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Pollutant Control by Absorption Methods

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Multi-Pollutant Control for Flue Gases

Part of the book series: Advanced Topics in Science and Technology in China ((ATSTC,volume 63))

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Abstract

Gaseous pollutants emitted from human activities, such as the use of fossil fuels, smelting ferrous/nonferrous metals, and producing and using chemicals, pose a severe threat to humans and the environment. Absorption is commonly used to reduce the emission of gaseous pollutants by absorbing harmful components of a gas stream into an absorbent. Despite mature industrial applications, further improvements to absorption technology are required. In this chapter, the principles of pollution control by absorption are introduced in detail. First, the fundamentals and key factors of SO2 absorption are discussed, including process chemistry, mass transfer, and reaction kinetics. Based on the influence of these factors, SO2 absorption enhancement methods, such as pH adjustment, desulfurization additives, and scrubber optimization, are demonstrated in the second section. In light of the urgent need for multi-pollutant control, technologies for simultaneous control of other pollutants, such as NOx and Hg, in the SO2 absorption process are introduced.

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Authors and Affiliations

  1. College of Energy Engineering, Zhejiang University, Hangzhou, Zhejiang, China

    Xiang Gao, Chenghang Zheng & Kefa Cen

  2. Graduate Institute of Environmental Engineering, Taiwan University, Taipei, Taiwan, China

    Pen-Chi Chiang

Authors
  1. Xiang Gao
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  2. Chenghang Zheng
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  3. Pen-Chi Chiang
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  4. Kefa Cen
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Correspondence to Xiang Gao .

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Gao, X., Zheng, C., Chiang, PC., Cen, K. (2021). Pollutant Control by Absorption Methods. In: Multi-Pollutant Control for Flue Gases. Advanced Topics in Science and Technology in China, vol 63. Springer, Singapore. https://doi.org/10.1007/978-981-16-1518-4_4

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  • DOI: https://doi.org/10.1007/978-981-16-1518-4_4

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-16-1516-0

  • Online ISBN: 978-981-16-1518-4

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