نتایج جستجو برای: toxic wastes
تعداد نتایج: 89648 فیلتر نتایج به سال:
Detection of traces of toxic chemicals in drinking water supplies, in polar ice caps, groundwater sources and episodes such as those in Minamata Bay, Japan and Love Canal, USA have focussed the attention of the public worldwide on the risks posed by the inappropriate disposal of hazardous waste and accidental release of toxic chemicals into the environment. In India regulations to control and m...
The ability of Bacillus sp. MRKV isolated from tannery effluent which shows resistant towards hexavalent chromium potassium dichromate (K2Cr2O7) was evaluated in this study. The bacterial strain was assayed for its reducing ability towards K2Cr2O7. The study revealed that the isolated strain has the ability to reduce the hexavalent chromium and the optimal conditions required for the chromium r...
Background and purpose: Physical analysis of solid waste is the first step in waste management. In Iran, no data is available about rural solid wastes in the country. The aim of this study was to determine qualitative and quantitative analysis of rural solid wastes in Iran. Materials and methods: In this cross-sectional study, the data for national rural solid waste in 2012 was obtained from...
Backgrounds and Objectives:Today, One of the most important environmental issues is solid waste Produced in Dentistry That because of the presence of hazardous, toxic and pathogen agents has special importance. In this survey, solid waste produced in Hamadan Dentistry laboratories and practical dentist offices is studied.Materials and Methods: In this descriptive study, from 24 Dentistry labora...
hospital wastes are one of most important environmental problems because of their hazardous, toxic and pathogenic characteristics. the aims of this study were to identify and measure the amount of hospital wastes and classify of them according to who criteria in amirolmomenin(as) hospital and shahid rajaei policlinic in ahwaz, sw of iran. this research was a field-descriptive study. initially, ...
The vitrification of zinc-hydrometallurgy wastes, electric arc furnace dust (EAFD), drainage mud, and granite mud was shown to immobilize the hazardous components in these wastes. Batch compositions were prepared by mixing the wastes with glass-cullet and sand to force the final glass composition into the glass forming region of the SiO2-Fe2O3-(CaO, MgO) system. The vitrification was carried ou...
Medical wastes are highly infectious and hazardous. It may carry the germs of dreadful diseases like hepatitis B and C (jaundice), and HIV/AIDS. It contains toxic chemicals and hazardous materials from several diagnostic and treatment processes. The improper disposal of Medical waste in the CMCH poses a high health risk to humans as well as the environment. This study was carried out from July ...
background: dental wastes are one of the environmental issues due to toxic and pathogenic agents such as pathological wastes, pharmaceutical and chemical etc have particular sensitivity. the aim of this study was to determine the dental waste management and related factors in the city of ilam. methods: in this cross-sectional study, the studied community was all the sixteen dental clinics in il...
This report discusses various types of environmental waste products, current status of waste destruction, and the application of plasma technology for waste treatment. Plasma processes are divided into three types: open bath systems, shaft furnaces, and gas-cracking systems. These three types of plasma systems have the capability of treating a large number of different types of wastes and reduc...
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