Artículo de revista
Pollution from uncontrolled coal fires: Continuous gaseous emissions and nanoparticles from coal mines
Registro en:
0959-6526
Corporación Universidad de la Costa
REDICUC - Repositorio CUC
Autor
Silva Oliveira, Marcos Leandro
Pinto Osorio, Diana Del Carmen
Fonseca Tutikian, Bernardo
Da Boit Martinello, Katia
K. Saikia, Binoy
Silva Oliveira, Luis Felipe
Institución
Resumen
In this investigation, the coal fires in different Colombian coal mines were studied using advanced
electron beam and X-ray diffraction techniques. The results were compared with information from highresolution transmission electron microscopy (HR-TEM) equipped with a dispersive X-ray detector (EDS).
Amorphous phases, salammoniac, anatase, muscovite, goethite, jarosite, calcite, gypsum, kaolinite, illite,
and quartz are the dominant mineral matter constituents in almost all of the coal fires, with minute
quantities of native sulfur, magnetite, siderite, pyrite, pickeringite, epsomite, hexahydrite, halotrichite
being present in around half of the investigated coal fire samples. Other minerals that are present in
some particular samples are chlorite, ankerite, and dolomite. Fe-sulfides were also detected particularly
in the pyrite-bearing coal fires, possibly indicating oxidation of the Fe-sulfides occurring with coal fires.
Exhaust discharge data indicate an overall trend of reducing carbon dioxide (CO2) and carbon monoxide
(CO) releases (between 1.5 and 34%) from the coal fires. This is the first report on Colombian coal fires,
which would be important for different perspectives of the research in the area.