Production of liquid hydrocarbons, carbon nanotubes and hydrogen rich gases from waste plastic in a multi-core reactor

Bajad, Ganesh S.; Vijayakumar, R.; Gupta, Ajay G.; Jagtap, Vishakha; Singh, Yogendra pal

doi:10.1016/j.jaap.2017.04.016

Cited by 30 publications

(18 citation statements)

References 35 publications

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“…The membranes contained no catalyst and acted as a template for carbon nanotube growth with controlled geometry. Bajad et al [117] developed a novel reactor design using a central core heating system where pyrolysis of plastic waste was carried out in the outer core and catalysis in the inner core of the reactor. The reactor was designed to maximise the production of CNTs, hydrogen-rich syngas and liquid hydrocarbons.…”

Section: Reactor Design For Carbon Nanotube Production From Waste Plamentioning

confidence: 99%

Hydrogen and Carbon Nanotubes from Pyrolysis-Catalysis of Waste Plastics: A Review

Williams

2020

Waste Biomass Valor

181

108

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More than 27 million tonnes of waste plastics are generated in Europe each year representing a considerable potential resource. There has been extensive research into the production of liquid fuels and aromatic chemicals from pyrolysis-catalysis of waste plastics. However, there is less work on the production of hydrogen from waste plastics via pyrolysis coupled with catalytic steam reforming. In this paper, the different reactor designs used for hydrogen production from waste plastics are considered and the influence of different catalysts and process parameters on the yield of hydrogen from different types of waste plastics are reviewed. Waste plastics have also been investigated as a source of hydrocarbons for the generation of carbon nanotubes via the chemical vapour deposition route. The influences on the yield and quality of carbon nanotubes derived from waste plastics are reviewed in relation to the reactor designs used for production, catalyst type used for carbon nanotube growth and the influence of operational parameters.

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Section: Reactor Design For Carbon Nanotube Production From Waste Plamentioning

confidence: 99%

Hydrogen and Carbon Nanotubes from Pyrolysis-Catalysis of Waste Plastics: A Review

Williams

2020

Waste Biomass Valor

181

108

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“…Higher temperatures (700–800 °C) lead to the formation of CNTs and enhance the quality while lower temperatures lead to formation of amorphous carbons. Temperature also helps in nullifying the effect of different feedstock, providing carbon with more uniform properties . Lower amount of steam may help in the quality of the CNT by acting as a mild oxidizing agent.…”

Section: Discussionmentioning

confidence: 99%

“…Maximum CNT yield was obtained at pyrolysis temperature of 700 °C. Bajad et al . was able to obtain a maximum yield of MWCNT [6.033 g/30 g PE (201 mg/g plastic)] at a feed rate of 5 g/2 min at 700 °C pyrolysis temperature and fixed CNT synthesis temperature (800 °C).…”

Section: Carbon Production From Plastic Wastementioning

confidence: 99%

Production of hydrogen and carbon nanotubes via catalytic thermo‐chemical conversion of plastic waste: review

Sharma¹,

Batra

2019

J of Chemical Tech & Biotech

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BACKGROUND: Plastic waste has been growing at an alarming rate with dissatisfactory recycling rates. It has a potential to be used for the recovery of hydrogen and carbon nanotubes due to its intrinsic properties. RESULTS: Thermo-chemical processes may be used to tap into the recovery of these resources from the wastes. Catalysts can be employed to increase the gaseous yield and to optimize the process parameters. Hydrogen production is greatly influenced by the catalyst properties, temperature, steam and feedstock. Similarly, the carbon deposits formed are influenced by many factors such as type of metal catalyst used and metal-support interaction. This review focuses on studies employing catalytic thermo-chemical processes for extracting hydrogen and carbon nano structures from plastic wastes while evaluating the role of parameters such as temperature, catalyst type, catalyst composition, steam/feed ratio, feed rate, feedstock and their effect on the product yields. CONCLUSION: In view of increasing concerns regarding waste management, climate change and energy security the possibility of employing waste products for producing clean energy in a sustainable manner is appealing and needs additional fundamental research.C 5+ and cracking products. There is a decrease in catalyst deactivation rate due to increased gasification of deposited coke, faster J Chem Technol Biotechnol 2020; 95: [11][12][13][14][15][16][17][18][19]

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“…While pyrolysis oil can be collected and sold as a fuel, noncondensable gases are typically burnt [9,10], contributing to CO2 emissions. Recently, several studies proposed to utilize this gas stream for the synthesis of carbon nanomaterials, such as multi-walled carbon nanotubes (MWCNTs) [11][12][13][14][15]. This could potentially increase the accruable economic revenue from pyrolysis due to the high cost of MWCNTs (> 60 USD per kg).…”

Section: Introductionmentioning

confidence: 99%

Environmental impact assessment of converting flexible packaging plastic waste to pyrolysis oil and multi-walled carbon nanotubes

Ahamed

Veksha

Yin

et al. 2020

Journal of Hazardous Materials

110

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Production of liquid hydrocarbons, carbon nanotubes and hydrogen rich gases from waste plastic in a multi-core reactor

Cited by 30 publications

References 35 publications

Hydrogen and Carbon Nanotubes from Pyrolysis-Catalysis of Waste Plastics: A Review

Hydrogen and Carbon Nanotubes from Pyrolysis-Catalysis of Waste Plastics: A Review

Production of hydrogen and carbon nanotubes via catalytic thermo‐chemical conversion of plastic waste: review

Environmental impact assessment of converting flexible packaging plastic waste to pyrolysis oil and multi-walled carbon nanotubes

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