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Removal of H2S from Exhaust Gas by Use of Alkaline Activated Carbon |
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| Authors: | Jiun-Horng Tsai Fu-Teng Jeng Hung-Lung Chiang |
| Institution: | (1) Department of Environmental Engineering, National Cheng Kung University, Tainan, Taiwan, Republic of China;(2) Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan, Republic of China;(3) Department of Environmental Engineering, Fooyin Institute of Technology, Kaoshiung Hsien, Taiwan, Republic of China |
| Abstract: | The purpose of this research was to select an activated carbon and alkaline solution blend that generated the best H2S adsorption on alkaline-activated carbon. RB2 (activated carbon) impregnated with NaOH solution was shown to have the optimum H2S removal efficiency. The optimum NaOH concentration was 50 mg per gram of carbon. H2S adsorption via RB2-NaOH50 was five times that of a corresponding fresh-activated carbon. The adsorption equivalent of H2S is nearly 1 (mol-H2S/mol-AOH), therefore, H2S + AOH  AHS + H2O was the major reaction. The H2S adsorption isotherm corresponded to the Freundlich isotherm. |
| Keywords: | hydrogen sulfide adsorption capacity alkaline activated carbon length of unused bed adsorption wave |
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