Distribution characteristics and noncarcinogenic risk assessment of culturable airborne bacteria and fungi during winter in Xinxiang, China

This study was performed to investigate the distribution characteristics of airborne bacteria emitted from swine manure composting plants. The types of swine manure composting plants selected for the survey in this study were as follows: screw type, rotary type, and natural dry type. Mean levels of airborne bacteria in swine manure composting plants were 7428 (±1024) CFU m−3 for the screw type, 3246 (±1407) CFU m−3 for the rotary type, and 5232 (±1217) CFU m−3 for the natural dry type, respectively. Based on the results obtained from this study, the swine manure composting plant operated by screw type showed the highest concentration of airborne bacteria, followed by the natural dry type and rotary type. The monthly concentration of airborne bacteria was the highest in August and the lowest in November, regardless of the type of swine manure composting plant. The respirable size of airborne bacteria accounted for about 50% of the total. The ratio of respirable to the total quantity of airborne bacteria was 50%. The correlation relationships between airborne bacteria and environmental factors (temperature, relative humidity, particulate matters, and odor) were not found to be significant in the swine manure composting plants. The predominant genera of airborne bacteria identified were Micrococcus spp., Staphylococcus spp., Escherichia(E-coli) spp., Enterococcus spp., and Enterobacteriaceae spp.

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Thermal Environmental Interference with Airborne Bacteria and Fungi Levels in Air-Conditioned Offices

Indoor and Built Environment ◽

10.1177/1420326x08089260 ◽

2008 ◽

Vol 17 (2) ◽

pp. 122-127 ◽

Cited By ~ 13

Author(s):

L.T. Wong ◽

K.W. Mui ◽

P.S. Hui ◽

W.Y. Chan ◽

A.K.Y. Law

Keyword(s):

Airborne Bacteria ◽

Bacteria And Fungi ◽

Environmental Interference

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Airborne bacteria in a wastewater treatment plant: Emission characterization, source analysis and health risk assessment

Water Research ◽

10.1016/j.watres.2018.11.027 ◽

2019 ◽

Vol 149 ◽

pp. 596-606 ◽

Cited By ~ 35

Author(s):

Kaixiong Yang ◽

Lin Li ◽

Yanjie Wang ◽

Song Xue ◽

Yunping Han ◽

...

Keyword(s):

Risk Assessment ◽

Wastewater Treatment ◽

Health Risk ◽

Health Risk Assessment ◽

Wastewater Treatment Plant ◽

Treatment Plant ◽

Source Analysis ◽

Airborne Bacteria

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Airborne Bacteria and Fungi Concentration in Relation with Bedding Type in Broiler Houses

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Veterinary Medicine ◽

10.15835/buasvmcn-vm:2018.0033 ◽

2019 ◽

Vol 76 (2) ◽

pp. 222

Author(s):

Silvana POPESCU ◽

Cristin BORDA ◽

Cristina EL MAHDY ◽

Eva Andrea LAZAR ◽

Anamaria BLAGA PETREAN ◽

...

Keyword(s):

Sunflower Seed ◽

Microbial Contamination ◽

Production Cycle ◽

Airborne Bacteria ◽

Airborne Concentration ◽

Commercial Farms ◽

Bacteria And Fungi

The aim of this work was the investigation of the effect of bedding type on the airborne concentration of bacteria and fungi in broiler houses. The study was performed in two commercial farms (A and B) with different bedding (chopped straw in farm A, sunflower seed hulls in farm B). The determination of the bacteria and fungi’s numbers was performed in the first and the sixth weeks of the production cycle. Both the concentration of the bacteria and fungi showed higher values in the farm A compared with the farm B, especially in the latter period of the production cycle. In both farms, significant differences (P < 0.05) were recorded between the two periods of the determinations. The results of this study suggest that using sunflower seed hulls as bedding leads to lower levels of microbial contamination of the air in broiler houses, comparing with the use of chopped straw.

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