Recovery of used products is receiving much attention recently due to growing environmental concerns.In this paper, we address the carbon footprint basedon problem arising in closed-loop supply chain where returned products are collected from customers. These returned products can either be disposed or be remanufactured to be sold as new ones again. Here, we formulate a comprehensive closed-loo...

Construction waste is considered as a major contributor of solid wastes in municipal landfills. Construction, renovation, and demolition (CRD) waste generated by the Canadian construction industry accounts for 27% of total municipal solid waste disposed in landfills. However, many researchers stated that 75% of what the construction industry generates as waste has a residual value and therefore...

Food waste which accounts for approximately 30 percent of urban garbage was collected from selected cities of Korea and treated with EM in household recycling and demonstration programs. The quantity of garbage was reduced significantly with no malodors commonly associated with refuse fermentation. The fermented food waste can be used beneficially as an organic fertilizer for crop production. T...

THE CITY OF COLOMBO , which has a resident population of little over half a million, and a total area of 3731 hectares, is administered by a Municipal Council. The collection and disposal of solid waste generated within the City is a function of the Municipal Council, and is carried out by its six district offices. The Colombo Municipal Council (CMC) collects around 500 metric tons of solid was...

Two of the main pillars of the EU waste collection policy are the Proximity Principle and Self-Suffi ciency Principle. According to those, waste should be disposed as close as possible to where it has been produced. The effect of such provision is to increase the market power of local disposers, with possible undesirable consequences for other firms in the vertical chain. We show through a simp...

BACKGROUND The increase in solid waste generated per capita in Africa has not been accompanied by a commensurate growth in the capacity and funding to manage it. It is reported that less than 30% of urban waste in developing countries is collected and disposed appropriately. The implications of poorly managed waste on health are numerous and depend on the nature of the waste, individuals expose...

The University of Texas Medical Branch (UTMB) at Galveston is a large academic medical center with about 12,700 employees, 350 radioisotope research labs and 200 permitted radioactive materials users. Consequently, UTMB generates a fairly large amount of radioactive waste. The majority of this waste contains short-lived radionuclides, such as 32P, 33P, and 35S, which are held for decay and then...

Many cities in Africa, Asia, and Latin America face serious problems managing their wastes. Two of the major problems are the insufficient collection and inappropriate final disposal of wastes. Despite spending increasing resources, many cities – particularly in Africa and Asia – collect less than half of the waste generated. Most wastes are disposed of in open dumps, deposited on vacant land, ...

Many cities in Africa, Asia, and Latin America face serious problems managing their wastes. Two of the major problems are the insufficient collection and inappropriate final disposal of wastes. Despite spending increasing resources, many cities – particularly in Africa and Asia – collect less than half of the waste generated. Most wastes are disposed of in open dumps, deposited on vacant land, ...