In order to reduce the elemental species produced in recycling and melting of aluminum scrap improve quality pure alloys, it is necessary classify different grades before melting. For problem classifying scrap, most existing studies are conducted using laser-induced breakdown spectroscopy for identification classification, which requires a clean flat metal surface enormous equipment costs. this...

DEFINITIONS NOTE: These definitions are for your general use and may differ from those applied by various recyclers. Verify the meaning of terms with the respective recycler. APPLIANCES/WHITE GOODS: Refrigerators, washers and dryers, and other household machinery with mostly metal content. Scrap metal dealers are not interested in appliances primarily composed of plastic. BALE: A densified and ...

Based on fieldwork in an informal scrap recycling workshop, this article explores how unregulated electronic waste (e-waste) handling activities Dar es Salaam expose workers to toxic substances as part of their livelihoods. These economic are situated the urban landscape within surrounding global flows e-waste and demonstrate reflect seek mitigate exposures they encounter daily life. The concep...

The issue of automobile recyclability is a problem with complex ramifications for car makers world-wide. Confronted with increasingly stringent fuel economy, emissions, and safety standards, recyclability is an attribute which can limit the ability of the automaker to meet these other goals economically. Nevertheless, social and political pressures upon the industry require that it responds to ...

Despite the mobility enabled by the plethora of technological tools such as laptops, PDA and cell phones, horizontal flat surfaces are still extensively used and much preferred for on-the-move face-to-face collaboration. Unfortunately, when digital documents need to be shared during collaboration, people are still mostly constrained to display surfaces that have been designed for single users, ...

This paper studies a single-stage production system, two-stage production system where specification limits are designed for inspection. When quality characteristics fall below a lower threshold or above an upper threshold, a decision is made to rework or scrap the item. The target is to determine the optimum target for a process based on rework or scrap costs. In contrast to previous studies, ...