Corncob-derived activated carbon of high methane sorption capacity

Bingsi Liu*, Na Wang, Jia Liu, Chak Tong Au

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

Abstract

Activated carbon (AC) of high methane sorption capacity was fabricated from corncob which is a cheap and abundant agricultural waste. Experimental parameters such as the particle size of ground corncob, KOH/char weight ratio, temperature and time for AC activation were optimized for best sorption capacity of methane. The physical properties and amorphous chaotic structure of AC were characterized by BET, XRD and HRTEM investigations. The AC derived from corncob showed specific surface area of 3227 m2/g, pore volume of 1.829 cm3/g, and narrow pore size distribution. The results of methane sorption in the presence of water (water/carbon ratio = 1.4) revealed methane storage could be as high as 43.7 wt% methane per unit mass of dry AC at 2 °C and at a pressure less than 5.7 MPa, significantly higher than these (32 and 41.2wt%) observed on the coconut-derived AC (1800 m2/g) and ordered mesoporous carbon (1100-1200 m2/g).

Original languageEnglish
Title of host publicationAmerican Chemical Society - 238th National Meeting and Exposition, ACS 2009, Abstracts of Scientific Papers
Publication statusPublished - 2009
Event238th National Meeting and Exposition of the American Chemical Society, ACS 2009 - Washington, DC, United States
Duration: 16 Aug 200920 Aug 2009

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Conference

Conference238th National Meeting and Exposition of the American Chemical Society, ACS 2009
Country/TerritoryUnited States
CityWashington, DC
Period16/08/0920/08/09

Scopus Subject Areas

  • Chemistry(all)
  • Chemical Engineering(all)

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