Preliminary study of the reclaimation of ground tyre rubber by Saccharomyces cerevisiae R1

TAO ZiYi1;WANG YaQin1;ZHAO SuHe2;LI YuanHu2

Journal of Beijing University of Chemical Technology ›› 2011, Vol. 38 ›› Issue (6) : 76-82.

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Journal of Beijing University of Chemical Technology ›› 2011, Vol. 38 ›› Issue (6) : 76-82.
生物技术与环境工程

Preliminary study of the reclaimation of ground tyre rubber by Saccharomyces cerevisiae R1

  • TAO ZiYi1;WANG YaQin1;ZHAO SuHe2;LI YuanHu2
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Abstract

The yeast species S. cerevisiae R1 has the capability to recycle waste rubber. However the many toxic additives in rubber have a significant inhibiting effect on the growth of S. cerevisiae R1, as shown by our toxicity tests. Ethanol leaching of the rubber material can remove some of these toxic additives, reducing the adverse impact on the growth of the microorganism. After 132 hours of regeneration, a remarkable decrease in crosslink density, increase in swelling ratio(4.6%), and better physical properties were observed for the resulting styrene butadiene rubber/devulcanized ground tyre rubber (SBR/DGTR) blend, compared with the corresponding values for untreated SBR/GTR. Scanning electron microscopy images of SBR/DGTR also showed an improvement in interfacial binding force and good adhesion. X-ray photoelectron spectroscopy showed that there was no obvious change in carbon content, but the content of sulfur decreased markedly(23.86%), indicative of a significant desulfurization effect. 

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TAO ZiYi1;WANG YaQin1;ZHAO SuHe2;LI YuanHu2. Preliminary study of the reclaimation of ground tyre rubber by Saccharomyces cerevisiae R1[J]. Journal of Beijing University of Chemical Technology, 2011, 38(6): 76-82

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