Diffusion of hydrogen sulfide and methyl mercaptan onto microporous alkaline activated carbon

Hung Lung Chiang, Jiun-Horng Tsai, Dai Huang Chang, Fu Teng Jeng

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Activated carbon kinetic studies show that both H2S and CH3SH yielded pore diffusion coefficients from 10-6 to 10-8 cm2/s. Results indicated that pore structures could influence effective diffusivity. Under the same adsorbate concentration, CH3SH exhibited a greater effective pore diffusion coefficient than H2S. This may be attributed to the fact that CH3SH has both polar (-SH) and non-polar (CH3) functional groups and dissolves into water easier, thus providing more attraction for the activated carbon surface. In addition, the saturation vapor pressure of CH3SH is lower than that of H2S. Therefore, CH3SH is easier to adsorb onto activated carbon than H2S. (C) 2000 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)1227-1232
Number of pages6
JournalChemosphere
Volume41
Issue number8
DOIs
Publication statusPublished - 2000 Oct 1

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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