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Document ID (ISN)101849
CIS number 03-928
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 2002
Convention or series no.
Author(s) Johnson D.L., Phillips M.L.
Title UV disinfection of soluble oil metalworking fluids
Bibliographic information Mar.-Apr. 2002, Vol.63, No.2, p.178-183. Illus. 26 ref.
Abstract The efficiency of a new high-intensity ultraviolet (UV) lamp for the disinfection of metalworking fluids (MWF) was investigated under laboratory conditions. Three dilutions of MWFs and water controls in a circulating system were injected with suspensions of Pseudomonas fluorescens to an initial concentration of about 107 colony forming units (CFU) per milliliter and irradiated with a submerged UV lamp. Aliquots of the circulating fluid were withdrawn before irradiation and at 10min intervals. The samples were counted after 18-24h incubation. The concentration of CFU decreased by at least two logarithmic scales (>99% reduction in culturability) in all three dilutions of MWFs within 60min. The CFU concentration was stable over time in unirradiated samples. These results demonstrate that disinfection of MWFs by UV irradiation is feasible.
Descriptors (primary) ultraviolet radiation; bacteria; metalworking industry; irradiation; decontamination; cutting fluids
Descriptors (secondary) description of equipment; applied research; description of technique; sampling and analysis
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Metal production and metalworking
Broad subject area(s) Biological hazards
Browse category(ies) Ionizing radiation
Metalworking industry
Non-ionizing radiation