Automotive Waste

16 May 2017
asr

THE PROBLEM

  • Automotive Shredder Residue (ASR): ASR is the shredded noxious waste left behind after the high value ferrous and non-ferrous metals are recovered when an end-of-life vehicle (ELV) is scrapped. Its complexity means almost all ASR is destined for landfills worldwide, where it poses a significant risk of environmental contamination due to toxic leachate. Typically, it includes a complex mix of various plastics, rubber, glass (including laminated safety glass, currently not recyclable) and residual metals. With about 1.4 billion cars are on the world’s road today, and projections of a global fleet of over 1.7 billion cars by 2030, ASR is a serious problem, as for every car scrapped some 100-200kgs of ASR requires disposal. 

THE SOLUTION

  • The SMaRT Centre is transforming ASR by using high temperature reactions with promising results. Examples of outputs include: Bonded ceramic coating on steel, titanium nitride (additive in the manufacture of cutting tools etc.), titanium carbide, commercially useful gases, lightweight aggregates (construction) and  ferro-silicon alloys.

Academic references:  

  1. Mohannad, M., Pahlevani, F., Maroufi, S., Liu, Z., Sahajwalla, V. (2017). Waste conversion into high-value ceramics: Carbothermal nitridation synthesis of titanium nitride nanoparticles using automotive shredder waste. Journal of Environmental Management 188, 32-42.
  2. Handoko, W., Pahlevani, F., Emmanuelawati, I., Sahajwalla, V. (2016). Transforming Automotive Waste into TiN and TiC Ceramics. Materials Letters, 176, 17–20.
  3. Pahlevani, F., Kumar, R., Gorjizadeh, N., Hossain, R., Cholake, S. Privat K., Sahajwalla, V., Enhancing steel properties through insitu formation of ultrahard ceramic surface, Scientific Reports 6, article number 38740, published Dec 8, 2016, https://www.nature.com/articles/srep38740
  4. Mayyas, M., Pahlevani, F., Handoko, W., Sahajwalla, V. (2016). Preliminary investigation on the thermal conversion of automotive shredder residue into value-added products: Graphitic carbon and nano-ceramics. Waste Management, 50, 173–183
  1. Mayyas, M., Mayyas, M., Pahlevani, F., Liu, Z., Rajaro, R., Sahajwalla, V. (2016). From automotive shredder residue to nano-ceramics and graphitic carbon – Thermal degradation kinetics. Journal of Analytical and Applied Pyrolysis, 120, 60-74.