Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion

Biomass combustion is known to be one of the main contributors to air pollution. However, the influence of biomass burning on the distribution of viable bacterial and fungal aerosols is uncertain. This study aimed to examine survivability of bacteria and fungi in the post-combustion products, and to...

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Main Authors: Ekaterina Mirskaya, Igor E. Agranovski
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Atmosphere
Subjects:
Online Access:https://www.mdpi.com/2073-4433/11/3/313
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author Ekaterina Mirskaya
Igor E. Agranovski
author_facet Ekaterina Mirskaya
Igor E. Agranovski
author_sort Ekaterina Mirskaya
collection DOAJ
description Biomass combustion is known to be one of the main contributors to air pollution. However, the influence of biomass burning on the distribution of viable bacterial and fungal aerosols is uncertain. This study aimed to examine survivability of bacteria and fungi in the post-combustion products, and to investigate the aerosolization of viable cells during combustion of different types of organic materials. Laboratory experiments included a small-scale combustion of organic materials contaminated with microorganisms in order to determine the survivability of microbes in the combustion products and the potential aerosolization of viable cells during combustion. Field experiments were completed during intentional and prescribed biomass burning events in order to investigate the aerosolization mechanisms that are not available at the laboratory scale. Laboratory experiments did not demonstrate aerosolization of microorganisms during biomass combustion. However, the relatively high survival rate of bacteria in the combustion products ought to be accounted for, as the surviving microorganisms can potentially be aerosolized by high velocity natural air flows. Field investigations demonstrated significant increase in the bioaerosol concentration above natural background during and after biomass combustion.
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spelling doaj.art-1cc9f598088c49be93aafba279ea91552022-12-21T23:34:53ZengMDPI AGAtmosphere2073-44332020-03-0111331310.3390/atmos11030313atmos11030313Generation of Viable Bacterial and Fungal Aerosols during Biomass CombustionEkaterina Mirskaya0Igor E. Agranovski1School of Engineering, Griffith University, Nathan 4111, AustraliaSchool of Engineering, Griffith University, Nathan 4111, AustraliaBiomass combustion is known to be one of the main contributors to air pollution. However, the influence of biomass burning on the distribution of viable bacterial and fungal aerosols is uncertain. This study aimed to examine survivability of bacteria and fungi in the post-combustion products, and to investigate the aerosolization of viable cells during combustion of different types of organic materials. Laboratory experiments included a small-scale combustion of organic materials contaminated with microorganisms in order to determine the survivability of microbes in the combustion products and the potential aerosolization of viable cells during combustion. Field experiments were completed during intentional and prescribed biomass burning events in order to investigate the aerosolization mechanisms that are not available at the laboratory scale. Laboratory experiments did not demonstrate aerosolization of microorganisms during biomass combustion. However, the relatively high survival rate of bacteria in the combustion products ought to be accounted for, as the surviving microorganisms can potentially be aerosolized by high velocity natural air flows. Field investigations demonstrated significant increase in the bioaerosol concentration above natural background during and after biomass combustion.https://www.mdpi.com/2073-4433/11/3/313bioaerosol generationbiomass combustioncombustion bioaerosolshigh temperature bioaerosolsprescribed burning
spellingShingle Ekaterina Mirskaya
Igor E. Agranovski
Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion
Atmosphere
bioaerosol generation
biomass combustion
combustion bioaerosols
high temperature bioaerosols
prescribed burning
title Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion
title_full Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion
title_fullStr Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion
title_full_unstemmed Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion
title_short Generation of Viable Bacterial and Fungal Aerosols during Biomass Combustion
title_sort generation of viable bacterial and fungal aerosols during biomass combustion
topic bioaerosol generation
biomass combustion
combustion bioaerosols
high temperature bioaerosols
prescribed burning
url https://www.mdpi.com/2073-4433/11/3/313
work_keys_str_mv AT ekaterinamirskaya generationofviablebacterialandfungalaerosolsduringbiomasscombustion
AT igoreagranovski generationofviablebacterialandfungalaerosolsduringbiomasscombustion