Adsorption kinetic characteristics of H2S on activated carbon

Hung Lung Chiang; Jiun Horng Tsai; Gen Mu Chang; Yi Chun Hsu

doi:10.1023/A:1021537530695

Adsorption kinetic characteristics of H₂S on activated carbon

Hung Lung Chiang, Jiun Horng Tsai, Gen Mu Chang, Yi Chun Hsu

Department of Environmental Engineering

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

14 Citations (Scopus)

Abstract

This study compared H₂S adsorption kinetic parameters in both grain adsorption and column adsorption systems. Results indicated that when the nondimensional mass transfer parameter for adsorption column design was included, the axial dispersion (Pe > 1, δ < 1) and external film resistance (B ≫ 1) could be neglected, the fluid viscosity effect was small (Sc = 0.76), and the adsorbate affinity was fine (Ψ). Surface and pore diffusion controlled the adsorbent and fluid mass transfer. In addition, spent activated carbon could be treated by a thermal process and then impregnated with NaOH. After the pretreatment, the spent activated carbon could be used for H₂S adsorption. Furthermore, we also propose that the H₂S adsorption reaction on the carbon is due to the formation of sulfur crystals.

Original language	English
Pages (from-to)	325-340
Number of pages	16
Journal	Adsorption
Volume	8
Issue number	4
DOIs	https://doi.org/10.1023/A:1021537530695
Publication status	Published - 2002 Dec

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Surfaces and Interfaces

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title = "Adsorption kinetic characteristics of H2S on activated carbon",

abstract = "This study compared H2S adsorption kinetic parameters in both grain adsorption and column adsorption systems. Results indicated that when the nondimensional mass transfer parameter for adsorption column design was included, the axial dispersion (Pe > 1, δ < 1) and external film resistance (B ≫ 1) could be neglected, the fluid viscosity effect was small (Sc = 0.76), and the adsorbate affinity was fine (Ψ). Surface and pore diffusion controlled the adsorbent and fluid mass transfer. In addition, spent activated carbon could be treated by a thermal process and then impregnated with NaOH. After the pretreatment, the spent activated carbon could be used for H2S adsorption. Furthermore, we also propose that the H2S adsorption reaction on the carbon is due to the formation of sulfur crystals.",

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T1 - Adsorption kinetic characteristics of H2S on activated carbon

AU - Chiang, Hung Lung

AU - Tsai, Jiun Horng

AU - Chang, Gen Mu

AU - Hsu, Yi Chun

PY - 2002/12

Y1 - 2002/12

N2 - This study compared H2S adsorption kinetic parameters in both grain adsorption and column adsorption systems. Results indicated that when the nondimensional mass transfer parameter for adsorption column design was included, the axial dispersion (Pe > 1, δ < 1) and external film resistance (B ≫ 1) could be neglected, the fluid viscosity effect was small (Sc = 0.76), and the adsorbate affinity was fine (Ψ). Surface and pore diffusion controlled the adsorbent and fluid mass transfer. In addition, spent activated carbon could be treated by a thermal process and then impregnated with NaOH. After the pretreatment, the spent activated carbon could be used for H2S adsorption. Furthermore, we also propose that the H2S adsorption reaction on the carbon is due to the formation of sulfur crystals.

AB - This study compared H2S adsorption kinetic parameters in both grain adsorption and column adsorption systems. Results indicated that when the nondimensional mass transfer parameter for adsorption column design was included, the axial dispersion (Pe > 1, δ < 1) and external film resistance (B ≫ 1) could be neglected, the fluid viscosity effect was small (Sc = 0.76), and the adsorbate affinity was fine (Ψ). Surface and pore diffusion controlled the adsorbent and fluid mass transfer. In addition, spent activated carbon could be treated by a thermal process and then impregnated with NaOH. After the pretreatment, the spent activated carbon could be used for H2S adsorption. Furthermore, we also propose that the H2S adsorption reaction on the carbon is due to the formation of sulfur crystals.

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JO - Adsorption

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Adsorption kinetic characteristics of H₂S on activated carbon

Abstract

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