Method to assess biomass in scrap tires: Spanish cement sector as a case study

The objective of the study is to develop a methodology to assess natural rubber content in scrap tires. Sampling and statistical methodology have been implemented in order to define an undifferentiated tire which is independent of brand tires or light or heavy tires. Sampling preparation, thermogravimetry analysis and statistical methodology have been implemented, and the method was validated using calibrated samples. It allows to establish a simple methodology to determine the fraction of biomass in the alternative fuel under study. According to the results achieved, the proposed methodology would be used in facilities which use scrap tires as fuel. This research simplifies the determination of biomass content in scrap tires in a specific region or country, and it could be a reference to be consulted by stakeholders.