Waste tires pyrolysis oil as a source of energy: Methods for refining

Toteva, Vesislava; Stanulov, K.

doi:10.1177/1477760619895026

Cited by 17 publications

(15 citation statements)

References 59 publications

(73 reference statements)

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“…Narani et al ( 2020 ) concluded that textile fibers from ELTs could enhance the geotechnical characteristics of the expansive soil. Toteva and Stanulov ( 2020 ) explored environmentally friendly applications of ELT pyrolysis.…”

Section: Resultsmentioning

confidence: 99%

End-of-life tire management: a critical review

Dabić-Miletić

Šimić

Karagöz

2021

Environ Sci Pollut Res

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Environmental and social awareness are the key elements of the sustainable tire industry. End-of-life tire (ELT) waste flow is an important environmental problem worldwide since it produces severe air, water, and soil pollution issues. Significant advancements have been made in ELT management in the last few years. As a result, ELTs should not only be regarded as waste but also as a source of environmentally friendly materials. Besides, sound ELT management has vital importance for circular economy and sustainable development. Over the last decade, ELT management has attracted many researchers and practitioners. Unfortunately, a comprehensive review of the ELT management area is still missing. This study presents the first critical review of the whole ELT management area. It aims to present an extensive content analysis overview of state-of-the-art research, provide its critical analysis, highlight major gaps, and propose the most significant research directions. A total of 151 peer-reviewed studies published in the journals between 2010–2020 are collected, analyzed, categorized, and critically reviewed. This review study redounds comprehensive insights, a valuable source of references, and major opportunities for researchers and practitioners interested in not only ELT material flow but also the whole waste management area. Graphical abstract

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Section: Resultsmentioning

confidence: 99%

End-of-life tire management: a critical review

Dabić-Miletić

Šimić

Karagöz

2021

Environ Sci Pollut Res

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“…According to the rubber composition in the waste tires (WT), the HV of waste tire pyrolysis oil (WTPO) is ca. 30 to 42 MJ/kg, which is competitive with other conventional fuel types (HV diesel = 47 MJ/kg and HV gasoline = 45 MJ/kg), especially lignite coal and biomass, which have lower caloric values at 26.8 and 16.7 to 19.0 MJ/kg, respectively 3‐5 …”

Section: Introductionmentioning

confidence: 99%

“…30 to 42 MJ/kg, which is competitive with other conventional fuel types (HV diesel = 47 MJ/kg and HV gasoline = 45 MJ/kg), especially lignite coal and biomass, which have lower caloric values at 26.8 and 16.7 to 19.0 MJ/kg, respectively. [3][4][5] Since the direct burning of WT generates the toxic gases to be harmful for human or animal health and environment, 6 the transformation of WT via pyrolysis is a more environmental friendly process to produce high yield of alternative liquid fuels up to 38%. 7 However, the increasingly stringent environmental policies to control the amounts of aromatics and sulfur or nitrogen species presented in the fuels limit the utilization of untreated WTPO.…”

Section: Introductionmentioning

confidence: 99%

Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

Kingputtapong

Chanlek

Poo‐arporn

et al. 2022

Intl J of Energy Research

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Summary This research aimed to improve the quality of waste tire pyrolysis oil (WTPO) via hydrogenation to eliminate polycyclic aromatic hydrocarbons (PAHs), which are classified as toxic compounds or precursors to induce the formation of particulate matter. Given the presence of organosulfurous compounds in WTPO, this research was consisted of two steps. First, the hydrogenation of naphthalene, a model PAH compound, was used to screen for suitable promoters [molybdenum (Mo), tungstate (W), and platinum (Pt)] for nickel‐supported gamma‐alumina (Ni/γ‐Al2O3) catalyst to provide a high sulfur tolerance and high PAH hydrogenation efficiency. Second, the obtained suitable catalysts were applied for the hydrogenation of 50 wt% WTPO solution in decane containing 15 982 ppm PAHs and a 0.75 wt% sulfur content. Although the NiPt/γ‐Al2O3 catalyst exhibited the highest performance with 83.8% naphthalene conversion under 40 bar initial H2 pressure at 350°C for 6 hours, it was less tolerant to the presence of thiophene, one of the organosulfurous compounds found in WTPO. Thus, the NiMo/γ‐Al2O3 and NiW/γ‐Al2O3 catalysts were selected for WTPO hydrogenation. The PAHs hydrogenation and hydrodesulfurization occurred simultaneously in both catalytic systems. Under 50 bar initial H2 pressure at 350°C, the NiMo/γ‐Al2O3 catalyst had a higher ability for hydrodesulfurization (98.4% maximum sulfur removal) than hydrogenation of PAHs (66.0% removal of PAHs), whereas NiW/γ‐Al2O3, with lower acidity, showed a preference for hydrogenation of PAHs (71.1% removal of PAHs) with a lower hydroisomerization efficiency (74.2% sulfur removal). Moreover, the chemical structure of PAHs affected the ability to be eliminated by hydrogenation. PAHs having unsubstituted rings could be easily hydrogenated, while the removal of PAHs containing alkyl substituents in both aromatic rings required severe reaction conditions due to their high steric hindrance for adsorption onto the catalyst active sites.

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“…It was predicted that the number of waste tires (WTs) would exceed 1.6 billion in 2024, and the increase would reach 20% by 2030 . Various economic and environmental problems were aggravated due to the increasing quantity of WTs and inappropriate recycling methods in the long term. − Therefore, it is significant for WT disposal to explore effective, profitable, and environmentally friendly methods.…”

Section: Introductionmentioning

confidence: 99%

Integrated Assessment of Waste Tire Pyrolysis and Upgrading Pathways for Production of High-Value Products

Zhang²,

Chen³

et al. 2022

ACS Omega

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Waste tire pyrolysis has received increasing attention as a promising technology recently due to the shortage of fossil resources and the severity of environmental impact. In this study, the process of waste tire pyrolysis and upgrading to obtain high-value products was simulated by Aspen Plus. Also, based on life cycle assessment, the indexes of energy, environmental, economic, and comprehensive performance were proposed to evaluate different high-value pathways. Results demonstrate that the integrated system of waste tire pyrolysis, pyrolytic oil (TPO) refining, and pyrolytic carbon black (CBp) modification has higher energy efficiency than the independent system of TPO refining, with an improvement rate of 2.6%. Meanwhile, the resource-environmental performance of the integrated system is better. However, combined with the economic benefit, the independent system is more comprehensively beneficial, with the index of comprehensive performance (BEECR) of 0.94, which increases by 3.3% compared with the integrated system. Furthermore, the comparisons of different improved high-value paths based on the independent system as the benchmark indicate that the pathway of promoting sulfur conversion during pyrolysis to reduce the sulfur content in TPO can increase the BEECR from 0.94 to 1.064, with the growth of 13.2%. Also, the physical modification of CBp to reduce the production cost and environmental impact has better performance of BEECR, increasing by 20.2%. The final sensitivity analyses show that the combined improved high-value case established by the abovementioned two paths can achieve a favorable benefit in a wide range of crude oil and waste tire prices and the environmental tax.

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Waste tires pyrolysis oil as a source of energy: Methods for refining

Cited by 17 publications

References 59 publications

End-of-life tire management: a critical review

End-of-life tire management: a critical review

Production of cleaner waste tire pyrolysis oil by removal of polycyclic aromatic hydrocarbons via hydrogenation over Ni‐based catalysts

Integrated Assessment of Waste Tire Pyrolysis and Upgrading Pathways for Production of High-Value Products

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