Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Studies on Microbial Treatment for Recycling of Waste Tire

폐타이어 재활용을 위한 미생물 처리

  • Park, Jin-W. (Dept. of Chemical Engineering, Yonsei University) ;
  • Roh, Hyun-S. (Dept. of Chemical Engineering, Yonsei University) ;
  • Kim, Jin-K. (Dept. of Polymer Science & Engineering, Gyeongsang National University) ;
  • Joe, Y.-IL (Dept. of Chemical Engineering, Yonsei University)
  • Published : 1997.12.31
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Abstract

Microbial treatment of the powdered waste tire was studied to recycle the waste tires. Chemoautotrophic acidophilic, iron-oxidizing bacterium was employed to unvulcanize the powdered tires. Biotreated rubber powder was compared to a untreated and a chemically treated powder. The results showed sulfur content of rubber powder(1.33%) were decreased to 1.22% by chemical treatment and 1.12% by microbial treatment for 20 days, 0.88%, for 30 days. One of the problems of the powdered utilization of the waste tires is that rubber powder leads to decrease mechanical properties when it is compounded with other virgin polymers. When tee biotreated powder was compounded with natural rubber, the mechanical properties were less decreased when untreated or chemically treated powder. Therefore, the microbial treatment can be one of useful methods to recycle the waste tire.

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