كليدواژه :
Hazardous waste disposal , Incineration , Laboratory animals carcasses , لانه حيوانات آزمايشگاهي , سوزاندن , دفع مواد زايد خطرناك , پزشكي
چكيده لاتين :
Introduction: Environmental problems due to hazardous wastes production are increasing everyday. Laboratories of Isfahan University of Medical Sciences produce hazardous wastes in their daily research avtivities. These hazardous wastes are produced from laboratory animalsʹ carcasses, which were used in educational and research activities. These carcasses are mixed with other wastes while they are contaminated with pathogenic organisms, talc and chemical agents. These wastes can contaminate environment and threaten humanʹs health. So, carcasses produced in laboratories should be collected and handle with a specific method in order to destruct in an incinerator.
Methods: In this study, methods of collection , storage and destruction of laboratory animalsʹ carcasses in Isfahan university of medical Sciences were evaluated during four months. Specific questionnaires were used for data collection . The mean weight of carcasses of each labratories, produced within a week, were calculated. DRE (Destruction and Removal Efficacy )in different Temperatures in the incinerator were calculated .
Results: Mean weight of laboratory animalsʹ carcasses produced during a week in all the laboratories were 20kg. DRE in the incinerator were 9529% in 750°c temperature during 1 hour , 94.20% in 850°c temperature during 30 minutes, 94.10% in 950°c temperature during 20 minutes and 94.80% in 1000°c temperature during 15 minutes.
Discussion: According to laboratory animalsʹ carcasses contamination with pathogenic organisms, toxic and chemical agents, present methods of collection, storage and destruction arenʹt standard and healthy. Also, due to low amount of carcasses daily production, everyday destruction of these carcasses isnʹt economic. As a result, carcasses produced everyday should be stored in a collecting box under zero temperature and destruct at the end of the week in the designed incinerator in 1000°c temperatoure .
