Abstract
Recycling of solid waste is one of the most valuable method which is used in worldwide for integral solid waste management. Waste tires are considered to be a source of energy and valuable chemical products. In this study waste tire samples of mixed types (passenger, truck, and heavy vehicles etc.) were decomposed thermally in a fixed bed reactor made up of stainless steel placed inside an electrical heater. Thermal pyrolysis on tire waste samples with (1-2) cm of particle size was carried out at temperatures of 330 ᵒC, 430ᵒC, 530ᵒC, and 630 ᵒC under Argon flow rate of 0.5 L/min and retention time of 15 min to study the effect of temperature on the distribution of pyrolysis products yield. Three main products were obtained by tire pyrolysis pyro oil, gas, and solid residue. Chemical compositions of pyrolysis oil product were characterized by Gas chromatography mass and Fourier transform infrared spectroscopy analyses, it is a complex mixture of alkane, alkene, cycloalkane, cycloalkane, alcohol, ester, and aromatic compounds which are preferable in fuel. If found that a limonene compound occupies the largest proportion of the oil product which is considered as a more valuable compounds.
Highlights
Solid waste management (SWM) is required and challenging duty in worldwide countries [1].Waste tires are the most challenging risky waste which threating countries
OC, the pyrolysis oil yield increased from 33.5 wt. % at 330 oC to highest value of 51.7 wt. % at temperature of 630 oC, while the solid residue was reduced from 57.8 wt. % to 32 wt. % and the yield of gas product, increased linearly from 8.7 wt. % at 330 oC to 16.3 % at temperature of 630 oC
The increasing in the yield of oil and the reduction in the yield of solid product with the temperature increases is compatible with [25] who investigated the thermal pyrolysis of (WT) at temperatures of 350 oC to 750 oC, and [26] at temperature of 500 oC to 800 oC
Summary
Solid waste management (SWM) is required and challenging duty in worldwide countries [1]. Waste tires are the most challenging risky waste which threating countries. They can be defined as tires which exceeding the life of their production or that can no longer safe to be use [2]. Waste tire is a polymer solid waste which is non- biodegradable due to their complex mixture of chemicals, which include mainly natural and synthesis rubber, carbon black, organic and inorganic compounds, and steel cord [5]. Management of waste tire still be increasing the crisis in most countries due to absence of active legislations, inadequate funding, and poor organization [6]. The huge amount of waste generated currently required for an urgent move towards a circular economy systems, reducing generation of waste and eliminating the extraction of non‐renewable resources [7]
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