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A Study of Dominant Microorganisms in Waste Handling Industries  

Park, Hae Dong (Occupational Safety and Health Research Institute, KOSHA)
Park, Hyunhee (Occupational Safety and Health Research Institute, KOSHA)
Publication Information
Journal of Korean Society of Occupational and Environmental Hygiene / v.23, no.2, 2013 , pp. 84-94 More about this Journal
Abstract
Objectives: The objective of this study is to identify the composition of dominant microorganisms in waste handling industries. Methods: We collected airborne bacteria and fungi by agar plate impaction method in recyclable waste sorting industry, food recycling industry, landfill and incineration. Isolated dominant microorganisms were identified by VITEK system or morphological analysis. Results: We isolated totally 330 microorganisms in the process and outdoor. Bacillus was the most dominant genus in the all industries, and Sphingomonas, Acinetobacter, Staphylococcus, and Proteus was dominant bacterial genus. The dominant genus of fungi was Penicillium, Aspergillus, and Cladosporium in each industries. Enterobacter, Pseudomonas, Klebsiella, and Proteus was identified as the dominant gram negative bacteria. The ratio of bacteria being biosafety levels(class 1 or 2) was 58.3~77.8%. Conclusions: This study has investigated the dominant microorganisms in the waste handling industries. The genus of dominant microorganisms was similar among the industries but the composition was different. We used biosafety levels as qualitative method, but further studies are needed about specific process of qualitative evaluation methods.
Keywords
Biological agent; bacteria; microbial identification; waste handling industry; biosafety level;
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