A comparative life cycle assessment of tyre recycling using pyrolysis compared to conventional end-of-life pathways

IF 11.2 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling Pub Date : 2023-11-03 DOI:10.1016/j.resconrec.2023.107255

Daniel Maga, Venkat Aryan, Jan Blömer

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Abstract

End-of-life tyres (ELTs) are difficult to recycle due to their complex composition. Although there are several possible pathways to manage ELTs, in Germany roughly 50 % of the ELTs are still incinerated. One emerging technology that promises recycling of ELTs is the thermochemical processing through pyrolysis. This technology enables to recover carbon black and pyrolysis oil that can be reused for new tyres. Therefore, this study presents a comprehensive life cycle assessment to compare the environmental impacts from pyrolysis of ELTs against current dominant alternative end-of-life treatment pathways. The investigated alternative end-of-life pathways are (i) incineration in a cement plant, (ii) incineration in a dedicated incineration plant, and (iii) production of infills for artificial turfs. The results show that the recycling of ELTs for material recovery has lower environmental impacts in the categories global warming, particulate matter and resource use compared to end-of-life pathways that target energy recovery.

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使用热解与传统报废途径进行轮胎回收的比较生命周期评估

报废轮胎（ELT）由于其成分复杂，很难回收。尽管有几种可能的途径来管理ELT，但在德国，大约50%的ELT仍然被焚烧。一种有望回收ELT的新兴技术是通过热解进行热化学处理。这项技术能够回收炭黑和热解油，这些油可以重新用于新轮胎。因此，本研究提出了一项全面的生命周期评估，将ELT热解对环境的影响与目前占主导地位的替代报废处理途径进行比较。研究的替代报废途径包括（i）在水泥厂焚烧，（ii）在专用焚烧厂焚烧，以及（iii）生产人造草皮填充物。结果表明，与以能源回收为目标的报废途径相比，回收用于材料回收的ELT在全球变暖、颗粒物和资源使用等类别中对环境的影响较小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Resources Conservation and Recycling 环境科学-工程：环境

CiteScore

22.90

自引率

6.10%

发文量

625

审稿时长

23 days

期刊介绍： The journal Resources, Conservation & Recycling welcomes contributions from research, which consider sustainable management and conservation of resources. The journal prioritizes understanding the transformation processes crucial for transitioning toward more sustainable production and consumption systems. It highlights technological, economic, institutional, and policy aspects related to specific resource management practices such as conservation, recycling, and resource substitution, as well as broader strategies like improving resource productivity and restructuring production and consumption patterns. Contributions may address regional, national, or international scales and can range from individual resources or technologies to entire sectors or systems. Authors are encouraged to explore scientific and methodological issues alongside practical, environmental, and economic implications. However, manuscripts focusing solely on laboratory experiments without discussing their broader implications will not be considered for publication in the journal.