Evaluation of particulate matter in coal bottom ash and its possible ecotoxic effects: a preliminary study
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Industrial activities that use coal as a source of energy generate considerable quantities of solid waste that affect the natural dynamics of the environment, as well as human health. Between the generated waste is coal bottom ash, which could generate adverse effects on human health, especially respiratory conditions. In this sense, a physical (particle size), chemical, and environmental characterization of bottom ashes generated from the combustion of coal in a Colombian industry. The techniques used for particle size analysis were scanning electron microscopy (SEM), transmission electron microscopy (TEM), and optical microscopy, where particulate matter of environmental interest PM10 y PM2.5 is observed. A chemical analysis was also carried out through the X-ray Fluorescence technique and thermogravimetric analysis to determine the unburned carbon content. Additionally, a bioassay was carried out with Vigna radiata seeds which indicated a reduction in the radicle, being more noticeable in a concentration of 50% to 100% ash. In the ashes studied, particles at the scale of microns and nanometers were found that could generate negative health effects due to inhalation; as well as the content of heavy metals and compounds of concern due to their potential risk to health and the environment.
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Accepted 2024-03-05
Published 2024-02-26
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