Resources, conservation & recycling advances最新文献

英文中文

Role of training in changing designers’ attitudes and behaviour in optimal use of products with recycled content in the construction sector: A systematic literature review 培训在改变设计师的态度和行为的作用，在建筑部门与回收内容的产品的最佳使用：系统的文献综述

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-01-09 DOI: 10.1016/j.rcradv.2025.200248

Chamari Jayarathna , Tim Ryley , Savindi Caldera , Salman Shooshtarian , Peter SP Wong , Atiq Zaman , Ana Maria Caceres Ruiz

Optimal use of products with recycled content (PwRC) has emerged as a targeted strategy to reduce construction and demolition (C&D) waste disposal and promote resource circularity in the building and construction sector. Within this context, the role of training in changing project designers’ attitudes and behaviour towards the use of PwRC is poorly investigated on a global scale. Hence, this study aims to develop a framework that shows how training can influence project designers’ attitudes and behaviour towards the optimal use of PwRC through two research questions: (a) what are the factors that influence to change the attitude and behaviour, (b) what are the existing theories and models that support the attitudes and behavioural changes, using a systematic literature review. The review found that changing attitudes and behaviour towards the optimal use of PwRC is influenced by psychological factors, although economic and sociological factors do also have an impact. Of these psychological factors, attitude, knowledge, perceived behaviour control, and subjective norms are more frequently examined. From the economic factors, economic benefits and from sociological factors, collaboration and communication are the primary considerations. The review also suggests that the theory of Planned Behaviour and the Extended Theory of Planned Behaviour are the most widely used theories in this respect. This study contributes to the knowledge development by proposing a seven-element training framework aiming to influence project designers’ attitudes and behavioural change towards the optimal use of PwRC. This is a foundation for further research on circular economy education for construction project designers.

优化使用含有可回收成分的产品（PwRC）已成为减少建筑和拆除（C&；D）废物处置和促进建筑行业资源循环的有针对性的策略。在这种情况下，培训在改变项目设计者对使用PwRC的态度和行为方面的作用在全球范围内的调查很少。因此，本研究旨在通过两个研究问题建立一个框架，表明培训如何影响项目设计师对PwRC最佳使用的态度和行为：(a)影响改变态度和行为的因素是什么，(b)支持态度和行为改变的现有理论和模型是什么，使用系统的文献综述。审查发现，对PwRC最佳利用的态度和行为的改变受到心理因素的影响，尽管经济和社会因素也有影响。在这些心理因素中，态度、知识、感知行为控制和主观规范更常被检查。从经济因素、经济效益和社会因素来看，协作和沟通是首要考虑的因素。综述还表明，计划行为理论和扩展计划行为理论是这方面应用最广泛的理论。本研究提出了一个七要素培训框架，旨在影响项目设计者对PwRC最佳利用的态度和行为改变，从而有助于知识的发展。这为建筑工程设计人员循环经济教育的进一步研究奠定了基础。

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引用次数: 0

Upcycling of medium-density fiberboard and polyurethane foam wastes into novel composite materials 中密度纤维板和聚氨酯泡沫废材料的升级利用

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-01-09 DOI: 10.1016/j.rcradv.2025.200244

Aleksander Hejna , Mateusz Barczewski , Joanna Aniśko , Adam Piasecki , Roman Barczewski , Paulina Kosmela , Jacek Andrzejewski , Marek Szostak

While plastic and e-waste dominate public discourse, municipal waste, particularly bulky wastes pose a significant challenge due to their large-scale generation aligning with the enrichment of society. Their efficient collection and keeping in a loop should be considered among the priorities of municipal waste management. Herein, the presented work presents novel composite materials obtained from flexible polyurethane foams used as mattresses and medium-density fiberboards applied in furniture products. Composites have been prepared using compression molding, with the addition of an innovative binder composed of a diisocyanate and inorganic salt, whose in situ decomposition led to the gas generation providing the porous structure and strengthening the interfacial bonding inside the material. The impact of changes induced by the chemical interactions on the appearance, morphology, mechanical, thermal, acoustic and insulation performance of composites has been evaluated. Observed changes pointed to the auspicious conclusions on the further applications of the examined binder composition.

虽然塑料和电子垃圾主导着公共话语，但城市垃圾，特别是大件垃圾，由于其大规模产生与社会的富裕相一致，构成了重大挑战。它们的有效收集和循环应被视为城市废物管理的优先事项之一。本文介绍了一种新型的复合材料，这种复合材料是从用作床垫的柔性聚氨酯泡沫和用于家具产品的中密度纤维板中获得的。复合材料采用压缩成型制备，添加了一种由二异氰酸酯和无机盐组成的创新粘合剂，其原位分解导致气体生成，提供了多孔结构并加强了材料内部的界面结合。评价了化学相互作用引起的变化对复合材料的外观、形态、力学、热、声和绝缘性能的影响。观察到的变化指出了对所检查的粘合剂组成的进一步应用的吉祥结论。

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引用次数: 0

Sustainable and low-cost protic ionic liquid-based recovery of oil from agricultural wastes “date pits” for biofuel production 可持续和低成本的以质子离子液体为基础的从农业废弃物“枣坑”中回收油用于生物燃料生产

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-01-08 DOI: 10.1016/j.rcradv.2025.200246

Mohammed Talhami , Abdurahman Hafez Mohammed Kashem , Kenan A. Alkhamri , Omar Albatarni , Mahmoud Ibrahim Thaher , Probir Das , Maryam AL-Ejji , Alaa H. Hawari

Several studies revealed that date pits, often regarded as agro-industrial waste, possess the potential to be upgraded to value-added products like biofuels. Yet, the majority of the oil extraction studies from date pits relied on the use of environmentally harmful organic solvents which are highly flammable and toxic. Thus, for the first time, this paper is aimed at developing a cost-effective, green, and novel technology for the extraction of oil from date pits using protic ionic liquids. The date pits of eight distinct varieties were structurally characterized, determining their composition of oil (7.6–10.9%), carbohydrates (80.8–84.6%), protein (4.8–8.8%), and ash (1.1–1.7%) based on dry biomass. The quality of oil across these date pits was found to be comparatively similar and well-suited for biofuel production, with oleic, lauric, myristic, and palmitic acid being the most abundant constituents. The screening of six unique protic ionic liquids indicated that Triethylammonium dihydrogen phosphate [TEA][H₂PO₄] exhibited the highest oil extraction of 91.3 mg/g biomass (84% of total oil) from Majdool dates. The investigation of process parameters disclosed that temperature significantly affected oil extraction performance, whereas the reaction duration's impact was found to be minor. The recycling and reuse of [TEA][H₂PO₄] for the extraction of oil from Majdool date seeds throughout four cycles were promising in terms of performance stability, thereby promoting process viability. The outcomes obtained through this study endorse the capacity of low-cost protic ionic liquids to efficiently extract oil from date pits, presenting a viable alternative to toxic organic solvents in this context.

几项研究表明，通常被视为农业工业废物的枣核具有升级为生物燃料等增值产品的潜力。然而，大多数从枣坑中提取油的研究依赖于使用对环境有害的有机溶剂，这些溶剂高度易燃和有毒。因此，本文旨在首次开发一种经济、绿色、新颖的利用质子离子液体从枣核中提取油的技术。对8个不同品种的枣核进行了结构表征，确定了枣核的干生物量组成，分别为油脂（7.6 ~ 10.9%）、碳水化合物（80.8 ~ 84.6%）、蛋白质（4.8 ~ 8.8%）和灰分（1.1 ~ 1.7%）。研究发现，这些枣核上的油质量比较相似，非常适合用于生物燃料生产，其中油酸、月桂酸、肉豆蔻酸和棕榈酸是最丰富的成分。对6种独特的质子离子液体的筛选表明，磷酸二氢三乙基铵[TEA][H2PO4]的提取率最高，为91.3 mg/g生物质（占总油的84%）。工艺参数的研究表明，温度对萃取性能有显著影响，而反应时间对萃取性能的影响较小。[TEA][H2PO4]的回收和再利用在四个循环中从Majdool枣籽中提取油，就性能稳定性而言是有希望的，从而提高了工艺的可行性。本研究的结果表明，低成本的质子离子液体能够有效地从枣核中提取油，在这种情况下，提供了一种可行的替代有毒有机溶剂的方法。

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引用次数: 0

Agricultural residues to high-value nanomaterials: Pathways to sustainability 农业残留物到高价值纳米材料：通往可持续性的途径

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-01-02 DOI: 10.1016/j.rcradv.2025.200243

Kelvin Adrian Sanoja-López , Jeffrey Saúl Cedeño-Muñoz , Bryan Fernando Rivadeneira-Mendoza , Arnaldo Vergara-Romero , Rafael Luque , Joan Manuel Rodríguez-Díaz

Agriculture plays an essential role in sustaining society, yet the substantial waste produced during agricultural processes presents a major challenge for waste management. Often, agricultural waste is simply burned, posing environmental concerns. To address these issues, the revalorisation of agricultural waste by converting it into high-value nanomaterials offers a promising approach. This work reviews recent advances in the synthesis of nanomaterials from agricultural waste, focusing on materials such as carbonaceous compounds, metal-organic frameworks (MOFs), polymers, and silica-based nanomaterials. It also explores their applications in key sectors, including agriculture, water treatment, and medicine. A feasibility analysis assessed both economic viability and environmental impact, demonstrating that polymeric, carbon-based, and siliceous nanomaterials are particularly cost-effective and environmentally beneficial. This revalorization process not only generates commercially valuable nanomaterials but also promotes sustainable waste management practices. The study underscores the significant potential of agricultural waste as a resource for producing nanomaterials, aligning with both waste reduction and the generation of marketable products.

农业在维持社会方面发挥着至关重要的作用，但农业过程中产生的大量废物对废物管理提出了重大挑战。农业废弃物通常被直接焚烧，造成了环境问题。为了解决这些问题，通过将农业废物转化为高价值纳米材料来重新利用它们提供了一种很有前途的方法。本文综述了从农业废弃物中合成纳米材料的最新进展，重点介绍了碳质化合物、金属有机框架、聚合物和硅基纳米材料等材料。它还探讨了它们在关键部门的应用，包括农业、水处理和医药。可行性分析评估了经济可行性和环境影响，表明聚合物、碳基和硅质纳米材料特别具有成本效益和环境效益。这种再增值过程不仅产生了具有商业价值的纳米材料，而且还促进了可持续的废物管理实践。这项研究强调了农业废弃物作为一种生产纳米材料的资源的巨大潜力，这与减少废弃物和生产适销对路的产品相一致。

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引用次数: 0