Quality of Ashes Produced in the Co-Combustion of Coal and MBM in a Fluidized Bed Reactor

Authors

  • R. Barbosa Author
  • N. Lapa Author
  • H. Lopes Author
  • I. Gulyurtlu Author
  • B. Mendes Author

DOI:

https://doi.org/10.24084/repqj09.526

Abstract

Since the 90’s decade there are severe restrictions to the use of MBM, due to BSE. The co-combustion of Meat and Bone Meal (MBM) and coal is a possible energetic valorization route for MBM. However, the chemical and ecotoxicological properties of the ashes produced in this co-combustion process need to be more characterized. In order to evaluate the chemical and ecotoxicological properties of this type of ashes, three combustion tests were performed in a fluidized bed reactor (FBR): 1) combustion of coal; 2) co-combustion of coal and MBM; 3) combustion of MBM. The characterization of the ashes was focused on the following aspects: (1) the bulk content of metals; and (2) the chemical and ecotoxicological characterization of eluates. The ashes were classified according to their ecotoxicity levels based on the French regulation CEMWE. According to Council Decision (CD) 2003/33/EC, all fly ashes need stabilization prior to landfilling, except the 1st cyclone ash produced in the co-combustion test that could be landfilled in a hazardous waste landfill. The bottom ashes were classified as non-hazardous residues. The novelty of this paper is related with two aspects: 1) the use of MBM as co-fuel; and 2) both chemical and ecotoxicological characterization of the ashes produced during the combustion of coal and MBM

Author Biographies

  • R. Barbosa

    UBiA, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal,

    e-mail: rfb@fct.unl.pt

  • N. Lapa

    UBiA, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal

  • H. Lopes

    LNEG, UEZ, Ed. J., Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal

  • I. Gulyurtlu

    LNEG, UEZ, Ed. J., Estrada do Paço do Lumiar, 22, 1649-038 Lisboa, Portugal

  • B. Mendes

    UBiA, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal

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Published

2024-01-17

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Section

Articles