Resources, conservation & recycling advances最新文献_第8页

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 : 2025-04-01 Epub 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

Valorisation of gypsum boards with polyurethane waste to promote their circular economy 利用聚氨酯废弃物对石膏板进行增值，促进其循环经济

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2024-12-13 DOI: 10.1016/j.rcradv.2024.200240

Alba Rodrigo-Bravo , Sara Pavía , Verónica Calderón Carpintero , Lourdes Alameda Cuenca-Romero , Sara Gutiérrez-González

The new European environmental policies for construction focus on sustainability, promoting energy efficiency, recyclable materials and circularity, with an emphasis on waste management. This study enhances gypsum board circularity by recycling polyurethane gypsum ceiling tiles waste into a new precast material for suspended and demountable ceilings. The process treats the waste as a whole, without separating the original raw materials: gypsum, polyurethane foam waste and fiberglass. The objective is to determine a gypsum mixture, incorporating the maximum amount of waste, with suitable mechanical properties, workability and consistency for industrial replication. The research studies the physical and mechanical properties of the new products. During the manufacturing phase of the new plasters, it is reported that citric acid needs to be added to the mixtures to ensure good workability and to delay the setting time. Without pre-calcination, gypsum mortars with recycled ceiling tile show a 7 to 10 % reduction in bulk density, compared to the reference plaster. Only two of the four samples tested meet the mechanical requirements, with strengths 35 and 60 % lower than those of the control mixture. Finally, the thermal conductivity of the innovative mortars is on average 16 % lower, improving the insulating properties of the material. The results conclude the feasibility of valorising polyurethane gypsum boards waste, promoting sustainable recycling practices.

新的欧洲建筑环境政策侧重于可持续性，促进能源效率，可回收材料和循环性，重点是废物管理。本研究通过回收聚氨酯石膏吊顶砖废料，使其成为一种新的预制材料，用于悬挂和可拆卸的吊顶，从而提高了石膏板的圆度。该工艺将废物作为一个整体处理，而不分离原始原料：石膏、聚氨酯泡沫废物和玻璃纤维。目的是确定石膏混合物，包含最大数量的废物，具有适当的机械性能，可加工性和工业复制的一致性。研究了新产品的物理力学性能。据报道，在新膏药的制造阶段，需要在混合物中添加柠檬酸以确保良好的和易性并延迟凝固时间。与参考灰泥相比，未经预煅烧的石膏砂浆与可回收的天花板瓷砖相比，体积密度降低了7%至10%。4个试验样品中只有2个达到力学要求，强度分别比对照混合物低35%和60%。最后，创新砂浆的导热系数平均降低16%，提高了材料的绝缘性能。结果表明，对聚氨酯石膏板废弃物进行估价，促进可持续回收的可行性。

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引用次数: 0

Beneficial use of sludge from water treatment plants as a multiple resource: Potential and limitations 水处理厂污泥作为一种多种资源的有益利用：潜力和局限性

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2025-01-10 DOI: 10.1016/j.rcradv.2025.200247

Gabriela Nakayama Messa, Amanda Maria Dantas de Jesus, Fabiana Alves Fiore

The increasing and continuous generation of water treatment plant sludge (WTPS) is still an under-recognised problem, although in most countries the inappropriate disposal of WTPS into watercourses has a negative impact on the environment. The need to incorporate circular economic principles in the management of this waste has stimulated studies on the reintroduction of WTPS into the production chain, but these investigations generally evaluate specific processes. The aim of this research was to identify the potential and limitations of WTPS reuse. Therefore, a systematic literature review was carried out using the archival search method, which resulted in the analysis of 106 selected articles. The results show that the beneficial use of WTPS in the manufacture of construction products and as inputs for chemical processes are the most studied applications. This can be explained by sludge's composition that consists of more than 80% by mass of the elements: silicon, aluminum, iron and calcium. It should be noted that the predominance of these elements is related to the type of input used in water purification and the characteristics of the raw water collected. The mineralogical composition of WTPS is seasonally predominated by quartz and kaolinite. These residues also contain heavy metals especially such as barium, chrome, lead and mercury, and microorganisms such as proteobacteria, firmicutes and cyanobacteria, presenting potential risks to human health and the environment, and demanding special care in the management and beneficial uses. The lack of standardization and studies that address environmental and economic viability are research gaps in this area.

水处理厂污泥的不断增加和不断产生仍然是一个未得到充分认识的问题，尽管在大多数国家，将水处理厂污泥不当处置到水道中对环境产生了负面影响。需要将循环经济原则纳入这种废物的管理，这刺激了关于将WTPS重新引入生产链的研究，但这些调查一般评价具体过程。本研究的目的是确定WTPS重用的潜力和局限性。因此，我们采用文献检索法进行了系统的文献综述，筛选出106篇文章进行分析。研究结果表明，WTPS在建筑产品制造和化学工艺投入中的有益利用是研究最多的应用。这可以用污泥的成分来解释，它由超过80%的元素组成：硅、铝、铁和钙。应该指出的是，这些因素的优势与水净化中使用的投入类型和收集的原水的特性有关。WTPS的矿物组成以石英和高岭石为主。这些残留物还含有重金属，特别是钡、铬、铅和汞，以及变形菌门、厚壁菌门和蓝藻门等微生物，对人类健康和环境构成潜在风险，在管理和有益利用方面需要特别小心。缺乏标准化和研究解决环境和经济可行性是这一领域的研究空白。

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引用次数: 0

Environmental benefits of airport waste classification and recycling strategies: An analysis of behavior in multi-agent systems 机场垃圾分类与回收策略的环境效益：多智能体系统行为分析

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2024-12-11 DOI: 10.1016/j.rcradv.2024.200239

Zixin Bian, Zhibo Zhao, Xinrui Guo, Yifan Gu, Yi Yi, Yuxian Hong, Mingxuan Tuo, Yihan Li, Yufeng Wu

The classification and recycling of airport waste has become a key point in developing green airports. However, airport waste classification involves a large number of stakeholders. The influence factors are complex, and the interactions between the stakeholders are not clear. Based on the agent-based model, we sort out the behaviors and driving factors of the three main stakeholders, namely passengers, collectors, and managers, and construct a multi-agent system of airport waste classification and recycling with the coupling of the waste generation subsystem, the recycling subsystem and the strategy formulation subsystem. By the complex system, we analyze the comprehensive effects of different policy strategies. Using the life cycle assessment method, an environmental benefit assessment model for airport waste classification and recycling is established to analyze the environmental benefits of different strategies and find the best strategy for the airport. The results show that implementing policy strategies can significantly change passengers’ waste disposal behavior and more than double their willingness to use green products. The combined strategy of the full-factor change scenario demonstrates a significant effect in optimizing the waste metabolism structure and recyclables disposal structure at the airport, with a 76.9 % increase in the use of green products relative to the BAU scenario. Through the implementation of the combined strategy, recyclable waste recycling can reduce 10.6 t CO₂e and 15.6 % of photochemical oxidant emissions, which is a significant environmental benefit.

机场废弃物的分类和回收利用已成为发展绿色机场的关键。然而，机场垃圾分类涉及到大量的利益相关者。影响因素复杂，利益相关者之间的相互作用不明确。基于agent模型，对旅客、收集者和管理者三个主要利益相关者的行为和驱动因素进行梳理，构建了垃圾产生子系统、回收子系统和策略制定子系统耦合的机场垃圾分类回收多agent系统。通过复杂系统分析不同政策策略的综合效应。运用生命周期评价方法，建立机场垃圾分类回收的环境效益评价模型，分析不同策略的环境效益，寻找最适合机场的策略。结果表明，实施政策策略可以显著改变乘客的垃圾处理行为，使其使用绿色产品的意愿增加一倍以上。全因子变化情景组合策略对机场废弃物代谢结构和可回收物处理结构的优化效果显著，绿色产品使用量较BAU情景提高76.9%。通过实施联合战略，可回收废弃物回收可减少10.6 t CO2e和15.6%的光化学氧化剂排放，环境效益显著。

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引用次数: 0

Assessing the sustainability performances of the supply chain of decentralized urban food waste composting for urban green spaces 城市绿地分散式城市食物垃圾堆肥供应链的可持续性绩效评估

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2025-01-11 DOI: 10.1016/j.rcradv.2025.200245

Wenrui Shen , Haoran Qiao , Xin Tong , Yilong Xiao , Ling Han

To address challenges of municipal food waste (FW) treatment and urban green space (UGS) soil simultaneously, this study proposes the "Residential FW - Decentralized Composting - Application to UGS" (DCUGS) supply chain and assess its sustainability performances. A Mixed-Integer Linear Programming model integrated with GIS (Geo-Information System) at a fine-scale was set up to simulate this conceptual chain in Haidian, Beijing. The sustainability performance of the supply chain is then assessed across economic, environmental, and social dimensions. The results indicated that compost fulfills 61% of residential and 12% of park green space fertilizer needs, with 51% of FW processed locally. Compared to centralized FW management, DCUGS costs 254.21 CNY/ton, 18.04% of centralized treatment costs, mainly due to reduced transportation. Carbon footprint (CF) analysis indicates DCUGS also achieves a carbon reduction of 64.11 kg CO_2e/ton, surpassing mainstream Chinese FW management. A hedonic model reveals that the increase in residents’ welfare from enhanced greenery outweighs the space occupied by composting facilities. All results show this chain exhibits superior sustainability across three dimensions and may provide a sustainable and preferable choice for the resourceful treatment of FW in Chinese cities.

为了同时解决城市食物垃圾（FW）处理和城市绿地（UGS）土壤的挑战，本研究提出了“住宅食物垃圾-分散堆肥-应用于UGS”（DCUGS）供应链，并评估其可持续性绩效。以北京海淀区为例，建立了一个与GIS （Geo-Information System）相结合的精细尺度混合整数线性规划模型来模拟这一概念链。然后从经济、环境和社会三个方面对供应链的可持续性绩效进行评估。结果表明，堆肥满足了61%的住宅和12%的公园绿地肥料需求，其中51%的FW在当地处理。与FW集中管理相比，DCUGS成本为254.21元/吨，为集中处理成本的18.04%，主要原因是运输减少。碳足迹（CF）分析表明，DCUGS还实现了64.11 kg CO2e/吨的碳减排，超过了中国主流FW管理。一个享乐模型显示，增强绿化带来的居民福利的增加超过了堆肥设施所占用的空间。研究结果表明，该链条在三个维度上具有良好的可持续性，可以为中国城市FW的资源化治理提供可持续的、较好的选择。

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引用次数: 0

Exploring a nexus among green behavior and environmental sustainability: A systematic literature review and avenues for future research 探索绿色行为与环境可持续性之间的联系：系统的文献综述和未来研究的途径

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2025-01-18 DOI: 10.1016/j.rcradv.2025.200249

Noor Islam Jasim , Saraswathy Shamini Gunasekaran , Mohammed A. Al-Sharafi , Muhammed Ibrahim , Abba Hassan , Moamin A. Mahmoud , Adnan Bakather

To systematically review and synthesize research on green behavior, examining its theoretical foundations, influencing factors, and broader implications for environmental sustainability, a systematic literature review was conducted following PRISMA guidelines, utilizing Scopus and Web of Science databases. The search yielded 130 studies, with 88 meeting the inclusion criteria based on factors like language, peer-review status, theoretical framework, and relevance. The objective is to encapsulate the diversity of theoretical frameworks, methodologies, and empirical findings that define this vibrant area of research. The review delineates the significant surge in scholarly attention towards green behavior, highlighting its emergent role in promoting sustainable environmental practices across various sectors. It provides a nuanced understanding of the drivers, barriers, and outcomes associated with adopting green behaviors, underscoring the complexity of navigating toward sustainability. The analysis reveals a predominant reliance on quantitative methods to explore the phenomena while pointing out the relative scarcity of studies addressing the socioeconomic dimensions underpinning green behavior. This paper identifies critical gaps by offering a holistic view of the academic landscape. It suggests avenues for future research, particularly the need for an integrated approach encompassing environmental, social, and economic considerations. In doing so, it aims to contribute to a more comprehensive discourse on sustainable practices, encouraging multidisciplinary collaborations to address the multifaceted challenges of environmental sustainability.

为了系统回顾和综合有关绿色行为的研究，考察其理论基础、影响因素及其对环境可持续性的广泛影响，本文根据PRISMA的指导方针，利用Scopus和Web of Science数据库进行了系统的文献综述。搜索产生了130项研究，其中88项符合基于语言、同行评议状态、理论框架和相关性等因素的纳入标准。目的是概括定义这个充满活力的研究领域的理论框架、方法和实证研究结果的多样性。该评论描述了对绿色行为的学术关注的显著激增，强调了其在促进各个部门的可持续环境实践方面的新兴作用。它提供了与采用绿色行为相关的驱动因素、障碍和结果的细致理解，强调了走向可持续发展的复杂性。该分析揭示了主要依赖定量方法来探索这一现象，同时指出解决支撑绿色行为的社会经济维度的研究相对稀缺。本文通过提供学术景观的整体视图来确定关键的差距。它提出了未来研究的途径，特别是需要一种综合的方法，包括环境、社会和经济方面的考虑。在此过程中，它旨在促进对可持续实践的更全面的论述，鼓励多学科合作，以应对环境可持续性的多方面挑战。

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引用次数: 0

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 : 2025-04-01 Epub 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

Cutting-edge techniques and environmental insights in recycled concrete aggregate production: A comprehensive review 再生混凝土骨料生产中的尖端技术和环境见解：全面回顾

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2024-12-14 DOI: 10.1016/j.rcradv.2024.200241

Ram Prasad Neupane , Ningombam Reena Devi , Thanongsak Imjai , Abhishek Rajput , Takafumi Noguchi

The rapid growth of urban infrastructure has led to a substantial rise in construction and demolition waste (C&DW), causing environmental issues like overflowing landfills and depletion of natural resources. Recycled concrete aggregates (RCA) offer a sustainable alternative to natural aggregates (NA), helping reduce landfill use and energy consumption by up to 85 % and lowering CO₂ emissions by 90 %, providing significant environmental and economic benefits. However, untreated RCA exhibits lower strength and durability due to adhered mortar and impurities. This review delves into novel and advanced RCA treatment methods and production techniques that enhance RCA's properties. These methods achieve up to 42 % improvement in compressive strength and a 27 % reduction in water absorption. Researchers have found that impact crushers produce higher-quality aggregates compared to jaw or cone crushers. Treatments like acid washing and carbonation enhance particle density and reduce water absorption by 17.5 %. Recycled aggregate concrete (RAC) produced from treated RCA can reach 87 % of the compressive strength of natural aggregate concrete (NAC), with certain combined treatments achieving results close to NAC. Inconsistencies in RCA properties due to various treatments emphasise the need for standardised production and testing guidelines. This review underscores RCA's role in promoting sustainable construction and its potential to significantly mitigate CO₂ emissions, encouraging further research to refine these methods for long-term environmental gains.

城市基础设施的快速发展导致建筑和拆除垃圾（C&；DW）的大幅增加，造成了垃圾填埋场溢出和自然资源枯竭等环境问题。再生混凝土骨料（RCA）是天然骨料（NA）的可持续替代品，有助于减少垃圾填埋场的使用和能源消耗高达85%，降低二氧化碳排放量90%，具有显著的环境和经济效益。然而，未经处理的RCA表现出较低的强度和耐久性，因为粘连砂浆和杂质。本文综述了提高RCA性能的新型和先进的RCA处理方法和生产技术。这些方法可使抗压强度提高42%，吸水率降低27%。研究人员发现，与颚式或圆锥式破碎机相比，冲击式破碎机生产的骨料质量更高。酸洗和碳化等处理提高了颗粒密度，减少了17.5%的吸水率。经处理的再生骨料混凝土（RAC）抗压强度可达到天然骨料混凝土（NAC）抗压强度的87%，某些组合处理可达到接近NAC的效果。由于各种处理方法导致的RCA性能的不一致性强调了标准化生产和测试指南的必要性。本综述强调了RCA在促进可持续建筑方面的作用及其显著减少二氧化碳排放的潜力，鼓励进一步研究以改进这些方法以获得长期的环境收益。

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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 : 2025-04-01 Epub 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

Biochar in cementitious composites: A comprehensive review of properties, compatibility, and prospect of use in sustainable geopolymer concrete 生物炭在胶凝复合材料中的应用：性能、相容性及其在可持续地聚合物混凝土中的应用前景的综合综述

IF 5.4 Q1 ENVIRONMENTAL SCIENCES

Resources, conservation & recycling advances

Pub Date : 2025-04-01 Epub Date: 2024-12-18 DOI: 10.1016/j.rcradv.2024.200242

Seemab Tayyab , Wahid Ferdous , Weena Lokuge , Rafat Siddique , Allan Manalo

Geopolymer concrete (GPC) finds great potential in reducing global warming emissions from the construction sector. The conventional GPC precursor binders (fly ash, slag, metakaolin, silica fume, etc.) and alkaline activators are expensive, pollution-causing, and insufficient to meet the global requirement of concrete. Biochar (BC), agricultural waste produced through pyrolysis has rapidly been employed in cementitious composites since last decade because of its low cost, low carbon footprint, and ecological advantages. This paper presents a detailed review of the compatibility of BC with GPC, the properties (physical, chemical, and mechanical) in cementitious composites, and the chemical suitability of BC with GPC. The physical and chemical properties of BC can be controlled and highly depend on its production method (temperature, pressure, heating rate, resident time). The BC rich in silica and alumina is a feasible alternative to the solid precursor in geopolymer composites by controlling the particle size and mix design. The formation of a highly alkaline BC with water ensured its compatibility as an alkaline activator solution. They revealed comparable strength to GPC produced using conventional activators. Future studies are needed to investigate BC's experimental and practical applications as a precursor and alkaline activator in geopolymer composites.

地聚合物混凝土（GPC）在减少建筑行业的全球变暖排放方面具有巨大潜力。传统的GPC前驱体粘结剂（粉煤灰、矿渣、偏高岭土、硅灰等）和碱性活化剂价格昂贵、污染严重，不能满足混凝土的全球要求。生物炭（BC）是一种通过热解产生的农业废弃物，由于其低成本、低碳足迹和生态优势，在近十年来迅速应用于胶凝复合材料。本文详细介绍了BC与GPC的相容性，胶结复合材料的物理、化学和力学性能，以及BC与GPC的化学适应性。BC的物理和化学性质是可以控制的，并且高度依赖于它的生产方法（温度、压力、加热速率、停留时间）。通过控制颗粒大小和配比设计，富含二氧化硅和氧化铝的BC可以替代固体前驱体用于地聚合物复合材料中。高碱性BC与水的形成保证了其作为碱性活化剂溶液的相容性。他们揭示了与使用传统活化剂生产的GPC相当的强度。BC在地聚合物复合材料中作为前驱体和碱性活化剂的实验和实际应用有待进一步研究。

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