Disposal of low concentration fume with solid waste modified by microwave |
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| Authors: | Zhijun He Yonglong Jin Junhong Zhang Jihui Liu Zhigang Guan |
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| Affiliation: | 1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China;2. Tangshan Iron and Steel Group Co., Ltd., Tangshan 063016, China;1. School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin 300401, PR China;2. Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Heverlee, Belgium;1. College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China;2. Center for Membrane and Water Science & Technology, Zhejiang University of Technology, Hangzhou, 310014, China;3. Department of Organic Membrane, Jiuwu Hi-Tech Company, Nanjing, 211808, China;4. Qdbeson Environmental Engineering Company, Qingdao, 266107, China |
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| Abstract: | The feasibilities of two solid waste, smelting slag and fly ash, as desulfurization and denitrogenation absorbents and additives by microwave were investigated. The influences of operating parameters were also studied. Under the optimal operating conditions, the removal efficiencies of 65.9% and 65.0% were achieved for S02 and NOx respectively. Scanning Electron Microscope and energy dispersive spectroscopy were employed to study the micro-area characteristics of fly ash, smelting slag absorbent and the spent absorbent. In addition, the mechanisms of simultaneous removal of S02 and NOx were investigated. The microwave-modified absorbent in fact played the role of solid catalyst in the process of S02 and NOx treatment from fume. S02 and NOx were oxidized because of microwave-modified absorbent catalytic effect. |
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