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Pyrolysis, the chemical cracking of organic materials such as polymeric materials represents an innovative technology to recover resources contained in automobile shredder residues (ASR). In this study the technical capabilities, economic viability and environmental impact of pyrolysis as applied to ASR has been investigated. Based upon data provided by pyrolysis equipment suppliers, the pyrolysis of ASR appears to be a viable option to deal with the growing quantities of this material currently being produced. However, the selection of the most appropriate pyrolysis technology is dependant upon local needs and requirements.

Field tests in sandy loam and clay soils were conducted with simple vertical tillage tools up to a speed of 18 ms-1 (65 km h-1) to determine the influence of soil types on the high-speed performance of tillage tools and the detailed relationship between draft and speed. A non-linear, dynamic finite element method (FEM) was used to simulate the variation in tool draft witii cutting speed. The prospects of high-speed tillage were discussed on tie basis of these experimental and analytical results.