Supercritical CO2 fluid leaching (SFL) method using supercritical CO2 fluid containing a complex of HNO3 tri-n-butyl phosphate (TBP) was applied to removal of uranium from radioactive solid wastes. Sea sands, incineration ashes and porous alumina bricks were employed as matrixes of simulated solid wastes. Real radioactive incineration ash wastes and firebrick wastes were also subjected to the S...

The current study presents an investigation on the waste management in the cattle slaughterhouse by the following objectives: a) to identify the existing waste management practices in relation to sources, quantity and characteristic of wastes; b) to identify the situation of production, collection, storage, transportation, processing and recycling, and final disposal of wastes and the problems ...

electronic wastes (e-wastes) is the most rapidly growing segment of the municipal waste stream. e- wastes comprise 2-5 percent of municipal solid wastes, including many different electronic products. iran is the biggest consumer of electronic products in middle east. approximately, 1.2 million computers are assembled in iran every year. there are more than 40 million active cell phones in iran....

The wastes produced during the manufacture and use of paints have long been an environmental concern. Paint manufacturers have sought ways to reduce these wastes with significant success. Industrial paint users have also identified and implemented techniques and technologies to reduce their paint wastes. Frequently, these activities also result in reduced production and disposal costs. Despite ...

Of the 12 billion tons of waste generated annually in the United States; less than 10% is defined as hazardous under the provisions of RCRA. This paper summarizes the data available on some of the wastes that are defined as non-hazardous. These wastes include industrial non-hazardous waste, and several types of wastes that are currently exempted from hazardous waste regulations, such as oil and...

Nowadays, the increasing amount of wastes is a concerning reality and the environmental aspects has become a major priority. Following this worry, the purpose of this experimental study was to investigate the possibility of using pulp and paper inorganic wastes, named dregs and grits, in bituminous mixtures as aggregate replacement to reduce environmental effects of these wastes disposal. First...

Large amount of wastes is generated every year from the industrial processing of agricultural raw materials. Most of these wastes are used as animal feed or burned as alternative for elimination. However, such wastes usually have a composition rich in sugars, minerals and proteins, and therefore, they should not be considered “wastes” but raw materials for other industrial processes. The presen...

Introduction ______________________________ Disposal of radioactive wastes in streams. Radioactivity budget in streams. ________ Characteristics of radioactive wastes which are discharged into streams______________________________ Sources of wastes.__--__--_--_-_-_______________ Nature of wastes.--__-------___-_______________ Properties and types of radionuclides________ Chemical and physical c...

The increase of healthcare facilities in Shinyanga municipality has resulted in an increase of healthcare wastes, which poses serious threats to the environment, health workers, and the general public. This research was conducted to investigate management practices of healthcare wastes in Shinyanga municipality with a view of assessing health risks to health workers and the general public. The ...