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

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

doi:10.1016/S0045-6535(99)00547-0

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

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

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

42 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 language	English
Pages (from-to)	1227-1232
Number of pages	6
Journal	Chemosphere
Volume	41
Issue number	8
DOIs	https://doi.org/10.1016/S0045-6535(99)00547-0
Publication status	Published - 2000 Oct

All Science Journal Classification (ASJC) codes

Environmental Engineering
General Chemistry
Environmental Chemistry
Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

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10.1016/S0045-6535(99)00547-0

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title = "Diffusion of hydrogen sulfide and methyl mercaptan onto microporous alkaline activated carbon",

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.",

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T1 - Diffusion of hydrogen sulfide and methyl mercaptan onto microporous alkaline activated carbon

AU - Chiang, Hung Lung

AU - Tsai, Jiun Horng

AU - Chang, Dai Huang

AU - Jeng, Fu Teng

PY - 2000/10

Y1 - 2000/10

N2 - 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.

AB - 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.

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

Abstract

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