were chemically activated in order to generate the pore structure, and then oxyfluorination was used to modify the surface. The samples were labeled CF (electrospun CF), ACF (activated CF), OFACF-1 (O 2 :F 2 = 7:3), OFACF-2 (O 2 :F 2 = 5:5) and OFACF-3 (O 2 :F 2 = 3:7). The functional group of OFACFs was investigated using X-ray photoelectron spectroscopy analysis. The C-F bonds formed on surface of ACFs. The intensities of the C-O peaks increased after oxyfluorination and increased the oxygen content in the reaction gas. The specific surface area, pore volume and pore size of OFACFs were calculated by the Brunauer-Emmett-Teller and density functional theory equation. Through the N 2 adsorption isotherm, the specific surface area and pore volume slightly decreased as a result of oxyfluorination treatment. Nevertheless, the CO 2 adsorption efficiency of oxyfluorinated ACF improved around 16 wt% due to the semi-ionic interaction effect of surface modificated oxygen functional groups and CO 2 molecules.

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Section: Surface Properties Of Oxyfluorinated Acfsmentioning

confidence: 99%

Influence of oxyfluorination on activated carbon nanofibers for CO₂storage

Bai¹,

Kim²,

Im³

et al. 2011

Carbon letters

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“…Most applications of electrothermal desorption have been based on fibrous activated carbon materials (Petkovska et al 1991;Rood et al 2002;Sullivan et al 2001Sullivan et al , 2004aSullivan et al , 2004bLe Cloirec 2004, 2006;Moon and Shim 2006;Luo et al 2006), although granular activated carbons (Snyder and Leesch 2001;Sushchev et al 2002;Luo et al 2006) and, recently, carbon monoliths (Luo et al 2006;Yu et al 2002Yu et al , 2007, have also been used.…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, different applications (mostly on laboratory scale) of regeneration of used adsorbents by electrothermal desorption have been reported: air purification, with emphases on removal of hazardous volatile organic compounds (Baudu et al 1992;Azou et al 1993;Sullivan et al 2001Sullivan et al , 2003Subrenat and Le Cloirec 2006), gas separation (Moon and Shim 2006) and solvent recovery (Bathen et al 1997;Lordgooei et al 1996;Snyder and Leesch 2001;Sullivan 2003). In the last couple of years, some applications of electrothermal desorption on industrial scale have also been reported (Bathen 2002;Le Cloirec 2004, 2006).…”

Section: Introductionmentioning

confidence: 99%

Multiphysics modeling of electric-swing adsorption system with in-vessel condensation

et al. 2007

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Mathematical modeling of an Electric-Swing Adsorption (ESA) system (adsorption cycle with electrothermal desorption step, performed by direct heating of the adsorbent particles by passing electric current through them), with annular, radial-flow, cartridge-type fixed-bed and invessel condensation, is performed by using Comsol Multiphysics™ software. Three multiphysics models are built, in order to describe three stages of a compete ESA cycle: adsorption, electrothermal desorption before the start of condensation and electrothermal desorption with in-vessel condensation. In order to describe the complete ESA cycle the models for the three stages are integrated, by using a combination of Comsol Multiphysics™ and Matlab™. The models were successfully used for simulation of separate stages of the process and of the complete ESA cycles, as well as for investigation of the influences of the main operational parameters on the process performance.

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“…MDEA activated by PZ was proven as a promising solvent for CO 2 absorption and has been investigated by many researchers [9]- [13]. However, the presence of acid gases (CO 2 and H 2 S) in any alkanolamine solutions during absorption process leads to the corrosion problem.…”

mentioning

confidence: 99%

“…However, the presence of acid gases (CO 2 and H 2 S) in any alkanolamine solutions during absorption process leads to the corrosion problem. Corrosion becomes one of the serious problems in CO 2 absorption that always occurred in some plant locations such as regenerator, boiler and absorber [14], [15].…”

mentioning

confidence: 99%

Methyldiethanolamine and Piperazine as Extractant in Emulsion Liquid Membrane for Carbon Dioxide Removal

Kamarudin¹,

Dolmat²,

Najib³

2015

IJCEA

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Abstract-Emulsion liquid membrane was formulated using MDEA and piperazine as extractant in sodium hydroxide solution. Span-80 in the organic solution acts as surfactant to stabilize the formation emulsion. The effects of MDEA/PZ ratio on emulsion stability and CO 2 absorption were investigated. CO 2 absorption was carried out in rotating disc contactor (RDC) column and gas chromatography (GC) was used to determine the amount of CO 2 leaving the column. This study showed that 8% v/v Span-80 has produced a stable emulsion. The emulsion was able to remove 60.3% of CO 2 . In the presence of methane (CH4), 54.1% of CO 2 and 13.2% of CH4 were removed from CH 4 /CO 2 mixtures. The finding demonstrates the promising technique of ELM for CO 2 removal.

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A novel process for CO2/CH4 gas separation on activated carbon fibers—electric swing adsorption

Cited by 90 publications

References 11 publications

Influence of oxyfluorination on activated carbon nanofibers for CO₂storage

Influence of oxyfluorination on activated carbon nanofibers for CO₂storage

Multiphysics modeling of electric-swing adsorption system with in-vessel condensation

Methyldiethanolamine and Piperazine as Extractant in Emulsion Liquid Membrane for Carbon Dioxide Removal

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A novel process for CO2/CH4 gas separation on activated carbon fibers—electric swing adsorption

Cited by 90 publications

References 11 publications

Influence of oxyfluorination on activated carbon nanofibers for CO2storage

Influence of oxyfluorination on activated carbon nanofibers for CO2storage

Multiphysics modeling of electric-swing adsorption system with in-vessel condensation

Methyldiethanolamine and Piperazine as Extractant in Emulsion Liquid Membrane for Carbon Dioxide Removal

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Product

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Influence of oxyfluorination on activated carbon nanofibers for CO₂storage

Influence of oxyfluorination on activated carbon nanofibers for CO₂storage