This paper discusses the present hazardous waste program of 3M Company (Minnesota Mining and Manufacturing Company). 3M's definition of hazardous waste and the company's position on hazardous waste disposal are first considered. The company position is that wherever and whenever the disposal of a waste material threatens the environment or public safety, then that waste should be considered a h...

Supercritical water oxidation provides a powerful means to transform toxic organic materials into simple, relatively inert oxides. Over the past decade, our understanding of the fundamental chemistry of this process has increased markedly. Many fascinating research papers are appearing from laboratories around the world, on the use of the technique for the decomposition of a variety of organic ...

Solid Waste Management (SWM) system in Bhopal has deteriorated recently to the point that only limited waste collection is undertaken in certain urban areas and disposal is largely to uncontrolled dump sites. In this study, the technical, economical, and environmental aspects of three SWM scenarios were investigated aiming to compare the scenarios and select the most appropriate one for impleme...

Sanganur canal is the major open drainage system which has intricate linkage with storm water supply, domestic sewage and industrial effluent disposal. Water samples from various stations were collected and analysed for physicochemical parameters to assess the water quality of the Sanganur canal system. The study revealed that physicochemical parameters like pH, EC, TDS, DO, BOD, COD exceeded t...

Xylenes (mixtures of ortho-, meta-, and para-isomers) are used as industrial solvents, synthetic intermediates, and solvents in commercial products such as paints, coatings, adhesive removers, and paint thinners; they are also a component of gasoline. Xylenes are released to the atmosphere primarily as fugitive emissions from industrial sources (e.g., petroleum refineries, chemical plants), in ...

Since the second part of 20th century, there has been growing concern over the diverse ef‐ fects of heavy metals on humans and aquatic ecosystems. Environmental impact of heavy metals was earlier mostly attributed to industrial sources. In recent years, metal production emissions have decreased in many countries due to strict legislation, improved cleaning/ purification technology and altered i...

I ssues pertaining to the disposal of surgical waste are seldom discussed in the dermatologic surgery literature. Management of surgical waste as pertaining to the surgeon includes proper disposal of sharps in appropriate containers as well as proper handling and disposal of infectious nonsharp materials. Attention should be paid to two particular issues. First and foremost is to minimize the r...

No previous studies about the management of medical waste have been published in Yemen. This research in 5 government and 12 private hospitals in Sana'a aimed to evaluate waste-workers' and hospital administrators' knowledge and practices regarding medical waste handling. Interviews and observations showedadministrators' knowledge and practices regarding medical waste handling. Interviews and o...

health care wastes, which produce in most hospitals, laboratories and clinics, causes spread of dangerous and contagious diseases and are a serious threat to human health and the environment due to contamination and the losses caused by the lack of health care waste management. now days there are 4 common technologies for the disposal of hospital waste which is taken into consideration by the m...

The separation (or removal) of organic residues from aqueous waste streams released from industries is important and essential from the points of view of pollution control and recovery of useful materials. The disposal of waste waters containing most widely-used industrial organic acids such as acetic acid, formic acid and propionic acid has been recognized as a significant expense to the indus...