Carbon nanotubes production from real-world waste plastics and the pyrolysis behaviour

Yuan Zhu; Jie Miao; Yingrui Zhang; Chunchun Li; Yuanyuan Wang; Yi Cheng; Mingce Long; Jiawei Wang; Chunfei Wu

doi:10.1016/j.wasman.2023.05.002

Carbon nanotubes production from real-world waste plastics and the pyrolysis behaviour

Yuan Zhu, Jie Miao, Yingrui Zhang, Chunchun Li, Yuanyuan Wang, Yi Cheng, Mingce Long, Jiawei Wang, Chunfei Wu

School of Environmental Science and Engineering

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

The investigation of the pyrolysis behaviour of real-world waste plastics (RWWP) and using them as the feedstock to produce carbon nanotubes (CNTs) could serve as an effective solution to address the global waste plastics catastrophe. This research aimed to characterize the pyrolysis behaviour of RWWP via thermogravimetric analysis (TG) and fast pyrolysis-TG/mass spectrometry (Py-TG/MS) analyses. Activation energies (131.04 kJ mol⁻¹ –171.04 kJ mol⁻¹) for RWWP pyrolysis were calculated by three methods: Flynn-Wall-Ozawa (FWO) method, Kissinger-Akahira-Sunose (KAS) method, and Starink method. Py-TG/MS results indicated that the RWWP could be identified as polystyrene (RWWP-1), polyethylene (RWWP-2), polyethylene terephthalate (RWWP-3, 4), and polypropylene (RWWP-5, 6). In addition, RWWP-1, 2, 5, 6 outperform RWWP-3 and 4 as sources of carbon for producing CNTs. The results showed a high carbon yield of 32.21 wt% and a high degree of CNT purity at 93.04%.

Original language	English
Pages (from-to)	141-151
Number of pages	11
Journal	Waste Management
Volume	166
DOIs	https://doi.org/10.1016/j.wasman.2023.05.002
State	Published - 1 Jul 2023

Keywords

Carbon nanotubes
Product characteristics
Pyrolysis behaviour
Waste plastics

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10.1016/j.wasman.2023.05.002

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title = "Carbon nanotubes production from real-world waste plastics and the pyrolysis behaviour",

abstract = "The investigation of the pyrolysis behaviour of real-world waste plastics (RWWP) and using them as the feedstock to produce carbon nanotubes (CNTs) could serve as an effective solution to address the global waste plastics catastrophe. This research aimed to characterize the pyrolysis behaviour of RWWP via thermogravimetric analysis (TG) and fast pyrolysis-TG/mass spectrometry (Py-TG/MS) analyses. Activation energies (131.04 kJ mol−1 –171.04 kJ mol−1) for RWWP pyrolysis were calculated by three methods: Flynn-Wall-Ozawa (FWO) method, Kissinger-Akahira-Sunose (KAS) method, and Starink method. Py-TG/MS results indicated that the RWWP could be identified as polystyrene (RWWP-1), polyethylene (RWWP-2), polyethylene terephthalate (RWWP-3, 4), and polypropylene (RWWP-5, 6). In addition, RWWP-1, 2, 5, 6 outperform RWWP-3 and 4 as sources of carbon for producing CNTs. The results showed a high carbon yield of 32.21 wt% and a high degree of CNT purity at 93.04%.",

keywords = "Carbon nanotubes, Product characteristics, Pyrolysis behaviour, Waste plastics",

author = "Yuan Zhu and Jie Miao and Yingrui Zhang and Chunchun Li and Yuanyuan Wang and Yi Cheng and Mingce Long and Jiawei Wang and Chunfei Wu",

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AU - Zhu, Yuan

AU - Miao, Jie

AU - Zhang, Yingrui

AU - Li, Chunchun

AU - Wang, Yuanyuan

AU - Cheng, Yi

AU - Long, Mingce

AU - Wang, Jiawei

AU - Wu, Chunfei

PY - 2023/7/1

Y1 - 2023/7/1

N2 - The investigation of the pyrolysis behaviour of real-world waste plastics (RWWP) and using them as the feedstock to produce carbon nanotubes (CNTs) could serve as an effective solution to address the global waste plastics catastrophe. This research aimed to characterize the pyrolysis behaviour of RWWP via thermogravimetric analysis (TG) and fast pyrolysis-TG/mass spectrometry (Py-TG/MS) analyses. Activation energies (131.04 kJ mol−1 –171.04 kJ mol−1) for RWWP pyrolysis were calculated by three methods: Flynn-Wall-Ozawa (FWO) method, Kissinger-Akahira-Sunose (KAS) method, and Starink method. Py-TG/MS results indicated that the RWWP could be identified as polystyrene (RWWP-1), polyethylene (RWWP-2), polyethylene terephthalate (RWWP-3, 4), and polypropylene (RWWP-5, 6). In addition, RWWP-1, 2, 5, 6 outperform RWWP-3 and 4 as sources of carbon for producing CNTs. The results showed a high carbon yield of 32.21 wt% and a high degree of CNT purity at 93.04%.

AB - The investigation of the pyrolysis behaviour of real-world waste plastics (RWWP) and using them as the feedstock to produce carbon nanotubes (CNTs) could serve as an effective solution to address the global waste plastics catastrophe. This research aimed to characterize the pyrolysis behaviour of RWWP via thermogravimetric analysis (TG) and fast pyrolysis-TG/mass spectrometry (Py-TG/MS) analyses. Activation energies (131.04 kJ mol−1 –171.04 kJ mol−1) for RWWP pyrolysis were calculated by three methods: Flynn-Wall-Ozawa (FWO) method, Kissinger-Akahira-Sunose (KAS) method, and Starink method. Py-TG/MS results indicated that the RWWP could be identified as polystyrene (RWWP-1), polyethylene (RWWP-2), polyethylene terephthalate (RWWP-3, 4), and polypropylene (RWWP-5, 6). In addition, RWWP-1, 2, 5, 6 outperform RWWP-3 and 4 as sources of carbon for producing CNTs. The results showed a high carbon yield of 32.21 wt% and a high degree of CNT purity at 93.04%.

KW - Carbon nanotubes

KW - Product characteristics

KW - Pyrolysis behaviour

KW - Waste plastics

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Carbon nanotubes production from real-world waste plastics and the pyrolysis behaviour

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Keywords

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