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Application Study on the Activated Coke for Mercury Adsorption in the Nonferrous Smelting Industry

Author

Listed:
  • Yang Zheng

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing 100083, China)

  • Guoliang Li

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing 100083, China)

  • Jiayan Jiang

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Lin Zhang

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Tao Yue

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing 100083, China)

Abstract

The massive release of mercury undermines environmental sustainability, and with the official entry into force of the Minamata Convention, it is urgent to strengthen the control of mercury pollution. The effectiveness of activated coke (AC) in removing elemental mercury (Hg 0 ) from high temperatures and sulfur nonferrous smelting flue gas before acid production was studied. Experimental results indicated that the optimal temperature for Hg 0 adsorption by AC was 150 °C. And the adsorption of Hg 0 by AC was predominantly attributed to physical adsorption. Flue gas components (SO 2 and O 2 ) impact studies indicated that O 2 did not significantly affect Hg 0 adsorption compared to pure N 2 . Conversely, SO 2 suppressed the adsorption capacity, while the simultaneous presence of SO 2 and O 2 exhibited a synergistic effect in facilitating the removal of Hg 0 . The characterization results of X-ray photoelectron spectroscopy (XPS) indicated that the SO 2 molecule favored to anchor at the O α site, leading to the formation of SO 3 . This subsequently oxidized the mercury to HgSO 4 instead of HgO. The study demonstrates that cheap and easily accessible AC applications in the adsorption of mercury technology may help improve the sustainability of the circular economy and positively impact various environmental aspects.

Suggested Citation

  • Yang Zheng & Guoliang Li & Jiayan Jiang & Lin Zhang & Tao Yue, 2024. "Application Study on the Activated Coke for Mercury Adsorption in the Nonferrous Smelting Industry," Sustainability, MDPI, vol. 16(1), pages 1-15, January.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:1:p:421-:d:1312648
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    References listed on IDEAS

    as
    1. Yuxuan Zhou & Shugang Li & Yang Bai & Hang Long & Yuchu Cai & Jingfei Zhang, 2023. "Joint Characterization and Fractal Laws of Pore Structure in Low-Rank Coal," Sustainability, MDPI, vol. 15(12), pages 1-19, June.
    2. Joo Chan Lee & Se-Won Park & Hyun Sub Kim & Tanvir Alam & Sang Yeop Lee, 2023. "Oxidation Enhancement of Gaseous Elemental Mercury Using Waste Steel Slag under Various Experimental Conditions," Sustainability, MDPI, vol. 15(2), pages 1-11, January.
    3. Łuszkiewicz, Dariusz & Jędrusik, Maria & Świerczok, Arkadiusz & Kobylańska-Pawlisz, Mariola, 2023. "Effect of addition of sulphide based additive to WFGD slurry on mercury removal from flue gas," Energy, Elsevier, vol. 270(C).
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