Abstract
ABSTRACT Disposal of waste tyres is a major concern today. Among the various recycling techniques available, pyrolysis is one of the eco-friendly processes that transforms waste tyres into oil and gas with carbon-rich residue. The aim of the study is to determine the influence of nano catalyst derived from eggshells on the yield and composition of the products from pyrolysis. The nano catalyst is prepared by size reduction and calcination of waste eggshells which is further characterized and used to catalyze pyrolysis process. It is observed that the yield of liquid fuel from the resultant product increases with a considerable decrease in sulfur content which is because of its entrapment and entrainment in solid and gaseous products. Similarly, a considerable decrease in the process temperature is also observed in which a maximum oil yield of 95 wt% was obtained at 455ºC when compared to the total oil recovered at 550°C. On the other hand, the same recovery was obtained at 496ºC in thermal pyrolysis.
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