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Simultaneous removal of SO2 and PAHs by adding calcium-based additives during sewage sludge incineration in a fluidized bed incinerator

  • SPECIAL FEATURE: ORIGINAL ARTICLE
  • 3rd 3R International Scientific Conference (3rd 3RINCs 2016)
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Abstract

In this paper, the simultaneous removal of sulfur dioxide (SO2) and polycyclic aromatic hydrocarbons (PAHs) by adding calcium-based additives [CaO, Ca(OH)2, and CaCO3] during sewage sludge incineration was investigated in a fluidized bed incinerator. The effects of the types, CaO/S (mole ratio) and particle size of calcium-based additives on PAHs or PAHs Toxic Equivalent Quantity concentrations (TEQs) were also considered. The experimental results indicated that CaO had a better performance of reducing SO2 and PAHs emission, and the removal efficiencies of SO2, PAHs and PAHs TEQs at 850 °C were 86.89, 38.88 and 75.19%, respectively. Meanwhile, the increase of CaO/S and decrease of particle size were beneficial for suppressing PAHs formation and capturing SO2. Moreover, the adsorption and catalytic effect of calcium-based additives were regarded as inhibiting PAHs formation.

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Acknowledgements

The present work is supported by National Natural Science Foundation of China (Grant No. 51576146), The Key fundamental Research Project from Shenzhen Research Council (JCYJ20150630155150193), and Natural Science Foundation of Hubei Province (2014CFA030).

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Authors and Affiliations

  1. College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan, 430081, Hubei, People’s Republic of China

    Lin-Bo Qin, Jun Han, Wang-Sheng Chen & Ge-Ge Wang

  2. State Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, People’s Republic of China

    Guang-Qian Luo & Hong Yao

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  1. Lin-Bo Qin
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  2. Jun Han
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  3. Wang-Sheng Chen
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  4. Ge-Ge Wang
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  5. Guang-Qian Luo
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  6. Hong Yao
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Correspondence to Jun Han.

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Qin, LB., Han, J., Chen, WS. et al. Simultaneous removal of SO2 and PAHs by adding calcium-based additives during sewage sludge incineration in a fluidized bed incinerator. J Mater Cycles Waste Manag 19, 1061–1068 (2017). https://doi.org/10.1007/s10163-017-0592-6

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  • DOI: https://doi.org/10.1007/s10163-017-0592-6

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