Evaluación de bioaerosoles desde un relleno sanitario en el departamento del Atlántico.
González Vallejo, Elías
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AbstractBioaerosols are particles of biological origin that can be generated and dispersed by various sources at high concentrations, such as sewage treatment plants, landfills, among others. The emission of bioaerosols in landfills poses a potential risk to workers' health, which must be controlled. In Colombia, they have not established environmental regulations governing the control of bioaerosols, since there are few technical studies related to these particles. In the present investigation, the concentration of bioaerosols was evaluated from a landfill located in the department of Atlántico, Colombia. To this, 6 monitoring campaigns in 4 points within the various treatment stages (active cell: 1, leachate pools: 1 and passive cells: 2) were performed. A six-stage cascade impactor operating at 28.3 L/min for 5 min and located at 1.5 m high with two culture media, Plate Count Agar for bacteria and Sabouraud for fungi, was used. Weather conditions were also collected during sampling campaigns with the help of an anemometer KESTREL 4500. The maximum geometric average registered for aerobacterias was 850.18 CFU/m3 during the afternoon in the active cell, while for fungal aerosols was presented in the morning at the station located between the leachate pools, with a concentration of 382.09 CFU/m3. The correlations obtained show that for fungal aerosols in the morning the temperature has an indirect correlation (-0.29) while the relative humidity has a direct correlation (0.24); for the concentration of aerobacterias a direct correlation on the same period with temperature (0.33) was presented. According to ANOVA hierarchical, the statistically significant stage for aerobacterias concentrations was the active cell, although for fungal aerosols was leachate pools. In addition, high concentrations of respirable bioaerosols harmful to health resulting from the size that allows them to travel quickly by wind, inhaled and reach the pulmonary alveoli and bronchi, mainly affecting the personnel working at the landfill were reported