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Carbon Footprint for Mercury Capture from Coal-Fired Boiler Flue Gas

Author

Listed:
  • Magdalena Gazda-Grzywacz

    (Faculty of Energy & Fuels, AGH University of Science and Technology, Mickiewicz Avenue 30, 30-059 Krakow, Poland)

  • Łukasz Winconek

    (Grand Activated Sp. z o.o., Białostocka 1, 17-200 Hajnówka, Poland)

  • Piotr Burmistrz

    (Faculty of Energy & Fuels, AGH University of Science and Technology, Mickiewicz Avenue 30, 30-059 Krakow, Poland)

Abstract

Power production from coal combustion is one of two major anthropogenic sources of mercury emission to the atmosphere. The aim of this study is the analysis of the carbon footprint of mercury removal technologies through sorbents injection related to the removal of 1 kg of mercury from flue gases. Two sorbents, i.e., powdered activated carbon and the coke dust, were analysed. The assessment included both direct and indirect emissions related to various energy and material needs life cycle including coal mining and transport, sorbents production, transport of sorbents to the power plants, and injection into flue gases. The results show that at the average mercury concentration in processed flue gasses accounting to 28.0 µg Hg/Nm 3 , removal of 1 kg of mercury from flue gases required 14.925 Mg of powdered activated carbon and 33.594 Mg of coke dust, respectively. However, the whole life cycle carbon footprint for powdered activated carbon amounted to 89.548 Mg CO 2-e ·kg −1 Hg, whereas for coke dust this value was around three times lower and amounted to 24.452 Mg CO 2-e ·kg −1 Hg. Considering the relatively low price of coke dust and its lower impact on GHG emissions, it can be found as a promising alternative to commercial powdered activated carbon.

Suggested Citation

  • Magdalena Gazda-Grzywacz & Łukasz Winconek & Piotr Burmistrz, 2021. "Carbon Footprint for Mercury Capture from Coal-Fired Boiler Flue Gas," Energies, MDPI, vol. 14(13), pages 1-13, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3844-:d:582614
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    Citations

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    Cited by:

    1. Muhammad Salim Butt & Hifsa Shahid & Farhan Ahmed Butt & Iqra Farhat & Munazza Sadaf & Muhammad Raashid & Ahmad Taha, 2022. "Power Generation Analysis of Terrestrial Ultraviolet-Assisted Solid Oxide Electrolyzer Cell," Energies, MDPI, vol. 15(3), pages 1-14, January.
    2. Robert Wejkowski & Sylwester Kalisz & Mateusz Tymoszuk & Szymon Ciukaj & Izabella Maj, 2021. "Full-Scale Investigation of Dry Sorbent Injection for NO x Emission Control and Mercury Retention," Energies, MDPI, vol. 14(22), pages 1-13, November.
    3. Marek Sciazko & Aleksander Sobolewski, 2021. "Special Issue [Energies] “Clean Utilization and Conversion Technology of Coal”," Energies, MDPI, vol. 14(15), pages 1-3, July.

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