Effect of temperature and heating rate on limonene production from waste tyre pyrolysis

Mkhize, Ntandoyenkosi Malusi; Gryp, Percy van der; Danon, B.; Görgens, Johann F.

doi:10.1016/j.jaap.2016.04.019

Cited by 74 publications

(28 citation statements)

References 27 publications

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“…% for TT and similarly, the PCT at 36.2 wt. % (Table 2), is comparable to the previously reported work (Mkhize et al, 2016). This is not surprising since the fixed carbon mainly in the form of the carbon black added to the tyre compounding is likely to be the same for both the TT and the PCT.…”

Section: Thermogravimetric Analysissupporting

confidence: 88%

Pyrolysis of Various Tyre Types: Characteristics and Kinetic Studies Using Thermogravimetric Analysis

Iwarere

Mkhize

2019

Detritus

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The present study entails investigating the fractional devolatilisation effect on the passenger car tyre (PCT) and truck tyre (TT). Thermograms and their first derivatives are used to profile devolatilisation of the passenger and truck tyres rubbery fractions. Both tyre types rubbery fractions consist of mainly natural rubber (or polyisoprene, NR) and synthetic rubber (polybutadiene, BR and styrene-butadiene, SBR). The NR is relatively significant compared to the BR and SBR in the TT. In the PCT, the rubbery fraction showed equal distributions between the NR and BR-SBR. Unlike conventional waste resources pyrolysis processes where the aim is towards energy recovery, novel pyrolysis is designed based on the characteristics of the materials in order to promote the production of the valuable products in addition to the energy recovery. Therefore, kinetic mechanisms pathways of the rubbery fraction devolatilisation from waste tyre pyrolysis are studied and models are developed. Model-free methods, such as Friedman and Kissinger are used to model the kinetics parameters.

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Section: Thermogravimetric Analysissupporting

confidence: 88%

Pyrolysis of Various Tyre Types: Characteristics and Kinetic Studies Using Thermogravimetric Analysis

Iwarere

Mkhize

2019

Detritus

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“…These values are very similar to the ones obtained in this experiment. Thus, it is very likely that the first weight loss peak is mainly attributed to the cracking of natural rubber, and the second one to the cracking of synthetic rubber 6 . It was also observed that the TG curve displayed a slight fluctuation and limited amplitude, probably due to the loss of a small amount of water.…”

Section: Experimental Results and Analysismentioning

confidence: 97%

Copyrolysis of tire powder and engine oil: Reaction behavior and kinetics

Luo

Wang

et al. 2020

Asia-Pacific J Chem Eng

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In this work, thermogravimetric (TG) and Fourier‐transform infrared spectroscopy (FTIR) were used to explore changes in the cracking process when engine oil was mixed with waste tires. The results presented herein provide a theoretical basis and technical support for the development of potential applications of tire and engine oil copyrolysis. According to the TG analysis, it was found that the pyrolysis efficiency significantly increased with increasing ratios of engine oil in the blending. The Coats–Redfern method was used to determine the kinetics of the copyrolysis reaction. It was found that the addition of engine oil reduced the activation energy of natural rubber and synthetic rubber decomposition. FTIR analysis indicated that the addition of engine oil can improve the quality of cracked products by increasing the composition of combustible gas (CH4) in the cracked products. This study demonstrated that the pyrolysis of tires and engine oils display a strong interaction, and copyrolysis can significantly overcome the limitations of single tire cracking.

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“…There has been some research presented in the literature that indicates the effects of catalytic pyrolysis on three main pyrolysis products: carbon black, pyrolytic oil, and pyrolytic gas, as well as efforts to use them directly. Several investigations have revealed that the oil includes varying quantities of important aromatic and aliphatic chemicals such as DL‐limonene, benzene, toluene, and xylenes, which can be used directly as light aromatic alternatives for traditional fuels or petrochemical biofuel 77,78 . The concentration of CO and CO 2 in tire pyrolysis gases, on the other hand, is attributable to the thermal breakdown of oxygenated additives such as extender oils or stearic acid, as well as charges such as CaCO 3.…”

Section: Recent Studies On Elt Managementmentioning

confidence: 99%

Assessment of waste‐to‐energy potential of ELT management: An actual case study for Erzincan

Gungor

Tozlu

Arslantürk

2021

Env Prog and Sustain Energy

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End‐of‐life tires (ELTs) and their decomposition are becoming a major environmental issue in the local region as a result of economic and technological challenges. Despite this, ELT management is gaining popularity as an advanced function for treating tires to obtain char, oil, and gas products using pyrolysis. The main goal of this article is to integrate data from an actual recycling plant with the activities of pyrolysis products and their physical properties in the literature. This article presents energy potentials and basic applications of pyrolysis products as well as advances in the current situation in ELT management in the world. Accordingly, an existing ELT management in Erzincan, Turkey is explained in detail by considering the available energy recovery and material treatment activities. In this plant, which has an installed power capacity of 12 MW, approximately 25 tons of pyrolytic oil, 10.7 tons of pyrolytic gas, 24 tons of carbon black and, 10.4 tons of steel are produced daily. The calorific values of carbon black and pyrolytic oil for the products leaving the pyrolysis plant are close to the values in the literature, which is promising. In the plant, the overall thermal efficiency of the system and the engine is found to be 26.34% and 51.24%, respectively. On the other hand, to supply additional power to the plant utilizing exhaust gas discharged to the atmosphere, some thermodynamic models can be developed; additionally, more rational values can be obtained through thermoeconomic and optimization.

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Effect of temperature and heating rate on limonene production from waste tyre pyrolysis

Cited by 74 publications

References 27 publications

Pyrolysis of Various Tyre Types: Characteristics and Kinetic Studies Using Thermogravimetric Analysis

Pyrolysis of Various Tyre Types: Characteristics and Kinetic Studies Using Thermogravimetric Analysis

Copyrolysis of tire powder and engine oil: Reaction behavior and kinetics

Assessment of waste‐to‐energy potential of ELT management: An actual case study for Erzincan

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