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Camphor leaf-derived activated carbon prepared by conventional physical activation and its water adsorption profile

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(4), pp.737-748
  • DOI : 10.1007/s42823-020-00204-3
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : May 12, 2020
  • Accepted : November 4, 2020
  • Published : August 1, 2021

Chairunnisa 1 Takata N. 1 Thu K. 1 Miyazaki T. 1 Nakabayashi K. 1 Miyawaki Jin 2

1Kyushu University
2독립연구자

Accredited

ABSTRACT

Preparation of activated carbon from biomass residue with conventional steam activation was conducted to fnd the alternative raw materials for meeting the high demand for low-cost porous material in the desiccant application. In this study, activated carbons were produced from dead camphor leaves using two-step methods at diferent preparation temperatures. The characterization results revealed that the prepared activated carbons have a surface area of 700 m2 /g, with 75% of microporosity. The water vapor sorption study reported that the water uptake of camphor leaf-based activated carbons was strongly afected by the pore properties of the materials. Moreover, from the water adsorption kinetics, it was observed that the rate constant of adsorption was varied at each relative pressure, which can be assumed that the water adsorption mechanism is diferent at each relative pressure. From these results, it was revealed that the prepared camphor leaf-based activated carbons have a promising ability to adsorb water vapor from humid air.

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