Adsorption Kinetic Characteristics of H₂S on Activated Carbon

Authors: Chiang H-L.¹; Tsai J-H.²; Chang G-M.²; Hsu Y-C.³

Source: Adsorption, Volume 8, Number 4, December 2002 , pp. 325-340(16)

Publisher: Springer

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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, delta < 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 ( psi ). 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.

Language: English

Document Type: Research article

Affiliations: 1: Department of Environmental Engineering, Fooyin Institute of Technology, Kaoshsiung, Taiwan 2: Graduate Institute of Environmental Engineering, National Cheng Kung University, Tainan, Taiwan 3: Department of Environmental Engineering and Health, Tajen Junior College of Pharmacy, En-Pu Hsiang, Pingtung Hsien, Taiwan