فهرست نشریات علمی دسترسی آزاد ایران

The study investigates the effect of operating parameters (temperature, particle size, heating rate, and nitrogen flow rate) on the bio-oil yield produced from the co-pyrolysis of rice husks and waste tires. The quality and quantity of bio-oil produced in different ratios of rice husks to waste tires were also examined. The co-pyrolysis process achieved optimal performance under the following conditions: a temperature of 500°C, a feedstock particle size of 1 mm, a heating rate of 50°C/min, and a gas flow rate of 2 L/min. Experiments were conducted using varying mixing ratios of rice husk and waste tires in a fixed-bed reactor. The maximum liquid yield (64.7 wt.%) was observed at a tire-to-rice-husk ratio of 3:1. Incorporating waste tires into the rice husk feedstock enhanced the fuel properties of the resulting bio-oil. Specifically, the higher heating value (HHV) increased from 27.2 to 41.4 MJ/kg, while the density and viscosity decreased, bringing the oil closer to the characteristics of conventional diesel. Furthermore, the co-pyrolysis oil exhibited greater stability, with a notable reduction in aldehyde content. The addition of waste tires also minimized the need for extensive post-processing to convert the liquid product into a functional fuel. These findings demonstrate that co-pyrolysis is an effective strategy for the simultaneous valorization of both waste materials.