Aerosolization of fine particles increases due to microbial contamination of metalworking fluids
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| Title: | Aerosolization of fine particles increases due to microbial contamination of metalworking fluids |
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| Authors: | Wang, H.X.1, Reponen, T. tiina.reponen@uc.edu, Li, W.1, Martuzevicius, D., Grinshpun, S.A.1, Willeke, K.1 |
| Source: | Journal of Aerosol Science. May2005, Vol. 36 Issue 5/6, p721-734. 14p. |
| Subjects: | Microbial contamination, Microbiology, Microorganisms, Fluid mechanics |
| Abstract: | Abstract: Aerosolization of microorganisms from metalworking fluids (MWFs) was studied using a laboratory-scale set-up simulating grinding operations. An optical particle counter (OPC), a condensation nucleus counter (CNC), an electrical low pressure impactor (ELPI), and a photometric aerosol mass monitor were used to measure the airborne particles and microorganisms aerosolized from MWFs. The tests were performed using a semi-synthetic MWF with and without bacterial contamination (Pseudomonas fluorescens). Microbial contamination of the MWF increased the number and mass concentrations of aerosolized particles by a factor of 2 (as measured by the OPC and the photometric aerosol mass monitor, respectively). At the same time, there was an up to 50-fold increase in the concentration of fine particles , as measured by the CNC. The data collected with the ELPI showed that the peak of the fine particle number concentration was at . The results indicate that MWF mist may contain high concentrations of microbial fragments, which may not be detected by traditional microbial analysis methods, such as cultivation or microscopic counting. [Copyright &y& Elsevier] |
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| Database: | Engineering Source |
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