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Author Spotlight: Microbial Control and Monitoring Strategies for Cleanroom Environments and Cellular Therapies

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Published on: March 17, 2023

Airborne microorganisms associated with packaging glass sorting facilities.

Marta Jorge de Vasconcelos Pinto¹, José Miguel Veiga, Paulo Fernandes

¹a Instituto Politécnico de Coimbra , ESTESC-Coimbra Health School , Saúde Ambiental , Coimbra , Portugal.

Journal of Toxicology and Environmental Health. Part A

|June 4, 2015

Summary

Workers in glass recycling plants face high exposure to bacteria and fungi. The critical sorting areas show the most contamination, emphasizing the need for risk assessment and facility design to protect worker health.

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Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions

Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions

Published on: January 7, 2019

Area of Science:

Environmental microbiology
Occupational health and safety
Waste management science

Background:

The waste management sector is growing, increasing worker exposure to occupational hazards.
Understanding and quantifying risks from biological agents is crucial for worker safety.
Preventive measures are essential in waste sorting facilities.

Purpose of the Study:

To assess occupational exposure risks to bacteria and fungi in a Portuguese glass waste sorting plant.
To identify and quantify biological agents in different work areas and seasons.
To evaluate the impact of seasonal variations on microbial contamination levels.

Main Methods:

Air sampling using an impaction method in critical (sorting cabins), noncritical (administrative), and outdoor (control) areas.
Sampling conducted over an 8-month period, covering autumn/winter and spring/summer seasons.
Identification of bacterial and fungal genera from collected air samples.

Main Results:

High levels of environmental contamination by bacteria (1.6 × 10^4 cfu/m^3) and fungi (1.5 × 10^4 cfu/m^3) were detected.
Staphylococcus (coagulase-negative) was the predominant bacterial genus, with higher counts in warmer seasons.
Penicillium was the most frequent fungal genus (approx. 95% in critical areas); seasonal variation significantly impacted microbial loads.

Conclusions:

Waste sorting cabins (critical areas) exhibited the highest bacterial and fungal concentrations.
Seasonal variations play a significant role in the proliferation of airborne biological agents.
Effective facility design and risk evaluation are critical to minimize worker exposure to biological agents.