Resources Conservation and Recycling最新文献

英文中文

Addressing global environmental consequences of China's grain imports 解决中国粮食进口对全球环境的影响

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-02-03 DOI: 10.1016/j.resconrec.2026.108827

Wang Jian , Li Fei , Wang Yibin

Developing grain import strategies to alleviate the pressure of China’s imports on global environment is an important sustainability challenge in the coming decades; however, insufficient attention has been paid to the net impact on the global environment and the trade-off between different environmental consequences. Therefore, this study employed the WITCH-GLOBIOM and GAEZ models to evaluate the net environmental impact of China's future grain imports under different import strategies—keep status quo (KSQ), greenhouse gas (GHG) emission reduction (GER), and aims at cropland saving (CLS)—and proposed a sustainable import strategy. It is found that China’s grain imports will peak in 2035 at around 26.07∼160.8 Mt. Compared with domestic production, import of grains excluding rice (CER) is projected to cumulatively reduce GHG emissions by 59.96∼75.52 Mt CO₂eq during 2021–2050, while rice imports will lead to an increase of -5.32∼59.83 Mt CO₂eq. Imported grains will consume about 1.86–12.6 Mha more cropland than domestic production, which increases the risk of global deforestation and grassland clearing. The trade-offs between GHG emissions and cropland saving can be addressed by adopting a cropland-saving strategy for CER imports and a GHG emission reduction strategy for rice imports. Producing more rice domestically would both reduce stress on the global environment and increase China’s food self-sufficiency. This study aims to identify and compare environmentally preferable import patterns and propose a more sustainable strategy portfolio under multiple scenarios.

制定粮食进口战略以减轻中国进口对全球环境的压力是未来几十年可持续性的重要挑战；然而，对全球环境的净影响和不同环境后果之间的权衡没有得到足够的重视。因此，本研究采用WITCH-GLOBIOM和GAEZ模型对中国未来粮食进口在保持现状（KSQ）、减少温室气体（GHG）排放（GER）和以节约耕地（CLS）为目标的不同进口策略下的净环境影响进行了评估，并提出了可持续进口策略。研究发现，中国的粮食进口量将在2035年达到峰值，约为26.07 ~ 1.608亿吨。与国内产量相比，2021-2050年期间，预计不含大米的谷物进口将累计减少温室气体排放59.96 ~ 75.52亿吨二氧化碳当量，而大米进口将导致-5.32 ~ 59.83亿吨二氧化碳当量的增加。进口粮食将比国内生产多消耗约1.86-12.6亿公顷的耕地，这增加了全球森林砍伐和草地清理的风险。温室气体排放和节约耕地之间的权衡可以通过对CER进口采取节约耕地战略和对大米进口采取温室气体减排战略来解决。在国内生产更多的大米既可以减轻对全球环境的压力，又可以提高中国的粮食自给自足。本研究旨在识别和比较环境友好的进口模式，并在多种情景下提出更可持续的战略组合。

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引用次数: 0

Building inequality: How construction materials shape service provision and socio-economic divides in Lima 建筑不平等：建筑材料如何影响利马的服务提供和社会经济鸿沟

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-02-02 DOI: 10.1016/j.resconrec.2026.108815

Alessia Linares-Capurro , Úrsula Cárdenas-Mamani , Ramzy Kahhat , Tomer Fishman

Urban infrastructure is crucial for socio-economic development, yet the link between construction material stocks and societal needs in rapidly growing Global South cities remains insufficiently understood. This study conducts a spatially explicit analysis of Lima, Peru, mapping material stocks for buildings dedicated to shelter, education, healthcare, and collective amenities, and relates them to Decent Living Standard (DLS) thresholds and income levels. Results show that heavily populated, low-income, informal areas accumulate greater material stocks but suffer from poorer access to essential services, driven primarily by population demand. In higher-income zones, per-capita living space becomes more significant. This reveals socio-metabolic inequality, as material-intensive expansion in marginalized neighborhoods does not translate into improved well-being. Service privatization and informality exacerbate unequal access. The study concludes by recommending additional factors for future research to refine the understanding of material stocks and service provision relationships in urban contexts.

城市基础设施对社会经济发展至关重要，但在快速增长的全球南方城市中，建筑材料库存与社会需求之间的联系仍未得到充分认识。本研究对秘鲁利马进行了空间分析，绘制了用于住房、教育、医疗和集体设施的建筑材料储量，并将其与体面生活标准（DLS）阈值和收入水平联系起来。结果表明，人口稠密、低收入、非正规地区积累了更多的物质储备，但主要受人口需求的驱动，获得基本服务的机会较差。在高收入地区，人均居住空间变得更加重要。这揭示了社会代谢的不平等，因为边缘化社区的物质密集型扩张并没有转化为改善的福祉。服务私有化和非正式化加剧了服务获取的不平等。最后，本研究为未来的研究推荐了更多的因素，以完善对城市背景下物质储备和服务提供关系的理解。

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引用次数: 0

Circular Economy can substantially reduce EU steel supply chain emissions: A quality-focused circularity assessment 循环经济可以大幅减少欧盟钢铁供应链排放：以质量为中心的循环评估

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-02-02 DOI: 10.1016/j.resconrec.2026.108825

Aymara Wagner , José M. Mogollón , Paola Federica Albizzati , Anna Walker , Arnold Tukker , Davide Tonini

Steel is strategically important for the European Union. Yet, the steel system majorly contributes to greenhouse gas emissions and resource use, which can potentially be mitigated through increased circularity. Circularity, however, is constrained by a growing surplus of low-quality steel scrap, contaminated with tramp elements. This study uses Material Flow Analysis and Life Cycle Assessment to investigate the potential of ambitious circularity measures and climate-compliant energy targets to cut emissions and conserve resources across the European Union’s steel supply chain, while addressing steel quality challenges. Results show that circularity strategies complement each other, reducing production quantities and increasing recycled content. An ambitious circular steel supply chain combined with an energy transition can decrease greenhouse gas emissions by 69%–75% compared to 2020 and can comprise up to 94% recycled steel by 2050. The findings highlight circularity’s key role in meeting global net-zero climate targets, while simultaneously increasing resource independence.

钢铁对欧盟具有重要的战略意义。然而，钢铁系统主要导致温室气体排放和资源使用，这可以通过增加循环来缓解。然而，受不稳定元素污染的低质量废钢日益过剩，限制了钢材的循环利用率。本研究使用物料流分析和生命周期评估来调查雄心勃勃的循环措施和符合气候的能源目标的潜力，以减少排放和节约整个欧盟钢铁供应链的资源，同时应对钢铁质量挑战。结果表明，循环策略相互补充，减少生产数量和增加回收含量。与2020年相比，一个雄心勃勃的循环钢铁供应链与能源转型相结合，可以减少69%-75%的温室气体排放，到2050年可实现高达94%的再生钢铁。研究结果强调了循环在实现全球净零气候目标，同时提高资源独立性方面的关键作用。

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引用次数: 0

Corrigendum to ‘Food waste shock for reducing methane emissions from sewer pipelines’ “减少污水管道甲烷排放的厨余冲击”的勘误表

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-31 DOI: 10.1016/j.resconrec.2026.108820

Mohamadali Mohit , Om Prakash , Masoud Makian , Ali Ashraf Joolaei , Xueqing Shi , Jong-Han Lee , Dong-Hoon Kim

引用次数: 0

From e-waste to resource: Identifying the optimal pre-treatment for copper recovery from waste PCBs 从电子垃圾到资源：确定从废弃多氯联苯中回收铜的最佳预处理方法

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-31 DOI: 10.1016/j.resconrec.2026.108821

Moisés Gómez , Daniel Peña-Torres , Melanie Colet-Lagrille , Katherine Jaramillo , I.M.S.K. Ilankoon , Xianlai Zeng

The effective recovery of copper from waste printed circuit boards (WPCBs) is crucial for promoting circularity in the electronic sector and mitigating resource loss. This study identifies and evaluates thirteen pre-treatment methods—classified as mechanical, thermal, chemical, and innovative—using 23 technical, environmental, and economic indicators. A multi-criteria decision analysis (based on the Technique for Order of Preference by Similarity to Ideal Solutions, TOPSIS) was applied under four weighting scenarios to reflect different prioritisation strategies. Results show that automated disassembly consistently ranks highest when technical and environmental performance is prioritised, while manual dismantling prevails under cost-sensitive conditions. Sensitivity analysis confirms the robustness of these rankings, highlighting trade-offs between efficiency, environmental impact, and economic feasibility. Although still mostly at the laboratory scale, automated disassembly shows strong potential for efficient, low-impact copper recovery, and scaling with artificial intelligence (AI) and robotics could drive sustainable e-waste management and ease copper supply constraints.

从废弃印刷电路板（wpcb）中有效回收铜对于促进电子行业的循环利用和减少资源损失至关重要。本研究使用23项技术、环境和经济指标，确定并评估了13种预处理方法——分为机械、热、化学和创新。多标准决策分析（基于理想解决方案相似性偏好排序技术，TOPSIS）在四种加权情景下应用，以反映不同的优先级策略。结果表明，当技术和环境性能优先考虑时，自动拆卸始终排名最高，而在成本敏感的条件下，人工拆卸占主导地位。敏感性分析证实了这些排名的稳健性，突出了效率、环境影响和经济可行性之间的权衡。尽管自动化拆卸仍主要处于实验室规模，但它显示出高效、低影响铜回收的巨大潜力，而人工智能（AI）和机器人技术的扩展可以推动可持续的电子废物管理，并缓解铜供应限制。

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引用次数: 0

Life-cycle assessment and techno-economic analysis of negative carbon sustainable aviation fuels from paper sludge 造纸污泥负碳可持续航空燃料的生命周期评价及技术经济分析

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-31 DOI: 10.1016/j.resconrec.2026.108824

Jiawei Huang, Yinqiao Wang, Sunkyu Park, Kai Lan

Paper sludge, a solid waste from paper mills, is a promising feedstock for producing sustainable bioproducts and decarbonizing the pulp and paper industry. This study developed a life cycle assessment and techno-economic analysis to explore the environmental and economic feasibility of sustainable aviation fuel (SAF) produced from paper sludge with carbon capture and storage (CCS). The analysis is integrated with full-scale process design and rigorous simulation models developed in Aspen Plus. Our results show that, with CCS, the global warming potential (GWP) of SAF reaches negative carbon at –166.4 to –108.7 g CO₂eq/MJ with a minimum fuel selling price (MFSP) of $8.0–$10.0/gasoline gallon equivalent (GGE). Without CCS, the GWP increases to 38.8–71.6 g CO₂eq/MJ, but the MFSP decreases to $5.2–$7.0/GGE. SAF production from paper sludge with CCS offers a potential solution to advance the decarbonization of the aviation sector and pulp and paper industries toward net-zero emissions.

造纸污泥是一种来自造纸厂的固体废物，是生产可持续生物产品和脱碳制浆造纸工业的有前途的原料。本研究开发了生命周期评估和技术经济分析，以探索采用碳捕获和储存（CCS）技术从纸污泥中生产可持续航空燃料（SAF）的环境和经济可行性。该分析与Aspen Plus开发的全尺寸工艺设计和严格的仿真模型相结合。我们的研究结果表明，采用CCS， SAF的全球变暖潜能值（GWP）在- 166.4至- 108.7 g CO2eq/MJ时达到负碳，最低燃料销售价格（MFSP）为8.0 - 10.0美元/汽油加仑当量（GGE）。没有CCS， GWP增加到38.8 ~ 71.6 g CO2eq/ GGE，而MFSP降低到5.2 ~ 7.0美元/GGE。利用CCS技术从纸污泥中生产SAF，为推动航空业和纸浆造纸行业实现净零排放的脱碳提供了一个潜在的解决方案。

引用次数: 0

Global greenhouse gas emissions from coal-fired power plants 燃煤电厂的全球温室气体排放

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-31 DOI: 10.1016/j.resconrec.2026.108808

Mikalai Filonchyk , Michael P. Peterson , Haowen Yan , Liang Zhou , Lifeng Zhang , Yi He , Shuwen Yang

Coal-fired power plants are one of the primary sources of greenhouse gas (GHG) emissions worldwide, releasing approximately 13.6939 GtCO₂eq annually. This study analyses GHG emissions from 2422 coal-fired power plants (6525 units) with a total installed capacity of 2125 GW. Using a bottom-up approach, CO₂, CH₄, and N₂O emissions are calculated based on individual plant characteristics, including capacity, coal type, and load factor. The findings indicate a predominance of subcritical coal-fired power plants, the least efficient, with specific emissions of 6.95 MtCO₂eq/GW. Bituminous coal is the largest emission source, accounting for 41 % of global GHG emissions from coal power. Significant regional disparities were identified with over 70 % of global coal power emissions originating from China, India, and the United States. China alone accounts for more than half (52 %) of total emissions. Special attention is given to power plants using unknown types of coal that are responsible for 31 % of emissions, highlighting substantial gaps in monitoring systems. The results indicate that while advanced coal technologies, including ultra-supercritical units and carbon capture and storage (CCS), can reduce emissions to some extent, their mitigation potential within the existing coal fleet remains limited relative to the goals of the Paris Agreement.

燃煤电厂是全球温室气体（GHG）排放的主要来源之一，每年释放约13.6939亿吨二氧化碳当量。本研究分析了总装机容量为2125吉瓦的2422座燃煤电厂（6525台）的温室气体排放情况。采用自下而上的方法，CO2、CH4和N2O的排放量是基于单个工厂的特性计算的，包括产能、煤炭类型和负荷系数。研究结果表明，亚临界燃煤电厂占主导地位，效率最低，具体排放量为6.95 MtCO2eq/GW。烟煤是最大的排放源，占全球煤电温室气体排放量的41%。研究发现，全球超过70%的煤电排放来自中国、印度和美国，存在显著的地区差异。仅中国就占了总排放量的一半以上（52%）。特别关注的是使用未知类型煤炭的发电厂，这些发电厂占排放量的31%，突出了监测系统的巨大差距。结果表明，虽然包括超超临界装置和碳捕集与封存（CCS）在内的先进煤炭技术可以在一定程度上减少排放，但相对于《巴黎协定》的目标，它们在现有煤炭船队中的减排潜力仍然有限。

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引用次数: 0

PRecTimber 2.0: Forecasting quantitative and qualitative potentials for wood circularity in Germany, Finland, and Sweden pretimber 2.0：预测德国、芬兰和瑞典木材循环的数量和质量潜力

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-30 DOI: 10.1016/j.resconrec.2026.108813

Vijhay Krisshna Mahenthren , Gabriele Weber-Blaschke , Mark Hughes , Michael Risse

National bioeconomy strategies in Germany, Finland, and Sweden are expected to increase wood demand, putting pressure on already strained forest resources. Circularity of wood products can reduce this demand by improving resource efficiency, but barriers like uncertain availability and quality of post-consumer wood hinder implementation. This study optimizes and extends the PRecTimber model to forecast post-consumer wood quantities and qualities in Germany (revised with quality information), Finland, and Sweden. By 2050, predicted post-consumer wood volumes are 14.11 Mt in Germany, 1.64 Mt in Finland, and 2.74 Mt in Sweden, mainly from the construction sector. Our quality assessment methodology with scenario analysis (status quo S0 and improved scenarios S1–S2 with +10 and +20 percentage-point gains in key quality factors) reveals that the shares of post-consumer construction sawnwood suitable for lifespan extension and material recycling, respectively, are 25 % and 59 % under S0, 36 % and 50 % under S1, and 49 % and 38 % under S2. Leveraging these quantity and quality insights, policy reforms can support industries and technological innovation to optimize the use of post-consumer wood.

德国、芬兰和瑞典的国家生物经济战略预计将增加木材需求，给已经紧张的森林资源带来压力。木材产品的循环利用可以通过提高资源效率来减少这种需求，但消费后木材的可得性和质量不确定等障碍阻碍了实施。本研究优化并扩展了PRecTimber模型，以预测德国（根据质量信息修订）、芬兰和瑞典的消费后木材数量和质量。到2050年，预计消费后的木材量在德国为1411万吨，芬兰为164万吨，瑞典为274万吨，主要来自建筑部门。我们的质量评估方法与情景分析（现状S0和改进情景S1 - S2，关键质量因素提高10个百分点和20个百分点）显示，消费后建筑锯木适用于延长使用寿命和材料回收的比例分别为S0下的25%和59%，S1下的36%和50%，S2下的49%和38%。利用这些数量和质量的见解，政策改革可以支持行业和技术创新，以优化消费后木材的使用。

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引用次数: 0

Reconfiguring China’s interprovincial rice distribution to support low-carbon goals under climate change 重新配置中国省际稻米分配，支持气候变化下的低碳目标

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-30 DOI: 10.1016/j.resconrec.2026.108816

Jintao Yang , Fang-He Zhao , Manchun Li , Penghui Jiang , Zhepeng Hu

Current understanding of low-carbon food distribution is limited by the lack of observed grain flow data and forward-looking scenario analysis. In this study, we construct China’s interprovincial rice distribution network for 2020 using 30,524 observed trade records. We then project provincial rice supply and demand dynamics for 2030 under four Shared Socioeconomic Pathway (SSP) scenarios, employing the Global Agro-Ecological Zones (GAEZ) and Future Land Use Simulation (FLUS) models. Subsequently, a scenario-based linear programming framework is applied to explore optimized low-carbon trade configurations. Results indicate that, compared to simulations focused solely on minimizing transport costs, observed trade flows capture substantial long-distance interprovincial exchanges that cost-based models tend to overlook. Moreover, optimized flows could reduce total carbon emissions from rice distribution by 16.1%-20.5% in 2030. These findings offer robust empirical and modeling evidence to inform the reconfiguration of grain distribution systems and support region-specific adaptation strategies under future climate change.

由于缺乏观测到的粮食流动数据和前瞻性情景分析，目前对低碳食品分布的认识受到限制。在本研究中，我们利用30,524个观察到的贸易记录构建了2020年中国省际大米分销网络。然后，我们利用全球农业生态区（GAEZ）和未来土地利用模拟（FLUS）模型，在四种共享社会经济路径（SSP）情景下预测了2030年各省稻米供需动态。随后，应用基于场景的线性规划框架，探索优化的低碳贸易配置。结果表明，与只关注最小化运输成本的模拟相比，观察到的贸易流量捕获了基于成本的模型往往忽略的大量长途省际交流。此外，优化后的流程可在2030年将大米配送过程中的碳排放总量减少16.1%-20.5%。这些发现为粮食分配系统的重新配置提供了强有力的经验和模型证据，并为未来气候变化下的区域适应策略提供了支持。

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引用次数: 0

Potential SCMs for low-carbon concrete in Australia: Cradle-to-gate LCA and cost perspectives 澳大利亚低碳混凝土的潜在scm：从摇篮到闸门的LCA和成本观点

IF 10.9 1区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Resources Conservation and Recycling

Pub Date : 2026-01-29 DOI: 10.1016/j.resconrec.2026.108823

Yulin Patrisia , Nghia P. Tran , Chamila Gunasekara , David W. Law , Tuan D. Ngo , Sujeeva Setunge

Concrete production is a major source of global emissions, and incorporating supplementary cementitious materials (SCMs) offers a pathway to lower carbon construction. This study evaluates the life cycle and cost performance of eight alternative SCMs in Australia: recycled concrete powder (RCP), clay brick powder (CBP), recycled glass powder (RGP), lithium slag powder (LSP), red mud powder (RMP), limestone calcined clay (LC2), steel slag powder (SSP) and pond ash (PA). The study considers 83 mixes containing these SCMs, as reported in the literature, which achieved 30–40 MPa. The results showed that LC2 achieved the lowest GWP (283 kg CO₂-eq/m³; 8.22 kg CO₂-eq/MPa) and the lowest cost (∼133 AU$/m³). RGP and LSP also reduced ADPF to 71–70 MJ/MPa, while RMP and LSP achieved the lowest strength-normalised costs (3.8–3.9 AU$/MPa). CBP and PA performed worse due to poor reactivity and higher costs (>4.3 AU$/MPa). These findings highlight the potential of LC2, RGP, LSP, and RMP to support circular, low-carbon concrete in Australia.

混凝土生产是全球排放的主要来源，添加补充胶凝材料（scm）为低碳建筑提供了一条途径。本研究评估了澳大利亚8种可替代的SCMs的生命周期和性价比：再生混凝土粉（RCP）、粘土砖粉（CBP）、再生玻璃粉（RGP）、锂渣粉（LSP）、赤泥粉（RMP）、石灰石煅烧粘土（LC2）、钢渣粉（SSP）和池塘灰（PA）。据文献报道，该研究考虑了83种含有这些SCMs的混合物，达到30-40 MPa。结果表明，LC2具有最低的GWP （283 kg CO₂-eq/m³；8.22 kg CO₂-eq/MPa）和最低的成本（约133 AU$/m³）。RGP和LSP也将ADPF降低到71-70 MJ/MPa，而RMP和LSP的强度标准化成本最低（3.8-3.9 AU$/MPa）。由于反应性差和成本较高（>；4.3澳元/兆帕），CBP和PA表现较差。这些发现突出了LC2、RGP、LSP和RMP在澳大利亚支持循环低碳混凝土方面的潜力。

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