Is your staff wise in waste management?
All laboratorians must learn their labs' protocols for hazardous waste disposal, including emergency plans and comprehensive procedures for storage, packing, and hauling.
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All laboratorians must learn their labs' protocols for hazardous waste disposal, including emergency plans and comprehensive procedures for storage, packing, and hauling.
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ADA members are encouraged to evaluate their personal and professional practices and take action to more effectively conserve natural resources and protect the environment. Dietetics professionals' knowledge of the complexity of the issues associated with environmental concerns should be increased through participation in continuing education activities. Knowledgeable members should be proactive in implementing programs to conserve natural resources and protect the environment and participate in the legislative process within their states and communities. ADA supports programs designed to preserve natural resources and protect the environment. ADA is committed to enhancing the quality of life for future generations.
Because of limited space, the siting and construction of a new SWM facility is a big challenge in Japan. An SWM facility should be socially accepted as well as environmentally and economically sound. This study aimed to investigate people's concerns about SWM facilities and their attitudes towards such facilities. A questionnaire was designed based on literature reviews and was sent to residents in three municipalities with different backgrounds. The questions covered concerns on the impact of an SWM facility, management aspects, unfairness of facility siting, and attitudes to facility construction. Of the many concerns, "pollution and health effect" had the highest rating, followed by "reliability", "damage to nature" and "cost". The rating was different between municipalities, reflecting their geographic and social backgrounds. Using factor analysis, correlations among concerns were analyzed, and five principal components were extracted, namely "pollution", "nuisance", "facility management", "planning of facility", and "merit/demerit". Although obvious correlations were not found between individual items of concern and attitudes to construction of a facility, the discriminant analysis indicated dominant concerns of attitudes, but the disagreement between actual impact and citizens were found. As for attributes, the "opposed" attitude decreased for residents who had visited an SWM facility, even if they had only seen it from outside.
This paper deals with the Danish investigations of garbage recycling workers (GRW) in the beginning of the 90ties. The studies are summarized here showing a wide range of symptoms and diseases, from occupational asthma to gastrointestinal and skin symptoms. From the Danish experiences it seems that under normal circumstances with a good hygiene and use of the proper protective equipment by an educated work force, garbage handling induces a small but significant risk of occupational asthma. The majority of the asthma cases we have experienced in Denmark have been due to a poor perception of the risks related to organic dust exposure. However, there is still an increased prevalence of respiratory symptoms such as chest tightness and toxic alveolitis. Furthermore gastrointestinal and skin symptoms are more frequent among GRW compared to other blue-collar workers.
Dental amalgam has been extensively used as a tooth filling material for many decades and has beyond doubt saved millions of teeth that otherwise would have needed to be extracted. The release of amalgam particles into dental office wastewater is a matter of particular concern as amalgam particles could then be discharged into the environment. Amalgam waste discharges contribute to mercury in the environment through direct wastewater discharge, incineration, land-filling and sewage sludge incineration, although the discharge from dentistry is probably responsible for less than 1% of the total mercury discharged annually into the environment as a result of human activities. Nevertheless, dentists, by being producers of amalgam waste, have a responsibility and a duty of care for the proper management of this waste within their practices. Appropriate measures should be taken to minimise the amount of waste where possible or take action to ensure that all generated waste is disposed of in accordance with environmental legislation.
The uptake of Ba(II) and Sr(II) by hydrous ferric oxide (HFO) was studied as a function of contact time, concentration, temperature and pH of the respective adsorptive solutions employing the 'radiotracer technique'. The uptake of both the ions was found to increase with the increase in concentration, temperature and pH of the adsorptive solutions. Concentration dependence data fitted well to the Freundlich adsorption isotherm over the entire range of concentration (10(-2)-10(-7) M) and the uptake process followed first-order rate kinetics. The desorption experiments demonstrate the irreversible nature of the uptake process, however, in the presence of H+ ions, i.e. on acidification, an appreciable amount of metal ions were removed in the bulk solution. The radiation stability of hydrous ferric oxide towards the uptake of Ba(II) and Sr(II) was also examined by using samples of hydrous ferric oxide irradiated by neutrons and gamma-rays prior to be employing as sorbents. The presence of some mono- and divalent co-ions along with the studied ions suppressed their removal appreciably.
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