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Thermo-Gravimetric Analysis (TGA) of Combustion and Gasification of Styrene-Butadiene Copolymer (SBR)

[+] Author Affiliations
Marco J. Castaldi, Eilhann Kwon

Columbia University, New York, NY

Paper No. NAWTEC13-3149, pp. 19-27; 9 pages
  • 13th Annual North American Waste-to-Energy Conference
  • 13th North American Waste-to-Energy Conference
  • Orlando, Florida, USA, May 23–25, 2005
  • Conference Sponsors: Solid Waste Processing Division
  • ISBN: 0-7918-3756-4
  • Copyright © 2005 by ASME


An investigation has been initiated to determine the effects of various atmospheres (6.9% O2 /N2 , 21% O2 /N2 (air), 30% O2 /N2 , 3% H2 /N2 and pure N2 ) on the efficiency of gasifying or combusting rubber waste to produce synthesis gas or generate steam or power. This paper reports on the findings from a series of TGA experiments at various heating rates on styrene-butadiene copolymer (SBR), which is the main starting component for tire manufacturing. The results indicate that oxygen enhanced atmospheres have a significant effect on increasing combustion efficiency at the tested heating rates. A hydrogen-spiked atmosphere, surprisingly, did not have a significant effect on the gasification rates of SBR at any heating rate; in addition, this atmosphere resulted in a carbon residual that remained in the sample carrier, something that was not observed in the other atmospheres, including pure nitrogen. An unexpected result of the N2 -O2 tests was the development of a plateau in the mass-loss versus temperature curves, at temperatures near 500°C.

Copyright © 2005 by ASME



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