A Review on the Applicability of Life Cycle Assessment to Evaluate the Technical and Environmental Properties of Waste Electrical and Electronic Equipment

da Silva Muller Teixeira Flavia; de Carvalho Peres Augusto Cesar; Gomes Thiago Santiago; Visconte Leila Lea Y.; Pacheco Elen Beatriz Acordi Vasques

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A Review on the Applicability of Life Cycle Assessment to Evaluate the Technical and Environmental Properties of Waste Electrical and Electronic Equipment

机译：生命周期评估适用性评价废旧电气设备技术和环境特性的述评

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Acrylonitrile-butadiene-styrene (ABS) copolymer and high-impact polystyrene (HIPS) are the plastics most commonly found in waste electrical and electronic equipment (WEEE), although properties generally decline with recycling. Technical studies are important in assessing the properties of recycled plastics and obtaining better evidence of their return or not to the same production cycle, through a study of their impacts and life cycle assessment (LCA). This article aimed at a literature search for information that demonstrates the importance of considering the technical property results of LCA studies on WEEE plastics. LCA studies show that recycling WEEE plastics, when compared with virgin raw material, prevents 87% of ABS gas emissions, in addition to reducing energy consumption by up to 90% for ABS and HIPS. However, some technical properties of recycled WEEE polymer material, such as impact strength and ultimate elongation, decline when compared to virgin materials, which may hinder their reinsertion into the same production cycle. These properties can be enhanced by preparing compatible mixtures of ABS and HIPS, or by mixing them with virgin polymers. Recycled ABS (not mixed with another material) can return to the same production cycle when the goal is to preserve the modulus of elasticity. Studies that investigate properties using LCA are scarce. However, they are important in determining the viability of the material returning or not to the same production cycle, which would impact the process and produce different LCA results. Recycled ABS and HIPS polymers from WEEE can return to the same function even if some properties decline, since properties can be improved when the polymers are properly mixed or made compatible, thereby lowering costs and primarily minimizing the negative environmental impacts.

机译：丙烯腈 - 丁二烯 - 苯乙烯（ABS）共聚物和高抗冲聚苯乙烯（臀部）是废物电气和电子设备（WEEE）中最常见的塑料，但性质通常随着再循环而下降。通过研究其影响和生命周期评估（LCA），技术研究在评估再生塑料的性质并获得更好的证据表明其返回或不同一生产周期的证据非常重要。本文旨在文献搜索信息，以了解考虑LCA研究对WEEE塑料的技术性质的重要性。 LCA研究表明，与原始原料相比，回收WEEE塑料可防止87％的ABS气体排放，除了将能耗降低90％的ABS和臀部。然而，与原始材料相比，再生的WEEE聚合物材料的一些技术性质，例如冲击强度和极限伸长，延迟，这可能会阻碍其再生成相同的生产循环。通过制备ABS和臀部的相容混合物，或者通过将它们与原始聚合物混合来提高这些性质。再循环ABS（不与另一种材料混合）可以在目标是保持弹性模量时返回相同的生产周期。使用LCA调查属性的研究是稀缺的。然而，它们对于确定返回的材料的活力是重要的，这将影响过程并产生不同的LCA结果。即使某些性质下降，来自WEEE的再生ABS和HIPS聚合物也可以返回到相同的功能，因为当聚合物适当混合或使得兼容时，可以提高性能，从而降低成本并主要减少负面环境影响。

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来源
《Journal of Polymers and the Environment》 |2021年第5期|1333-1349|共17页
作者
da Silva Muller Teixeira Flavia; de Carvalho Peres Augusto Cesar; Gomes Thiago Santiago; Visconte Leila Lea Y.; Pacheco Elen Beatriz Acordi Vasques;
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作者单位

Univ Fed Rio Janeiro Inst Macromol Prof Eloisa Mano IMA Av Horacio Macedo 2-030 Cidade Univ BR-21941598 Rio De Janeiro RJ Brazil;

CENPES Ctr Pesquisas & Desenvolvimento Leopoldo Petr Brasileiro SA Ctr Pesquisa Ave Horacio Macedo 950 Cidade Univ BR-21941915 Rio De Janeiro RJ Brazil;

Univ Fed Rio Janeiro Inst Macromol Prof Eloisa Mano IMA Av Horacio Macedo 2-030 Cidade Univ BR-21941598 Rio De Janeiro RJ Brazil;

Univ Fed Rio Janeiro Inst Macromol Prof Eloisa Mano IMA Av Horacio Macedo 2-030 Cidade Univ BR-21941598 Rio De Janeiro RJ Brazil|Univ Fed Rio Janeiro Escola Politecn Programa Engn Ambiental Av Athos Silveira Ramos 149 Cidade Univ BR-21941909 Rio De Janeiro RJ Brazil;

Univ Fed Rio Janeiro Inst Macromol Prof Eloisa Mano IMA Av Horacio Macedo 2-030 Cidade Univ BR-21941598 Rio De Janeiro RJ Brazil|Univ Fed Rio Janeiro Escola Politecn Programa Engn Ambiental Av Athos Silveira Ramos 149 Cidade Univ BR-21941909 Rio De Janeiro RJ Brazil;

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正文语种 eng
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Recycling; ABS; HIPS; Waste electrical and electronic equipment; Life cycle assessment; Properties;

机译：回收;腹肌;臀部;废物电气和电子设备;生命周期评估;属性;

A Review on the Applicability of Life Cycle Assessment to Evaluate the Technical and Environmental Properties of Waste Electrical and Electronic Equipment

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