Investigating the feasibility of a reuse scenario for textile fibres recovered from end-of-life tyres
Investigating the feasibility of a reuse scenario for textile fibres recovered from end-of-life tyres
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DOI：
10.1016/j.wasman.2018.02.018
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发表时间：
2018-05-01
期刊：
影响因子：
8.1
通讯作者：
Marconi, Marco
中科院分区：
文献类型：
--
作者：
Landi, Daniele;Gigli, Silvia;Marconi, Marco
报废轮胎的管理受若干国家和国际立法的管制，旨在促进从这种废物中回收材料和能源。轮胎中使用的三种主要材料被认为是：橡胶（主要产品），目前在其他闭环应用中重复使用;钢，用于生产原始材料;和纺织纤维（约10%重量的ELT），主要用于焚烧回收能源本研究的目的是提出和验证一个新的闭环方案的纺织纤维的基础上，材料再利用沥青砾岩。最终目标是验证拟议处理工艺和再利用方案的技术、环境、财务和经济可行性。在确定技术可行性所需的纺织材料特性之后，开发了一种特定的工艺来清洁、压实和准备纤维，以便随后再利用。生命周期评估（LCA）已经进行了量化的环境效益，再利用的纤维。最后，根据生命周期评估结果进行了成本效益分析，以确定长期的财务和经济可持续性。从技术角度来看，轮胎纺织纤维可以成为沥青中常用的增强纤维素的有前途的替代品，只要纤维经过适当的准备（压实和颗粒生产），适用于标准的沥青混合料生产工艺。从环境的角度来看，与标准焚烧回收能源相比，在全球变暖潜力和酸化潜力降低方面观察到了相关效益（分别为-86%和-45%）。此外，拟议方案可被视为中长期财务可行（第5年后累计产生的现金流为正）和经济可持续（预期净现值超过（原文如此）3，000，000，经济回报率约为30%）。最后，敏感性和风险分析表明，未来在真实的工业应用中的实施没有具体的问题。(C)2018爱思唯尔有限公司版权所有。
The management of end-of-life tyres (ELTs) is regulated by several national and international legislations aiming to promote the recovery of materials and energy from this waste. The three main materials used in tyres are considered: rubber (main product), which is currently reused in other closed-loop applications; steel, which is used for the production of virgin materials; and textile fibres (approximately 10% by weight of ELTs), which are mainly incinerated for energy recovery (open-loop scenario).This study aims to propose and validate a new closed-loop scenario for textile fibres based on material reuse for bituminous conglomerates. The final objective is to verify the technical, environmental, financial, and economic feasibility of the proposed treatment process and reuse scenario. After characterization of the textile material, which is required to determine the technological feasibility, a specific process has been developed to clean, compact, and prepare the fibres for subsequent reuse. A life cycle assessment (LCA) has been carried out to quantify the environmental benefits of reusing the fibres. Finally, a cost benefit analysis based on the LCA results was conducted to establish the long-term financial and economic sustainability.From a technological point of view, the tyre textile fibres could be a promising substitute to the reinforcement cellulose commonly used in asphalts as long as the fibres are properly prepared (compaction and pellet production) for application in the standard bituminous conglomerate production process. From an environmental point of view, relevant benefits in terms of global warming potential and acidification potential reduction were observed in comparison with the standard incineration for energy recovery (respectively -86% and -45%). Moreover, the proposed scenario can be considered as financially viable in the medium to long term (cumulative generated cash flow is positive after the 5th year) and economically sustainable (expected net present value of more than (sic)3,000,000 and economic rate of return of approximately 30%). Finally, the sensitivity and risk analyses show that no specific issues are foreseen for the future implementation in real industrial applications. (C) 2018 Elsevier Ltd. All rights reserved.