Adsorption Kinetic Characteristics of H2S on Activated Carbon |
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| Authors: | Hung-Lung Chiang Jiun-Horng Tsai Gen-Mu Chang Yi-Chun Hsu |
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| Institution: | (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 |
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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,  < 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 ( ). 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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