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Preparation of moso bamboo columnar activated carbon with high adsorption property via polyacrylamide@asphalt adhesives and steam activation

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(6), pp.1723-1736
  • DOI : 10.1007/s42823-024-00723-3
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : December 1, 2023
  • Accepted : March 16, 2024
  • Published : July 1, 2024

Liu Huan 1 Miao Yu 1 Tian Huayu 1 Chen Yishan 1 Wang Enfu 1 Huang Jingda 1 Zhang Wenbiao 1

1Zhejiang A&F University

Accredited

ABSTRACT

Moso bamboo, as a kind of renewable functional material, exhibits outstanding development potential. It is promising to prepare activated carbon with good mechanical strength and high specific surface area using moso bamboo as raw material. In this work, we employed a hydraulic extruder to extrude the bamboo charcoal and the adhesive to obtain the moso bamboo activated carbon, and improved the specific surface area of the columnar activated carbon through high-temperature water vapor activation. Through the catalytic role of the water vapor activation process, the formation and expansion of the pores were promoted and the internal pores were greatly increased. The obtained columnar activated carbon shows excellent mechanical strength (93%) and high specific surface area (791.54 m2/g). Polyacrylamide@asphalt is one of the most effective adhesives in the high-temperature water vapor activation. The average pore size (22.99 nm) and pore volume (0.36 cm3/g) of the prepared columnar activated carbon showed a high mesoporous ratio (83%). Based on the excellent pore structure brought by the activation process, the adsorption capacity of iodine (1135.75 mg/g), methylene blue (230 mg/g) and carbon tetrachloride (64.03 mg/g) were greatly improved. The resultant moso bamboo columnar activated carbon with high specific surface area, excellent mechanical properties, and outstanding adsorption capacity possesses a wide range of industrial applications and environmental protection potential.

Citation status

* References for papers published after 2023 are currently being built.