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A preliminary method for determining acceptable trace element levels in coal

Author

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  • Wang, Wenfeng
  • Qin, Yong
  • Wang, Junyi
  • Li, Jian
  • Weiss, Dominik J.

Abstract

A preliminary method for determining acceptable trace element levels in coal was established. In addition to the conventional coal quality parameters ash and sulfur, potentially hazardous trace elements As, Be, Cd, Cl, Cr, F, Hg, Mn, Ni, Pb and Se were selected for the evaluation, and their environmentally acceptable concentrations in coal were quantified at 5 and 0.5 weight %, and 6.5, 1, 0.8, 400, 15, 120, 0.15, 80, 30, 15 and 2.5mg/kg, respectively. A pollution index (I) is proposed, by which coal is ranked into four classes: acceptable (I≤0.252), marginal (0.2520.751). 36 coal samples collected from the north of Ordos basin and Shanxi Province, China were classified with the method. Most of the cleaned coals were rated as acceptable or marginal, while the run-in-mine coals, feed coals, middlings and coal slimes were generally ranked as unacceptable or ultra-unacceptable coal. The evaluation results reflect the degree of cleanliness of these coal samples.

Suggested Citation

  • Wang, Wenfeng & Qin, Yong & Wang, Junyi & Li, Jian & Weiss, Dominik J., 2010. "A preliminary method for determining acceptable trace element levels in coal," Energy, Elsevier, vol. 35(1), pages 70-76.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:1:p:70-76
    DOI: 10.1016/j.energy.2009.08.028
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    References listed on IDEAS

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    1. Franco, Alessandro & Diaz, Ana R., 2009. "The future challenges for “clean coal technologies”: Joining efficiency increase and pollutant emission control," Energy, Elsevier, vol. 34(3), pages 348-354.
    2. Liu, Guijian & Zheng, Liugen & Gao, Lianfen & Zhang, Haoyuan & Peng, Zicheng, 2005. "The characterization of coal quality from the Jining coalfield," Energy, Elsevier, vol. 30(10), pages 1903-1914.
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    2. Vamvuka, Despina & Trikouvertis, Marios & Pentari, Despina & Alevizos, George, 2014. "Evaluation of ashes produced from fluidized bed combustion of residues from oranges' plantations and processing," Renewable Energy, Elsevier, vol. 72(C), pages 336-343.

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