E-WASTE RESEARCH at Jackson State University

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TCLP Test of E-waste Components

Dynamic Leaching Test of E-waste Components

Landfill Simulation Test

Biotoxicity Test of Materials in Crystal Liquid Displays

Treatment of E-waste for Safe Disposal



Treatment of E-waste for Safe Disposal

The study has found the most toxic components in PCs are the printed wire board (PWBs). The recycling of PWBs has not become commercially viable because of the lack of cost-effective recycling technologies. Before effective and economical recycling technologies emerge, landfilling remains to be the most predominant way to dispose the E-waste while waste-to-energy facilities burn only a small amount. Disposing E-waste as hazardous waste in hazardous waste landfills is not generally practical because (1) hazardous waste landfills are not available in all places; long-distance transportation is needed in many areas; (2) disposal of the E-waste as hazardous waste is much more costly than as ordinary waste; and (3) the number and space of hazardous waste landfills is small; if much of the E-waste goes to hazardous waste landfills, the nation will run out of hazardous landfill space, making the disposal of the conventional hazardous waste difficult. Co-disposal of the E-waste with ordinary MSW in sanitary landfills is a promising solution if the E-waste can be properly treated and the leaching toxicity characteristics significantly reduced.    

High-pressure compaction and cement solidification have been explored as possible treatment methods for rendering the PWBs into safe forms for co-disposing with MSW. The results will be published when the tests are finished.


                              Compacted PWB                      Cement-solidified PWB