The assessment of airborne bacterial and fungal contamination emitted by a municipal landfill site in Northern Poland

Breza-Boruta, Barbara

doi:10.1016/j.apr.2016.06.011

Cited by 39 publications

(24 citation statements)

References 31 publications

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“…Aureobasidium and Acremonium were the least numerous, and accounted for only 2% and 1% of fungal population, respectively. Similar compositions were recorded by other researchers at landfi lls (Kalwasińska et al 2014, Breza-Boruta 2016 or sewage treatment plants (Viegas 2014, Kermani et al 2016.…”

Section: Discussionsupporting

confidence: 67%

Microbial air contamination on the premises of the sewage treatment plant in Bydgoszcz (Poland) and antibiotic resistance of Staphylococcus spp.

Małecka-Adamowicz

Donderski

Kolet

2017

Archives of Environmental Protection

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Abstract:The study was aimed at evaluating microbial contamination on the premises of the sewage treatment plant by determining the concentrations of selected groups of airborne microorganisms. Another objective was to determine the antibiotic sensitivity patterns of isolated strains of staphylococci. The research was conducted in a seasonal cycle, by the impaction method using Merck MAS-100 air sampler. Samples were collected at six sites, each representing a different stage of sewage treatment. The susceptibility of isolated staphylococci was assessed with the disc-diffusion method, following the recommendations of the EUCAST. The results indicate that the microbial population in the air of the investigated area was dominated by mold fungi, whose highest average concentration was recorded at site IV located near the fi nal clarifi er ). Heterotrophic bacteria and mannitol-positive staphylococci were the most numerous at locations where sewage undergoes primary treatment. In each subseuqent stage the number of microorganisms emitted into the air from the sewage was lower. Antibiograms show that more than 50% of Staphylococcus spp. exhibited resistance to penicillin and 20% to rifampicin. In addition, 90% of the analyzed strains were sensitive to other antibiotics. The fungal community included the following genera: Cladosporium, Fusarium, Alternaria, Penicillium, Aspergillus, Aureobasidium, and Acremonium.The highest air contamination with all studied groups of microorganisms was recorded at the locations where mechanical sewage treatment was performed. During the subsequent stages lower numbers of heterotrophic bacteria were emitted into the air.The air in the investigated sewage treatment plant did not contain multidrug-resistant staphylococci.

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Section: Discussionsupporting

confidence: 67%

Microbial air contamination on the premises of the sewage treatment plant in Bydgoszcz (Poland) and antibiotic resistance of Staphylococcus spp.

Małecka-Adamowicz

Donderski

Kolet

2017

Archives of Environmental Protection

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“…This unusual spike 316 in Aspergillus fumigatus during site monitoring may not be unrelated to the property of the 317 waste (waste rich in fungi) tipped at the dumpsite at the time of sampling. Bioaerosols exposure 318 from scavenging and sorting activities accounted for the highest exposure levels at the dumpsite, 319 levels comparable to or higher than other forms waste-to-land treatment of municipal solid waste such as landfilling and open windrow composing reported in some literature (Lis et al, 2004;Odeyemi 2012;Wéry 2014b;Breza-Boruta 2016).…”

Section: Activity-based Air Samplingmentioning

confidence: 84%

Exposure to bioaerosols at open dumpsites: A case study of bioaerosols exposure from activities at Olusosun open dumpsite, Lagos Nigeria

2019

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Activities associated with the open dumping of municipal solid waste has the potential to have 7 greater impacts on the environment and public health compared to other forms of waste-to-land treatment of such wastes. However, there is a lack of quantitative data on the exposure to bioaerosols from open dumpsites, hence impeding the development of effective interventions that would reduce the risk of respiratory symptoms among scavengers and waste workers at such dumpsites. This study investigated exposure to bioaerosols at Olusosun open dumpsite, Lagos Nigeria using three methodologies; (1) Conducting a cross-sectional survey on the respiratory health of the population on the dumpsite, (2) Measuring bioaerosol concentrations in the ambient air by measuring four bioaerosols indicator groups (total bacteria, gram-negative bacteria, Aspergillus fumigatus and total fungi) using a Anderson six stage impactor sampler, (3) Measuring activity related exposures to bioaerosols using an SKC button personal sampler. After a cross sectional health survey of 149 participants (waste workers, scavengers, middlemen, food vendors and business owners), smokers reported higher symptoms of chronic cough (21%) and chronic phlegm (15%) compared to non-smokers (chronic cough 15%, chronic phlegm 13%). Years of work > 5 years showed no statistically significant association with chronic phlegm (OR 1.2, 95% CI 0.4-3.4; p>0.05) or asthma (OR 1.8, 95% CI 0.6-5.2; p>0.05). At the 95 th percentile, the concentration of gram-negative bacteria was the highest (2188 CFU/m 3), then total bacteria (2189 CFU/m 3), total fungi (843 CFU/m 3) and Aspergillus fumigatus (441 CFU/m 3) after ambient air sampling. A comparison of the data showed that the activity-based sampling undertaken using body worn personal sampler showed higher 26 bioaerosols concentrations (10 4-10 6 CFU/m 3), i.e. 2-3 logs higher than those recorded from static ambient air sampling. Bioaerosol exposure was highest during scavenging activities compared to waste sorting and site supervision. Particle size distributions showed that 41%, 46%, 76% and 63% of total bacteria, gram-negative bacteria, Aspergillus fumigatus and total fungi respectively were of respirable sizes and would therefore be capable of penetrating deep into the respiratory system, posing a greater human health risk. This study has shown that exposure to bioaerosols can be associated with activities undertaken at open dumpsites and may contribute to the high prevalence of the chronic respiratory symptoms, among the workers in such environments.

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“…A wastewater aeration system plays an important role in the emission of microorganisms to the air. The works of various authors suggest that for reasons of air safety, more favourable is fine-bubble aeration, at which a bioaerosol emission level is lower [19,25,26]. Whereas, in anaerobic or anoxic chambers there is an intense mixing of wastewater, overflowing and turbulence, which causes the formation of considerable amount of harmful bioaerosols.…”

Section: Percentage Of Emission Ratiomentioning

confidence: 99%

The Variability of the Concentration of Bioaerosols Above the Chambers of Biological Wastewater Treatment

Michałkiewicz

Kruszelnicka

Widomska³

2018

Ecological Chemistry and Engineering S

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The article presents the results of research over microorganisms (psychrophilic and mesophilic bacteria and microscopic fungi) found in wastewater in denitrification and nitrification chambers and specifies the proportion of these microorganisms in bioaerosol at various levels above wastewater level (20, 50 and 100 cm). In the denitrification chamber (anoxic) in 1 cm3 of sewage there were on average 30.35 · 106 CFU of mesophilic bacteria, 72.88 · 106 CFU of psychrophilic bacteria, and 37.3 · 105 CFU of microscopic fungi. In the nitrification chamber, where the oxygen concentration ranged from 0.37 to 2.32 mg O2·dm−3 of wastewater, the number of microorganisms was lower. In 1 cm3 of wastewater there were on average 20.2 · 106 CFU of mesophilic bacteria, 51.76 · 106 CFU of psychrophilic bacteria, and 15.22 · 105 CFU of microscopic fungi. In sewage bioaerosols above these chambers, higher numbers of psychrophilic bacteria than mesophilic ones and microscopic fungi were reported. At the same time differences in the number of microorganisms at different heights above the surface of wastewater could be observed in bioaerosol, as well as between the chambers of the bioreactor. It was found that most frequently the amount of microorganisms decreased with height. The percentage emission ratio (ER) of microorganisms in bioaerosols coming from wastewater accounted for only a fraction of a percent and ranged from 1.13 · 10−8 % (microscopic fungi over the denitrification chamber) to 24.53 · 10−9 % (psychrophilic bacteria over the denitrification chamber). It was found that the process of mixing, aeration of wastewater, have an effect on the emission of microorganisms.

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The assessment of airborne bacterial and fungal contamination emitted by a municipal landfill site in Northern Poland

Cited by 39 publications

References 31 publications

Microbial air contamination on the premises of the sewage treatment plant in Bydgoszcz (Poland) and antibiotic resistance of Staphylococcus spp.

Microbial air contamination on the premises of the sewage treatment plant in Bydgoszcz (Poland) and antibiotic resistance of Staphylococcus spp.

Exposure to bioaerosols at open dumpsites: A case study of bioaerosols exposure from activities at Olusosun open dumpsite, Lagos Nigeria

The Variability of the Concentration of Bioaerosols Above the Chambers of Biological Wastewater Treatment

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