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Abstract

A pathological waste incinerator, consisting of a primary chamber operating at greater than 570°C and a secondary chamber operating at greater than 870°C with associated stack, was challenged with bacteriophage f2 of Escherichia coli K12 to demonstrate the decontamination efficiency.

A mean challenge of 10^13.27 plaque forming units (pfu) of bacteriophage was sprayed into the primary chamber over a period of 30 seconds. A second, separate mean challenge of 10^12.53 was sprayed into the incinerator stack. Matching challenges were done while the incinerator was at ambient temperature. Copper nitrate was used to compare the sampling efficiency when the incinerator was operating hot and cold.

A reduction of 10^8.39 pfu of bacteriophage was demonstrated through the primary and secondary combustion chambers. A further reduction of 10^7.65 pfu was achieved within the stack. The overall reduction through die chambers and the stack was W^16.04 pfu.

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Biological Testing of a Laboratory Pathological Waste Incinerator

Abstract

References