The identification and classification of plastics plays an important role in waste management and recycling processes. Present electrical and optical sorting techniques lack the required resolution for accurate identification in a high throughput manner for a diverse set of plastics commonly found in municipal waste. In this work a multi-spectral infrared spectroscopic technique is employed to ...

This study employed contingent valuation method to estimate the willingness to pay (WTP) of the households to improve the waste collection system in Kuala Lumpur, Malaysia. The objective of this study is to evaluate how household WTP changes when recycling and waste separation at source is made mandatory. The methodology consisted of asking people directly about their WTP for an additional wast...

In this paper the environmental problems related with the discarded electronic appliances, known as e-waste, are reviewed. Moreover, the current and the future production of e-waste, the potential environmental problems associated with their disposal and management practices are discussed whereas the existing e-waste management schemes in Greece and other countries (Japan, Switzerland) are also...

To reduce the negative impact of informal recycling on environment, we consider competition in industry to explore manufacturer's collection channel choice and optimal points-exchange level. In this paper, a closed-loop supply chain model including manufacturer an recycler (IR) is constructed. Stackelberg game theory used as theoretical guide. addition, study decision problem under profit maxim...

<p style='text-indent:20px;'>Considering the quality of recycled products, we develop a game model multi-level competitive recycling and remanufacturing supply chain with two manufacturers multiple recyclers. Being focus on mainstream models, namely manufacturer-recycler cooperation manufacturer-led Stackelberg model, explore connection between optimal pricing decisions performance levels...

This paper identifies instituional arrangmenets and characteristics which either facilitate or impede regional cooperation in municipal solid waste management. The research draws upon an examination of five solid waste regions formed in Tennessee in 1992 in response to state legislation requiring development of comprehensive solid waste management plans. Characteristics and institutional arrang...

BACKGROUND AND OBJECTIVES Dengue is an important public health problem in Yogyakarta city, Indonesia. The aim of this study was to build an innovative community-centered dengue-ecosystem management intervention in the city and to assess the process and results. METHODS For describing the baseline situation, entomological surveys and household surveys were carried out in six randomly selected ...

Background Environmental regulations on medical waste incineration have become more stringent at the same time as landfill capacities are diminishing in many parts of the country. These two circumstances are leading many healthcare facilities to reevaluate their medical waste generation and disposal practices. Although the typical healthcare waste stream can include infectious, radioactive, and...

Gasification technology is by no means new: in the 1850s, most of the city of London was illuminated by "town gas" produced from the gasification of coal. Nowadays, gasification is the main technology for biomass conversion to energy and an attractive alternative for the thermal treatment of solid waste. The number of different uses of gas shows the flexibility of gasification and therefore all...