All auto shredding: evaluation of automotive shredder residue generated by shredding only vehicles.

摘要: A well developed infrastructure exists for the reuse and recycling of automotive parts materials. At end a vehicle's useful life many are removed sold fluids recovered or proper disposal. What remains is shredded, along with other metal bearing scrap such as home appliances, demolition debris process equipment, metals separated out recycled. The remainder vehicle materials call shredder residue which ends up in landfill. As energy natural resources becomes more treasured, increased effort has been afforded to find ways reduce consumption minimize use our limited resources. Many found could be help offset material consumption. For example, content plastics rubbers currently landfilled equivalent 16 million barrels oil per year. However, United States, materials, primarily polymers, cannot recycled due current regulatory barriers preclude re-introduction into commerce certain because residual contamination substances concern (SOCs) polychlorinated biphenyls (PCBs). Themore » source PCBs not understood. Old transformers, capacitors, white goods ballasts from lighting fixtures likely contributing factors. project was designed evaluate whether vehicles varying age manufacturing origin contribute PCB residue. Additionally, determine if there any trends composition varied groups. This information would aid future recovery facility strategy design. test utilized newly installed plant shred four categories automobiles. were defined by company location. Each category processed individually through resulting analyzed its presence leachable metals. results show that all tested significant contributors It evident cadmium levels have decreased newer vehicles. each similar others. In addition, these compositions approximately equal typical residues, materials.« less