Recent developments in waste tyre pyrolysis and gasification processes

Mavukwana, Athi-enkosi; Sempuga, Celestin

doi:10.1080/00986445.2020.1864624

Cited by 27 publications

(7 citation statements)

References 110 publications

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“…Waste tires pose disposal challenges in landflls since they do not degrade easily and have a high mass/volume ratio. Although used tires can also be retreaded and reused, the derived tires seem to be of poor quality and at the end of their useful lives, the retreaded tires still end up in landflls [4,5]. Using old tires to generate renewable energy is one of the ways of solving the waste-tire disposal problem [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the various chemical and physical characteristics of their constituent components, it is difcult to reprocess the old tires. Te tires' main component, a cross-linked chemical polymer, cannot be dissolved and is nonfusible, making it diffcult to remold tires into other shapes without signifcantly degrading the polymer [5,6]. In nature, unlike other organic waste, tires do not easily degrade through the action of environmental microbes [8].…”

Section: Introductionmentioning

confidence: 99%

“…Te product characteristics of various pyrolysis processes have already been evaluated under varying operating conditions. For instance, time of residence, temperature, and pressure [5,[10][11][12]. During the pyrolysis process, the organic and volatile material in tires decomposes into other low molecular weight ingredients, liquids, and gases.…”

Section: Introductionmentioning

confidence: 99%

“…Catalysts are used to improve the products of pyrolysis [9,32]. Te type of catalyst (acidic, alkaline, or metallic) and catalyst properties (acid site density, acid strength, and porosity) have a signifcant impact on product distribution and characteristics [1,5,29]. Te primary use of catalysts in tire pyrolysis is to reduce product distribution compared to noncatalytic thermal pyrolysis [5,31].…”

Section: Introductionmentioning

confidence: 99%

“…Te type of catalyst (acidic, alkaline, or metallic) and catalyst properties (acid site density, acid strength, and porosity) have a signifcant impact on product distribution and characteristics [1,5,29]. Te primary use of catalysts in tire pyrolysis is to reduce product distribution compared to noncatalytic thermal pyrolysis [5,31]. Te selection of a catalyst is heavily infuenced by the oil's potential applications and the required product qualities.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Effects of a Sodium Carbonate Catalyst on Calorific Value, Flash Point, Cetane Index, and pH of Tire Pyrolysis Oil

Omwoyo

Mengo

2023

International Journal of Chemical Engineering

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The large volume of tire waste generated globally poses a major waste disposal problem. In the natural environment, disposed of tires do not degrade easily, but they can be processed through pyrolysis, to get char, gas, and oil. In this study, tire pyrolysis was done using 0.00%, 1.50%, 2.50%, 5.00%, 7.50%, and 10.00% sodium carbonate catalyst in the feed material to produce oil. An evaluation of the effects of the catalyst on the cetane index, calorific value, pH level, and flash point of tire pyrolytic oil (TPO) was carried out since these are the essential properties in relation to safety in its handling and efficiency in engine performance and operation. There was a decrease in the calorific value by 3.09%, the flash point by 37.25%, and the cetane index by 71.2% with increasing catalyst percentage, while the pH was found to increase by 19.78% (between 0.00 and 5.00% sodium carbonate catalysts) and then decreased when more than 5.00% of the catalyst was employed. These results will provide theoretical information that will guide its handling and usage as fuel.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Effects of a Sodium Carbonate Catalyst on Calorific Value, Flash Point, Cetane Index, and pH of Tire Pyrolysis Oil

Omwoyo

Mengo

2023

International Journal of Chemical Engineering

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Turning waste tyres into carbon electrodes for batteries: Exploring conversion methods, material traits, and performance factors

Egun,

Liu,

Zheng

et al. 2024

Carbon Energy

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Waste tyres (WTs) are a major global issue that needs immediate attention to ensure a sustainable environment. They are often dumped in landfills or incinerated in open environments, which leads to environmental pollution. However, various thermochemical conversion methods have shown promising results as treatment routes to tackle the WT problem while creating new materials for industries. One such material is WT char, which has properties comparable to those of carbon materials used as an active electrode material in batteries. Therefore, a systematic review of the various thermochemical approaches used to convert WTs into carbon materials for electrode applications was conducted. The review shows that pretreatment processes, various process routes, and operating parameters affect derived carbon properties and its respective electrochemical performance. WT‐derived carbon has the potential to yield a high specific capacity greater than the traditional graphite (372 mAh g−1) commonly used in lithium‐ion batteries. Finally, the review outlines the challenges of the process routes, as well as opportunities and future research directions for electrode carbon materials from WTs.

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Waste Tyre Environmental Impacts and Life Cycle Assessment Review for Reuse, Material Recovery, and Energy Recovery Strategies

Nkosi,

Belaid,

Nhubu

et al. 2024

Environmental Science and Engineering

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Recent developments in waste tyre pyrolysis and gasification processes

Cited by 27 publications

References 110 publications

The Effects of a Sodium Carbonate Catalyst on Calorific Value, Flash Point, Cetane Index, and pH of Tire Pyrolysis Oil

The Effects of a Sodium Carbonate Catalyst on Calorific Value, Flash Point, Cetane Index, and pH of Tire Pyrolysis Oil

Turning waste tyres into carbon electrodes for batteries: Exploring conversion methods, material traits, and performance factors

Waste Tyre Environmental Impacts and Life Cycle Assessment Review for Reuse, Material Recovery, and Energy Recovery Strategies

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