Infectious Hospital Waste Sterilization by the Rimm Microwave Process : Microbiological Results
In this paper, preliminary tests are presented to validate the sterilisation capabilities of a new compact apparatus for the sterilisation of medical waste, called MWS ECOPROTECTORTM. The MWS process is constituted of two essential steps: waste shredding and microwave heating in a pressure vessel with a particularly efficient technology called RIMMä ä. Upon shredding, the waste is wetted with a disinfecting solution in order to increase microwave absorption and to disinfect the shredder surfaces. Bacteriological tests on steel holders allow the choice of an optimum disinfecting solution among four commercial ones. The microwave heat treatment of artificially contaminated waste has proven to be safe. A sterilisation of infected loads with a decimal log reduction > 6 is obtained in accordance to pharmacopoeia.