Treatment of Clinical Solid Waste Using a Steam Autoclave as a Possible Alternative Technology to Incineration

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2012
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Ranked #708 of 862 articles by views in International journal of environmental research and public health

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Abstract
A steam autoclave was used to sterilize bacteria in clinical solid waste in order to determine an alternative to incineration technology in clinical solid waste management. The influence of contact time (0, 5, 15, 30 and 60 min) and temperature (111 °C, 121 °C and 131 °C) at automated saturated steam pressure was investigated. Results showed that with increasing contact time and temperature, the number of surviving bacteria decreased. The optimum experimental conditions as measured by degree of inactivation of bacteria were 121 °C for 15 minutes (min) for Gram negative bacteria, 121 °C and 131 °C for 60 and 30 min for Gram positive bacteria, respectively. The re-growth of bacteria in sterilized waste was also evaluated in the present study. It was found that bacterial re-growth started two days after the inactivation. The present study recommends that the steam autoclave cannot be considered as an alternative technology to incineration in clinical solid waste management.
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Autoren Md. Sohrab Hossain;Venugopal Balakrishnan;Nik Norulaini Nik Ab Rahman;Md. Zaidul Islam Sarker;Mohd Omar Ab Kadir;Hossain, Md. Sohrab;Balakrishnan, Venugopal;Rahman, Nik Norulaini Nik Ab;Sarker, Md. Zaidul Islam;Kadir, Mohd Omar Ab;
Zeitschrift International journal of environmental research and public health
Jahr 2012
DOI
10.3390/ijerph9030855
URL
https://www.mdpi.com/1660-4601/9/3/855##metrics
Schlüsselwörter
clinical solid waste clinical solid waste management autoclave inactivation of bacteria treatment technology

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