Porous graphitized carbon for adsorptive removal of benzene and the electrothermal regeneration

Li, Jinjun, Lu, Renjie, Dou, Baojuan, Ma, Chunyan, Hu, Qiuhong, Liang, Yan, Wu, Feng, Qiao, Shizhang and Hao, Zhengping (2012) Porous graphitized carbon for adsorptive removal of benzene and the electrothermal regeneration. Environmental Science and Technology, 46 22: 12648-12654. doi:10.1021/es303069j


Author Li, Jinjun
Lu, Renjie
Dou, Baojuan
Ma, Chunyan
Hu, Qiuhong
Liang, Yan
Wu, Feng
Qiao, Shizhang
Hao, Zhengping
Title Porous graphitized carbon for adsorptive removal of benzene and the electrothermal regeneration
Journal name Environmental Science and Technology   Check publisher's open access policy
ISSN 0013-936X
1520-5851
Publication date 2012-11
Year available 2012
Sub-type Article (original research)
DOI 10.1021/es303069j
Volume 46
Issue 22
Start page 12648
End page 12654
Total pages 7
Place of publication Washington, DC United States
Publisher American Chemical Society
Collection year 2013
Language eng
Formatted abstract
Graphitized carbons with mesoporous and macroporous structures were synthesized by a facile template-catalysis procedure using resorcinol and formaldehyde as carbon precursors and particulate hydrated metal oxides as both template and catalyst precursors. The materials were used as novel adsorbents for low-concentration benzene vapor. Furthermore, on the basis of the good electrical conductivities associated with the graphitized structures, an electrothermal desorption technique, which involved passing electric currents through the adsorbents to generate Joule heat, was employed to regenerate the saturated adsorbents and produce enriched benzene vapors. In comparison to microporous activated carbon, the porous graphitized carbons could afford a much quicker and more efficient regeneration by electrothermal desorption technique due to their enhanced conductivity and larger pore sizes. In addition, the concentration of the desorbed organics could be controlled by adjusting the applied voltages, which might be interesting for practical secondary treatment. It is promising that the joint utilization of porous graphitized carbon adsorbents and electrothermal desorption technique might develop effective and energy-saving processes for VOCs removal.
Keyword Volatile organic compounds
Mesoporous carbon
Swing adsorption
Activated carbon
Pore size
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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