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Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing

Luis E. Arteaga-Pérez Orcid Logo, Sebastián Larrere, Manuel Chávez-Delgado Orcid Logo, Yesid J. Rueda Ordoñez, Jose L. Concha, Cristina Segura, Jose Norambuena-Contreras Orcid Logo, Yannay Casas-Ledón Orcid Logo

Journal of Cleaner Production, Volume: 490, Start page: 144787

Swansea University Author: Jose Norambuena-Contreras Orcid Logo

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DOI (Published version): 10.1016/j.jclepro.2025.144787

Abstract

The application of pyrolysis to convert waste tires into fuels and engineering additives for asphalt self-healing is being actively explored by both industry stakeholders and researchers. This study presents, for the first time, a comprehensive evaluation of the technical and environmental implicati...

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Published in: Journal of Cleaner Production
ISSN: 0959-6526
Published: Elsevier BV 2025
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URI: https://cronfa.swan.ac.uk/Record/cronfa68734
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This study presents, for the first time, a comprehensive evaluation of the technical and environmental implications of producing encapsulated liquid pyro-rejuvenators for asphalt self-healing applications. The analyses include experimental data on the production, characterization, and upgrading of crude pyro-oils, complemented by plant simulations and scale-up considerations. The pyro-rejuvenator produced after pyrolysis of mining trucks waste tires at 470 &#xB0;C and distilled between 160 and 200 &#xB0;C, contains BTX (14.6%), o-cymene (10.9%) and limonene (58%), and &lt;10 cP viscosity, which confirms its feasibility for application in asphalt self-healing. Integrated mass balances results in yields of 27 wt% (pyro-rejuvenator), 11 wt% heavy fuel, 10 wt% light fuel and 5 wt% pyro-gas. The rejuvenator was encapsulated with 97% efficiency within thermochemically stable 1.5 mm alginate-based capsules produced by the vibrating jet method. Environmental Life Cycle Assessment results indicate that water consumption and electricity use during the encapsulation process heavily impact environmental performance, accounting for over 50%, necessitating the exploration of energy integration strategies. 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spelling 2025-02-27T18:38:10.0223175 v2 68734 2025-01-24 Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing 73c6854ebb10465fbf7faab297135641 0000-0001-8327-2236 Jose Norambuena-Contreras Jose Norambuena-Contreras true false 2025-01-24 ACEM The application of pyrolysis to convert waste tires into fuels and engineering additives for asphalt self-healing is being actively explored by both industry stakeholders and researchers. This study presents, for the first time, a comprehensive evaluation of the technical and environmental implications of producing encapsulated liquid pyro-rejuvenators for asphalt self-healing applications. The analyses include experimental data on the production, characterization, and upgrading of crude pyro-oils, complemented by plant simulations and scale-up considerations. The pyro-rejuvenator produced after pyrolysis of mining trucks waste tires at 470 °C and distilled between 160 and 200 °C, contains BTX (14.6%), o-cymene (10.9%) and limonene (58%), and <10 cP viscosity, which confirms its feasibility for application in asphalt self-healing. Integrated mass balances results in yields of 27 wt% (pyro-rejuvenator), 11 wt% heavy fuel, 10 wt% light fuel and 5 wt% pyro-gas. The rejuvenator was encapsulated with 97% efficiency within thermochemically stable 1.5 mm alginate-based capsules produced by the vibrating jet method. Environmental Life Cycle Assessment results indicate that water consumption and electricity use during the encapsulation process heavily impact environmental performance, accounting for over 50%, necessitating the exploration of energy integration strategies. Finally, this study demonstrates the feasibility of producing a new generation of asphalt rejuvenators from waste tires sourced from mining trucks. Journal Article Journal of Cleaner Production 490 144787 Elsevier BV 0959-6526 Waste tires; Pyrolysis; Distillation; Encapsulated rejuvenator; Life cycle assessment 20 1 2025 2025-01-20 10.1016/j.jclepro.2025.144787 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University This research was funded by the National Research and Development Agency (ANID from the Government of Chile, through the Research Projects FONDEF No. ID21I10127 and ANID/FONDAP/15130015 and ANID/FONDAP/1523A0001. 2025-02-27T18:38:10.0223175 2025-01-24T09:56:42.0183408 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering Luis E. Arteaga-Pérez 0000-0003-3982-4165 1 Sebastián Larrere 2 Manuel Chávez-Delgado 0000-0002-0821-667x 3 Yesid J. Rueda Ordoñez 4 Jose L. Concha 5 Cristina Segura 6 Jose Norambuena-Contreras 0000-0001-8327-2236 7 Yannay Casas-Ledón 0000-0001-9140-290x 8 68734__33398__9258e262fb1f4bc9b351029debee6c2b.pdf 68734.pdf 2025-01-24T10:03:15.8104722 Output 3061816 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention). true eng https://creativecommons.org/licenses/by/4.0/deed.en
title Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
spellingShingle Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
Jose Norambuena-Contreras
title_short Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
title_full Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
title_fullStr Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
title_full_unstemmed Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
title_sort Environmental life cycle assessment of encapsulated rejuvenators from mining truck waste tires via pyrolysis for asphalt self-healing
author_id_str_mv 73c6854ebb10465fbf7faab297135641
author_id_fullname_str_mv 73c6854ebb10465fbf7faab297135641_***_Jose Norambuena-Contreras
author Jose Norambuena-Contreras
author2 Luis E. Arteaga-Pérez
Sebastián Larrere
Manuel Chávez-Delgado
Yesid J. Rueda Ordoñez
Jose L. Concha
Cristina Segura
Jose Norambuena-Contreras
Yannay Casas-Ledón
format Journal article
container_title Journal of Cleaner Production
container_volume 490
container_start_page 144787
publishDate 2025
institution Swansea University
issn 0959-6526
doi_str_mv 10.1016/j.jclepro.2025.144787
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Civil Engineering
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description The application of pyrolysis to convert waste tires into fuels and engineering additives for asphalt self-healing is being actively explored by both industry stakeholders and researchers. This study presents, for the first time, a comprehensive evaluation of the technical and environmental implications of producing encapsulated liquid pyro-rejuvenators for asphalt self-healing applications. The analyses include experimental data on the production, characterization, and upgrading of crude pyro-oils, complemented by plant simulations and scale-up considerations. The pyro-rejuvenator produced after pyrolysis of mining trucks waste tires at 470 °C and distilled between 160 and 200 °C, contains BTX (14.6%), o-cymene (10.9%) and limonene (58%), and <10 cP viscosity, which confirms its feasibility for application in asphalt self-healing. Integrated mass balances results in yields of 27 wt% (pyro-rejuvenator), 11 wt% heavy fuel, 10 wt% light fuel and 5 wt% pyro-gas. The rejuvenator was encapsulated with 97% efficiency within thermochemically stable 1.5 mm alginate-based capsules produced by the vibrating jet method. Environmental Life Cycle Assessment results indicate that water consumption and electricity use during the encapsulation process heavily impact environmental performance, accounting for over 50%, necessitating the exploration of energy integration strategies. Finally, this study demonstrates the feasibility of producing a new generation of asphalt rejuvenators from waste tires sourced from mining trucks.
published_date 2025-01-20T08:19:03Z
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