Treatment of clinical solid waste using steam autoclave as a possible alternative technology of incineration

Sarker, Md. Zaidul Islam (2012) Treatment of clinical solid waste using steam autoclave as a possible alternative technology of incineration. International Journal of Environmental Research and Public Health, 9 (3). pp. 855-867. ISSN 1660-4601(o)

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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.

Item Type:	Article (Journal)
Additional Information:	6605/17996
Uncontrolled Keywords:	autoclave; clinical solid waste; clinical solid waste management; inactivation 38 of bacteria; treatment technology
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Pharmacy > Department of Pharmaceutical Technology
Depositing User:	Professor Md. Zaidul Islam Sarker
Date Deposited:	01 Jun 2012 15:20
Last Modified:	15 Dec 2016 15:42
URI:	http://irep.iium.edu.my/id/eprint/17996

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