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Acid treatment enhances performance of beads activated carbon for formaldehyde removal

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(2), pp.397-408
  • DOI : 10.1007/s42823-022-00428-5
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 16, 2022
  • Accepted : October 20, 2022
  • Published : March 1, 2023

Kang Yu-Jin 1 Jo Hyung-Kun 1 Jang Min-Hyeok 1 Han Gyoung-Jae 1 Yoon Seong-Jin 1 Oh Kyeongseok 2 Park Joo-Il 1

1Hanbat National University
2Inha Technical College

Accredited

ABSTRACT

This study evaluated how acid treatment affects the ability of customized beads of activated carbon (BAC) to remove formaldehyde from air. Two different acids (hydrofluoric acid and sulfuric acid) were used to modify the surface of BAC prepared from a polymer material. The acid-modified BACs were further subjected to heat treatment. Physical and chemical characteristics of modified and unmodified BACs were investigated using nitrogen adsorption, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray fluorescence, and X-ray photoelectron spectroscopy. Formaldehyde removal was evaluated under both dry and moist conditions. From the results, acid treatment clearly improved the adsorption performance, especially under the moist condition. Qualitative and quantitative surface analyses were conducted, mainly to examine the amount of O-bonds after acid treatment and the formation of S–O or Cl–O on BAC.

Citation status

Scopus Citation Counts (4) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

* References for papers published after 2022 are currently being built.