Abstract
Pyrolytic carbon black (CBp) from truck tire pyrolysis is a heterogeneous material with relatively high ash content and a relatively high level of volatile bituminous matter (VBM) due to rubber pyrolysis residues coating the CBp surface. It is shown a method to volatilize and trap the VBM into an activated charcoal collector (Orbo-32 large) during a normal TGA scan of a CBp sample. Then, the VBM was analyzed by electronic absorption spectroscopy and by GC-MS revealing 64 different individual components. The main components identified belong to the class of alkylbenzenes and alkylnaphthalenes compounds. However, the VBM releases volatile components up to 510 °C, while with GC-MS were analyzed only the components that are volatile up to 300 °C and representing only 12% of the total VBM sample. VBM was also studied by TGA-DTG-DTA under N2 and under airflow.
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