Resources Conservation and Recycling最新文献_第5页

Toward circular, value-added recycling of modified-poly(ethylene terephthalate): Microstructure and performance across multiple fused particle fabrication cycles 改性聚对苯二甲酸乙酯的循环增值回收：在多个熔合颗粒制造周期中的微观结构和性能

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

Resources Conservation and Recycling

Pub Date : 2026-01-09 DOI: 10.1016/j.resconrec.2026.108781

Mohammad Sagor Hosen , Heon E. Park , Mark P. Staiger

Dimensional instability remains a principal concern in extrusion-based additive manufacturing, driven by volumetric shrinkage stemming from microstructural changes, especially throughout closed-loop recycling of semicrystalline polymers such as poly(ethylene terephthalate) (PET). The present study investigates the microstructural evolution and corresponding volumetric shrinkage of modified-PET (mPET) quantifying key microstructural contents (i.e., degree of crystallinity, and mobile and rigid amorphous fractions) across 4 fused particle fabrication cycles for the first time. The results reveal proto-spherullite formation in recycled mPET microstructure and associated microstructural changes that cause progressive volumetric shrinkage. The degree of crystallinity and rigid amorphous content are found to vary as a function of the FPF cycle number. Notably, recycled mPET exhibited an increase in density from 1.23 to 1.30 g/cm³ and volumetric shrinkage from 0 to 4.8 % following 4 FPF cycles. The study observations have important implications for predicting dimensional accuracy in 3D-printed parts manufactured from both virgin and recycled semicrystalline polymers using extrusion-based additive manufacturing.

尺寸不稳定性仍然是基于挤压的增材制造的主要问题，由微观结构变化引起的体积收缩驱动，特别是在半晶聚合物（如聚对苯二甲酸乙酯）（PET）的闭环回收过程中。本研究研究了改性pet （mPET）的微观结构演变和相应的体积收缩率，首次量化了4个熔融颗粒制造周期中的关键微观结构含量（即结晶度、可移动和刚性非晶部分）。结果揭示了再生mPET微观结构中原始球晶的形成和相关的微观结构变化导致了渐进的体积收缩。发现结晶度和刚性非晶含量随FPF循环数的变化而变化。值得注意的是，经过4次FPF循环后，再生mPET的密度从1.23 g/cm³增加到1.30 g/cm³，体积收缩率从0增加到4.8%。研究结果对于预测3d打印部件的尺寸精度具有重要意义，这些部件是使用基于挤压的增材制造技术由原始和回收的半晶聚合物制造的。

{"title":"Toward circular, value-added recycling of modified-poly(ethylene terephthalate): Microstructure and performance across multiple fused particle fabrication cycles","authors":"Mohammad Sagor Hosen , Heon E. Park , Mark P. Staiger","doi":"10.1016/j.resconrec.2026.108781","DOIUrl":"10.1016/j.resconrec.2026.108781","url":null,"abstract":"<div><div>Dimensional instability remains a principal concern in extrusion-based additive manufacturing, driven by volumetric shrinkage stemming from microstructural changes, especially throughout closed-loop recycling of semicrystalline polymers such as poly(ethylene terephthalate) (PET). The present study investigates the microstructural evolution and corresponding volumetric shrinkage of modified-PET (mPET) quantifying key microstructural contents (<em>i.e.</em>, degree of crystallinity, and mobile and rigid amorphous fractions) across 4 fused particle fabrication cycles for the first time. The results reveal proto-spherullite formation in recycled mPET microstructure and associated microstructural changes that cause progressive volumetric shrinkage. The degree of crystallinity and rigid amorphous content are found to vary as a function of the FPF cycle number. Notably, recycled mPET exhibited an increase in density from 1.23 to 1.30 g/cm³ and volumetric shrinkage from 0 to 4.8 % following 4 FPF cycles. The study observations have important implications for predicting dimensional accuracy in 3D-printed parts manufactured from both virgin and recycled semicrystalline polymers using extrusion-based additive manufacturing.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"228 ","pages":"Article 108781"},"PeriodicalIF":10.9,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145915293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Material performance, economic feasibility, and greenhouse gas emissions of natural pozzolans in concrete: A review and meta-analysis 混凝土中天然火山灰的材料性能、经济可行性和温室气体排放：综述和荟萃分析

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

Resources Conservation and Recycling

Pub Date : 2026-01-09 DOI: 10.1016/j.resconrec.2025.108769

Asahi Amitani, Sabbie A. Miller

There is an urgent need to decarbonize cement and concrete production. One of the most rapidly implementable strategies is to partially replace Portland cement (PC) in concrete with supplementary cementitious materials (SCMs), such as natural pozzolans (NPs), which are globally abundant but underused. Current studies have focused on only one or a subset of NPs and used inconsistent approaches for estimating their environmental impacts and production costs, hindering the ability to compare these SCMs and determine their best applications. We systematically review NPs—including calcined clays, diatomaceous earth, pumice, scoria, and tuff—to examine both their composition as well as their contributions to fresh and hardened concrete properties. We use a harmonized assessment approach to examine greenhouse gas (GHG) emissions and costs from producing concrete with these NPs, and we concurrently examine experimental results from the review with these emissions and cost findings. Our results show that these NPs can offer necessary composition, improve durability, and offer desired contributions to strength with proper mixture proportioning. On average, NP concretes resulted in 7–24 % GHG emissions reduction, while lowering consumption of the costliest constituent, PC. These results demonstrate that, with appropriate selection and processing, NPs offer a scalable, cost-effective route to partial PC replacement, advancing concrete decarbonization.

目前迫切需要对水泥和混凝土进行脱碳生产。最快速实施的策略之一是用补充胶凝材料（SCMs）部分取代混凝土中的波特兰水泥（PC），例如全球丰富但未充分利用的天然火山灰（NPs）。目前的研究只关注一种或一部分NPs，并且使用了不一致的方法来估计其环境影响和生产成本，从而阻碍了比较这些SCMs并确定其最佳应用的能力。我们系统地回顾了nps——包括煅烧粘土、硅藻土、浮石、矿渣和凝灰岩——来研究它们的组成以及它们对新混凝土和硬化混凝土性能的贡献。我们使用统一的评估方法来检查使用这些NPs生产混凝土的温室气体（GHG）排放和成本，并同时使用这些排放和成本调查结果来检查审查的实验结果。我们的研究结果表明，这些NPs可以提供必要的成分，提高耐久性，并通过适当的混合比例提供所需的强度贡献。平均而言，NP混凝土减少了7 - 24%的温室气体排放，同时降低了最昂贵的成分PC的消耗。这些结果表明，通过适当的选择和处理，NPs为部分PC替代提供了一种可扩展的、具有成本效益的途径，促进了混凝土的脱碳。

{"title":"Material performance, economic feasibility, and greenhouse gas emissions of natural pozzolans in concrete: A review and meta-analysis","authors":"Asahi Amitani, Sabbie A. Miller","doi":"10.1016/j.resconrec.2025.108769","DOIUrl":"10.1016/j.resconrec.2025.108769","url":null,"abstract":"<div><div>There is an urgent need to decarbonize cement and concrete production. One of the most rapidly implementable strategies is to partially replace Portland cement (PC) in concrete with supplementary cementitious materials (SCMs), such as natural pozzolans (NPs), which are globally abundant but underused. Current studies have focused on only one or a subset of NPs and used inconsistent approaches for estimating their environmental impacts and production costs, hindering the ability to compare these SCMs and determine their best applications. We systematically review NPs—including calcined clays, diatomaceous earth, pumice, scoria, and tuff—to examine both their composition as well as their contributions to fresh and hardened concrete properties. We use a harmonized assessment approach to examine greenhouse gas (GHG) emissions and costs from producing concrete with these NPs, and we concurrently examine experimental results from the review with these emissions and cost findings. Our results show that these NPs can offer necessary composition, improve durability, and offer desired contributions to strength with proper mixture proportioning. On average, NP concretes resulted in 7–24 % GHG emissions reduction, while lowering consumption of the costliest constituent, PC. These results demonstrate that, with appropriate selection and processing, NPs offer a scalable, cost-effective route to partial PC replacement, advancing concrete decarbonization.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"228 ","pages":"Article 108769"},"PeriodicalIF":10.9,"publicationDate":"2026-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145915292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Discover how interprovincial electricity transmission policies on transforming the regional variations in grid emission factors in China 探索省际输电政策如何改变中国电网排放因子的区域差异

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

Resources Conservation and Recycling

Pub Date : 2026-01-08 DOI: 10.1016/j.resconrec.2025.108773

Boda Xin , Yiyun Yu , Meiyi Li , Yiming Gu , Yahui Zhang , Junfeng Wang

Interprovincial electricity transmission is vital for decarbonizing China's power system, yet its impact on Grid Emission Factors (GEFs) remains underexplored. This study employs the Medium-to-Long-Term Provincial Grid Emission Factor Model (MLGEFM) to simulate provincial GEFs and carbon trajectories from 2020 to 2035 under four transmission scenarios. Results reveal significant national decarbonization, with the average GEF falling from 0.559 to 0.320 tCO₂/MWh by 2035 under the Emission Targeted Scenario (ETS). However, transmission mechanisms exert heterogeneous regional impacts. While scale expansion reduces GEFs in central and southern China (e.g., -20.0% in Henan), it inadvertently raises GEFs in north and east China (e.g., +24.7% in Beijing). In contrast, structural optimization under ETS further reduces GEFs by 7.6% in Beijing and 13.1% in Shanghai. Although all scenarios achieve a national carbon peak around 2030, ETS achieves the optimal trajectory with a lower peak magnitude and steeper decline.

省际电力传输对中国电力系统的脱碳至关重要，但其对电网排放因子的影响仍未得到充分探讨。本文采用中长期省级电网排放因子模型（MLGEFM），模拟了2020 - 2035年四种输电情景下的省级电网排放因子和碳排放轨迹。结果显示，在排放目标情景（ETS）下，到2035年，全国平均GEF从0.559下降到0.320 tCO₂/MWh。然而，传播机制具有异质性的区域影响。虽然规模扩张降低了中国中部和南部的全球环境融资（例如，河南-20.0%），但它无意中提高了中国北部和东部的全球环境融资（例如，北京+24.7%）。相比之下，碳排放交易体系下的结构优化进一步减少了北京7.6%和上海13.1%的全球环境基金。尽管所有情景都在2030年左右达到全国碳排放峰值，但ETS实现了峰值幅度更小、下降幅度更大的最佳轨迹。

{"title":"Discover how interprovincial electricity transmission policies on transforming the regional variations in grid emission factors in China","authors":"Boda Xin , Yiyun Yu , Meiyi Li , Yiming Gu , Yahui Zhang , Junfeng Wang","doi":"10.1016/j.resconrec.2025.108773","DOIUrl":"10.1016/j.resconrec.2025.108773","url":null,"abstract":"<div><div>Interprovincial electricity transmission is vital for decarbonizing China's power system, yet its impact on Grid Emission Factors (GEFs) remains underexplored. This study employs the Medium-to-Long-Term Provincial Grid Emission Factor Model (MLGEFM) to simulate provincial GEFs and carbon trajectories from 2020 to 2035 under four transmission scenarios. Results reveal significant national decarbonization, with the average GEF falling from 0.559 to 0.320 tCO₂/MWh by 2035 under the Emission Targeted Scenario (ETS). However, transmission mechanisms exert heterogeneous regional impacts. While scale expansion reduces GEFs in central and southern China (e.g., -20.0% in Henan), it inadvertently raises GEFs in north and east China (e.g., +24.7% in Beijing). In contrast, structural optimization under ETS further reduces GEFs by 7.6% in Beijing and 13.1% in Shanghai. Although all scenarios achieve a national carbon peak around 2030, ETS achieves the optimal trajectory with a lower peak magnitude and steeper decline.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108773"},"PeriodicalIF":10.9,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data-driven optimization for sustainable copper recovery and electrolyte recycling in hydrometallurgical processes 湿法冶金过程中可持续铜回收和电解液循环的数据驱动优化

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

Resources Conservation and Recycling

Pub Date : 2026-01-08 DOI: 10.1016/j.resconrec.2026.108782

Jiaqi Liao , Han Cheng , Shibing Cai , Jincheng Lu , Zhezhen Yan , Ning Duan , Fuyuan Xu

To address challenges in precise copper concentration prediction and optimal electrolyte diversion in copper hydrometallurgy, this study develops a multi-model framework integrating machine learning (ML) prediction, mechanistic constraints, and collaborative optimization. Among 11 algorithms, the Bayesian-optimized extremely randomized trees (ET) model outperforms others in predicting circulating tank effluent copper concentration, achieving an R² of 0.839, a MAPE of 1.20%, and 18.68-fold higher accuracy than mechanistic models. SHAP analysis identifies key factors influencing copper concentration. Leveraging ET predictions and mechanistic material conservation, a strategy encompassing dynamic benchmarks, segmented diversion, and closed-loop regulation enables real-time optimization of copper concentration and diversion through two-stage electrowinning, with annual energy savings of 4.72 million kWh. This multi-model methodology provides a replicable paradigm for the intelligent transformation of copper hydrometallurgy, boosting resource conservation and recycling in metallurgy. Its cross-model integration extends to multi-objective optimization in other complex metallurgical processes, offering far-reaching environmental and economic benefits.

为了解决铜湿法冶金中精确铜浓度预测和最佳电解质转移的挑战，本研究开发了一个集成机器学习（ML）预测、机械约束和协同优化的多模型框架。在11种算法中，贝叶斯优化的极度随机树（ET）模型在预测循环水箱出水铜浓度方面优于其他算法，R2为0.839，MAPE为1.20%，准确率比机械模型高18.68倍。SHAP分析确定了影响铜浓度的关键因素。利用ET预测和机械材料节约，一种包含动态基准、分段导流和闭环调节的策略可以通过两阶段电积实现铜浓度和导流的实时优化，每年可节省472万千瓦时的能源。这种多模型方法为铜湿法冶金的智能化改造提供了可复制的范例，促进了冶金资源的节约和循环利用。它的跨模型集成扩展到其他复杂冶金过程的多目标优化，提供深远的环境和经济效益。

{"title":"Data-driven optimization for sustainable copper recovery and electrolyte recycling in hydrometallurgical processes","authors":"Jiaqi Liao , Han Cheng , Shibing Cai , Jincheng Lu , Zhezhen Yan , Ning Duan , Fuyuan Xu","doi":"10.1016/j.resconrec.2026.108782","DOIUrl":"10.1016/j.resconrec.2026.108782","url":null,"abstract":"<div><div>To address challenges in precise copper concentration prediction and optimal electrolyte diversion in copper hydrometallurgy, this study develops a multi-model framework integrating machine learning (ML) prediction, mechanistic constraints, and collaborative optimization. Among 11 algorithms, the Bayesian-optimized extremely randomized trees (ET) model outperforms others in predicting circulating tank effluent copper concentration, achieving an R<sup>2</sup> of 0.839, a MAPE of 1.20%, and 18.68-fold higher accuracy than mechanistic models. SHAP analysis identifies key factors influencing copper concentration. Leveraging ET predictions and mechanistic material conservation, a strategy encompassing dynamic benchmarks, segmented diversion, and closed-loop regulation enables real-time optimization of copper concentration and diversion through two-stage electrowinning, with annual energy savings of 4.72 million kWh. This multi-model methodology provides a replicable paradigm for the intelligent transformation of copper hydrometallurgy, boosting resource conservation and recycling in metallurgy. Its cross-model integration extends to multi-objective optimization in other complex metallurgical processes, offering far-reaching environmental and economic benefits.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108782"},"PeriodicalIF":10.9,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recycling high-level liquid waste into covalent organic framework confined unsymmetrical single Pd-N2 site toward H2O2 photosynthesis 将高放废液转化为限制不对称单Pd-N2位点的共价有机框架进行H2O2光合作用

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

Resources Conservation and Recycling

Pub Date : 2026-01-08 DOI: 10.1016/j.resconrec.2026.108783

Zhi Gao , Ruitao You , Kecheng Pan , Qingsheng Huang , Zhenzhen Xu , Long-Shuai Zhang , Jian-Ping Zou

Herein, we show a bioinspired nitrogen-rich covalent organic framework (COF_TGTp) with high acid stability and excellent radiation resistance in simulated high-level liquid waste (HLLW). It exhibits the intriguing local self-adaptive behavior to precisely recognize Pd²⁺ in 3 M HNO₃, achieving a high adsorption capacity (317.4 mg g^-1) and >99.98% recovery efficiency. Importantly, even in 17 competing ions, the COF_TGTp still shows the remarkable Pd²⁺ selectivity and outstanding K_d value. EXAFS results disclose that the Pd²⁺ confined in COF_TGTp interlayer displays the unsymmetrical Pd-N₂ single-site pattern. Noticeably, the Pd²⁺-confined COF_TGTp obtained from HLLW effectively drives O₂-to-H₂O₂ photosynthesis (3002 µmol g^-1 h^-1). The mechanism studies confirm that the unsymmetrical Pd-N₂ site favors the formation of key *HOOH intermediate. The recovery of Pd from HLLW to make a photocatalyst is proposed for the first time, which may stimulate the research into the design of novel COFs to upcycle metal waste into functional, catalytic materials.

在此，我们在模拟高放废液（HLLW）中展示了一种具有高酸稳定性和优异耐辐射性的富氮共价有机骨架（COFTGTp）。在3 M HNO3中精确识别Pd2+，具有良好的局部自适应行为，吸附量高达317.4 mg g-1，回收率高达99.98%。重要的是，即使在17个竞争离子中，COFTGTp仍然表现出显著的Pd2+选择性和出色的Kd值。EXAFS结果表明，限制在COFTGTp层中的Pd2+表现出不对称的Pd-N2单位点模式。值得注意的是，从HLLW中获得的Pd2+限制性COFTGTp有效地驱动了o2 - h2o2的光合作用（3002µmol g-1 h-1）。机理研究证实，Pd-N2位点的不对称有利于关键*HOOH中间体的形成。本文首次提出了从高废渣中回收Pd制备光催化剂的方法，这可能会激发新型COFs的设计研究，从而将金属废物升级为功能催化材料。

{"title":"Recycling high-level liquid waste into covalent organic framework confined unsymmetrical single Pd-N2 site toward H2O2 photosynthesis","authors":"Zhi Gao , Ruitao You , Kecheng Pan , Qingsheng Huang , Zhenzhen Xu , Long-Shuai Zhang , Jian-Ping Zou","doi":"10.1016/j.resconrec.2026.108783","DOIUrl":"10.1016/j.resconrec.2026.108783","url":null,"abstract":"<div><div>Herein, we show a bioinspired nitrogen-rich covalent organic framework (COF<sub>TGTp</sub>) with high acid stability and excellent radiation resistance in simulated high-level liquid waste (HLLW). It exhibits the intriguing local self-adaptive behavior to precisely recognize Pd<sup>2+</sup> in 3 M HNO<sub>3</sub>, achieving a high adsorption capacity (317.4 mg g<sup>-1</sup>) and >99.98% recovery efficiency. Importantly, even in 17 competing ions, the COF<sub>TGTp</sub> still shows the remarkable Pd<sup>2+</sup> selectivity and outstanding <em>K</em><sub>d</sub> value. EXAFS results disclose that the Pd<sup>2+</sup> confined in COF<sub>TGTp</sub> interlayer displays the unsymmetrical Pd-N<sub>2</sub> single-site pattern. Noticeably, the Pd<sup>2+</sup>-confined COF<sub>TGTp</sub> obtained from HLLW effectively drives O<sub>2</sub>-to-H<sub>2</sub>O<sub>2</sub> photosynthesis (3002 µmol g<sup>-1</sup> h<sup>-1</sup>). The mechanism studies confirm that the unsymmetrical Pd-N<sub>2</sub> site favors the formation of key *HOOH intermediate. The recovery of Pd from HLLW to make a photocatalyst is proposed for the first time, which may stimulate the research into the design of novel COFs to upcycle metal waste into functional, catalytic materials.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108783"},"PeriodicalIF":10.9,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying environmental impacts of circular economy approaches through life cycle assessments: A case study in materials science on ceramic matrix composites 通过生命周期评估量化循环经济方法对环境的影响：以陶瓷基复合材料材料科学为例

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

Resources Conservation and Recycling

Pub Date : 2026-01-08 DOI: 10.1016/j.resconrec.2025.108776

Florian Halter , Lars Wietschel , Denny Schüppel , Nicoletta Narres , Anna Schneller , Kevin Christopher Dorling , Andrea Thorenz , Dietmar Koch , Axel Tuma

The circular economy and the use of lightweight composites are two promising concepts for reducing resource consumption in future products. While circular economy approaches close loops and minimize resource loss, the application-specific design of composites reduces material demand. This study combines these concepts by discussing circular economy approaches for the lightweight material class of ceramic matrix composites. Suitable approaches were identified and compared using life cycle assessments to determine the environmental impact reductions. Twenty-two circular economy approaches were identified for the primary processing routes on four different life-cycle stages (circular inputs, external and internal loops, and end-of-life (EoL)). The most significant reduction is achieved by alternative input materials and EoL options, especially by using recycled carbon fibers, followed by various EoL options, such as recycling and repair processes. Combining several circular economy approaches reduces the current global warming potential of processing routes for CMC by up to 94%.

循环经济和轻质复合材料的使用是减少未来产品资源消耗的两个有前途的概念。当循环经济接近闭环并最大限度地减少资源损失时，复合材料的特定应用设计减少了材料需求。本研究结合了这些概念，讨论了陶瓷基复合材料轻量化材料类的循环经济方法。利用生命周期评估确定和比较合适的方法，以确定减少环境影响。在四个不同的生命周期阶段（循环输入、外部和内部循环以及生命周期结束），为主要加工路线确定了22种循环经济方法。最显著的减少是通过替代输入材料和EoL方案实现的，特别是通过使用再生碳纤维，其次是各种EoL方案，如回收和修复过程。结合几种循环经济方法，可将CMC加工路线目前的全球变暖潜势降低高达94%。

{"title":"Quantifying environmental impacts of circular economy approaches through life cycle assessments: A case study in materials science on ceramic matrix composites","authors":"Florian Halter , Lars Wietschel , Denny Schüppel , Nicoletta Narres , Anna Schneller , Kevin Christopher Dorling , Andrea Thorenz , Dietmar Koch , Axel Tuma","doi":"10.1016/j.resconrec.2025.108776","DOIUrl":"10.1016/j.resconrec.2025.108776","url":null,"abstract":"<div><div>The circular economy and the use of lightweight composites are two promising concepts for reducing resource consumption in future products. While circular economy approaches close loops and minimize resource loss, the application-specific design of composites reduces material demand. This study combines these concepts by discussing circular economy approaches for the lightweight material class of ceramic matrix composites. Suitable approaches were identified and compared using life cycle assessments to determine the environmental impact reductions. Twenty-two circular economy approaches were identified for the primary processing routes on four different life-cycle stages (circular inputs, external and internal loops, and end-of-life (EoL)). The most significant reduction is achieved by alternative input materials and EoL options, especially by using recycled carbon fibers, followed by various EoL options, such as recycling and repair processes. Combining several circular economy approaches reduces the current global warming potential of processing routes for CMC by up to 94%.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108776"},"PeriodicalIF":10.9,"publicationDate":"2026-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrahigh-selective lithium adsorption from low-quality lithium sources via oxygen-enhanced fluorine-lithium affinity 通过氧增强氟锂亲和对低质量锂源的超高选择性锂吸附

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

Resources Conservation and Recycling

Pub Date : 2026-01-07 DOI: 10.1016/j.resconrec.2026.108780

Yubo Wu , Yun Wei , Xunsheng Guo , Haitao Yang , Tian Liu , Huiqin Hu , Guang Yang , Xubiao Luo , Liming Yang

Polymer-based adsorbents hold great promise for direct lithium extraction (DLE) due to their accessible structural tunability and process adaptability, yet suffer from unsatisfactory Li⁺ selectivity in low-quality lithium sources. A class of fluorine-based materials (labeled as FBM-1, FBM-2 and FBM-3) were designed and fabricated for lithium adsorption via ester-linked fluorine functional moieties. Remarkably, FBM-2 achieves an exceptional Li⁺ distribution coefficient exceeding 110 mL g^-1, presenting a 10-fold enhancement over conventional lithium adsorption materials. The introduced oxygen atoms are enabled to enhance electron cloud density at fluoride adsorption sites, with boosted Li⁺ accessibility and more negative adsorption energy. To simplify process and broaden practical application adaptability, the FBM-2 was shaped into fibrous adsorbent, with exceptional Li⁺ selectivity (α of Li⁺/Na⁺=13.37) and stability (cycle > 15 times). This work provides a valuable guidance for designing advanced polymeric materials to directly extract lithium from complex aqueous systems.

聚合物基吸附剂由于其结构可调性和工艺适应性，在直接锂提取（DLE）方面具有很大的前景，但在低质量锂源中Li+选择性不理想。设计并制备了一类氟基材料（标记为FBM-1， FBM-2和FBM-3），用于通过酯连接氟功能基团吸附锂。值得注意的是，FBM-2的Li+分布系数超过110 mL g-1，比传统的锂吸附材料提高了10倍。引入的氧原子能够增强氟吸附位点的电子云密度，提高Li+的可及性和更多的负吸附能。为了简化工艺和扩大实际应用适应性，将FBM-2制成纤维状吸附剂，具有优异的Li+选择性（Li+/Na+的α值=13.37）和稳定性（循环15次）。这项工作为设计先进的聚合物材料直接从复杂的水体系中提取锂提供了有价值的指导。

{"title":"Ultrahigh-selective lithium adsorption from low-quality lithium sources via oxygen-enhanced fluorine-lithium affinity","authors":"Yubo Wu , Yun Wei , Xunsheng Guo , Haitao Yang , Tian Liu , Huiqin Hu , Guang Yang , Xubiao Luo , Liming Yang","doi":"10.1016/j.resconrec.2026.108780","DOIUrl":"10.1016/j.resconrec.2026.108780","url":null,"abstract":"<div><div>Polymer-based adsorbents hold great promise for direct lithium extraction (DLE) due to their accessible structural tunability and process adaptability, yet suffer from unsatisfactory Li<sup>+</sup> selectivity in low-quality lithium sources. A class of fluorine-based materials (labeled as FBM-1, FBM-2 and FBM-3) were designed and fabricated for lithium adsorption via ester-linked fluorine functional moieties. Remarkably, FBM-2 achieves an exceptional Li<sup>+</sup> distribution coefficient exceeding 110 mL g<sup>-1</sup>, presenting a 10-fold enhancement over conventional lithium adsorption materials. The introduced oxygen atoms are enabled to enhance electron cloud density at fluoride adsorption sites, with boosted Li<sup>+</sup> accessibility and more negative adsorption energy. To simplify process and broaden practical application adaptability, the FBM-2 was shaped into fibrous adsorbent, with exceptional Li<sup>+</sup> selectivity (<em>α</em> of Li<sup>+</sup>/Na<sup>+</sup>=13.37) and stability (cycle > 15 times). This work provides a valuable guidance for designing advanced polymeric materials to directly extract lithium from complex aqueous systems.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108780"},"PeriodicalIF":10.9,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Global meta-analysis of bioenergy crops reveals substantial greenhouse gas mitigation potential 生物能源作物的全球荟萃分析揭示了巨大的温室气体减缓潜力

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

Resources Conservation and Recycling

Pub Date : 2026-01-07 DOI: 10.1016/j.resconrec.2026.108777

Ziyue Yu , Hang Han , Fan Zhang

Bioenergy crops offer potential for mitigating greenhouse gas emissions, although the global abatement potential across different land use types remains insufficiently researched. Based on a meta-analysis of 718 publications covering 74 species across 31 countries, this study quantified yield, GHG emissions, and mitigation potential under various land systems. Results reveal that land-crop configurations fundamentally determine GHG tradeoffs: croplands optimize synergies, (e.g., Miscanthus: 12.93 t ha⁻¹ yr⁻¹ yield, 4.14 t CO₂-eq ha⁻¹ yr⁻¹ emissions), forests increase emissions despite high productivity, and wetlands perform poorly. Random forest modeling identified key drivers (e.g., clay content for yield, rotation frequency for emissions). Long-term projections show Miscanthus maintains robust productivity and stable emissions until 2050, while uncertainty rises for other crops. Strategic prioritization recommends Miscanthus on croplands/grasslands and avoidance of high-emission systems. The results underscore that scalable bioenergy deployment aligned with Paris Agreement targets requires context-specific land-crop matching and strict avoidance of high-emission types.

生物能源作物提供了减少温室气体排放的潜力，尽管不同土地利用类型的全球减排潜力仍然没有得到充分的研究。基于对31个国家74个物种的718份出版物的荟萃分析，本研究量化了不同土地系统下的产量、温室气体排放和缓解潜力。结果表明，土地-作物配置从根本上决定了温室气体的权衡：农田优化了协同效应，（例如，芒草：12.93 t³（⁻1年）的产量，4.14 t³（⁻1年）的二氧化碳当量）；森林虽然生产力高，但增加了排放量；湿地表现不佳。随机森林模型确定了关键驱动因素（例如，影响产量的粘土含量，影响排放的轮作频率）。长期预测显示，到2050年，芒草将保持强劲的生产力和稳定的排放量，而其他作物的不确定性将上升。战略优先建议在农田/草地上种植芒草，并避免高排放系统。研究结果强调，与《巴黎协定》目标相一致的可扩展生物能源部署需要根据具体情况匹配土地作物，并严格避免高排放类型。

{"title":"Global meta-analysis of bioenergy crops reveals substantial greenhouse gas mitigation potential","authors":"Ziyue Yu , Hang Han , Fan Zhang","doi":"10.1016/j.resconrec.2026.108777","DOIUrl":"10.1016/j.resconrec.2026.108777","url":null,"abstract":"<div><div>Bioenergy crops offer potential for mitigating greenhouse gas emissions, although the global abatement potential across different land use types remains insufficiently researched. Based on a meta-analysis of 718 publications covering 74 species across 31 countries, this study quantified yield, GHG emissions, and mitigation potential under various land systems. Results reveal that land-crop configurations fundamentally determine GHG tradeoffs: croplands optimize synergies, (e.g., Miscanthus: 12.93 t ha⁻¹ yr⁻¹ yield, 4.14 t CO₂-eq ha⁻¹ yr⁻¹ emissions), forests increase emissions despite high productivity, and wetlands perform poorly. Random forest modeling identified key drivers (e.g., clay content for yield, rotation frequency for emissions). Long-term projections show Miscanthus maintains robust productivity and stable emissions until 2050, while uncertainty rises for other crops. Strategic prioritization recommends Miscanthus on croplands/grasslands and avoidance of high-emission systems. The results underscore that scalable bioenergy deployment aligned with Paris Agreement targets requires context-specific land-crop matching and strict avoidance of high-emission types.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108777"},"PeriodicalIF":10.9,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cellulose nanocrystals from forest residues: An integrated techno-economic analysis and life cycle assessment 从森林残留物中提取纤维素纳米晶体：综合技术经济分析和生命周期评估

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

Resources Conservation and Recycling

Pub Date : 2026-01-07 DOI: 10.1016/j.resconrec.2026.108778

Rahul Prasad Bangalore Ashok , Richard Bergman , Md Shahadat Hossain , Deepak Kumar , Prakash Nepal , Troy Runge

Cellulose nanocrystals (CNCs) are renewable, high-value nanomaterials with broad industrial applications. Based on laboratory-scale experimental data, this study demonstrates the feasibility of utilizing sugar maple forest residues for 10 metric tons per day (MTPD) production of CNC through an integrated techno-economic analysis (TEA) and life cycle assessment (LCA). The minimum selling price (MSP) of CNC was estimated at $16.03/kg, with a global warming (GW) impact of 28.60 kg CO₂ eq/kg CNC. Sensitivity analysis identified CNC yield and pretreatment solids loading as key drivers for the economic and environmental performance of the process. Monte Carlo simulations yielded 90% MSP confidence interval of $13.33–19.23/kg, while key impact categories including GW, marine eutrophication, smog formation, and ozone depletion showed low variability, indicating model robustness. The environmental risk assessment revealed that forest residues offer a sustainable valorization pathway with the process accompanied by risks tied to chemical usage and waste management.

纤维素纳米晶体是一种可再生的高价值纳米材料，具有广泛的工业应用前景。基于实验室规模的实验数据，本研究通过综合技术经济分析（TEA）和生命周期评估（LCA），论证了利用糖枫林残留物每天生产10公吨CNC （MTPD）的可行性。CNC的最低销售价格（MSP）估计为16.03美元/千克，全球变暖（GW）影响为28.60千克二氧化碳当量/千克CNC。敏感性分析确定CNC产量和预处理固体载荷是该工艺经济和环境性能的关键驱动因素。蒙特卡罗模拟得出90%的MSP置信区间为13.33-19.23美元/kg，而包括GW、海洋富营养化、烟雾形成和臭氧消耗在内的关键影响类别表现出低变异，表明模型的稳健性。环境风险评估表明，森林残留物提供了一个可持续的增值途径，这一过程伴随着与化学品使用和废物管理相关的风险。

{"title":"Cellulose nanocrystals from forest residues: An integrated techno-economic analysis and life cycle assessment","authors":"Rahul Prasad Bangalore Ashok , Richard Bergman , Md Shahadat Hossain , Deepak Kumar , Prakash Nepal , Troy Runge","doi":"10.1016/j.resconrec.2026.108778","DOIUrl":"10.1016/j.resconrec.2026.108778","url":null,"abstract":"<div><div>Cellulose nanocrystals (CNCs) are renewable, high-value nanomaterials with broad industrial applications. Based on laboratory-scale experimental data, this study demonstrates the feasibility of utilizing sugar maple forest residues for 10 metric tons per day (MTPD) production of CNC through an integrated techno-economic analysis (TEA) and life cycle assessment (LCA). The minimum selling price (MSP) of CNC was estimated at $16.03/kg, with a global warming (GW) impact of 28.60 kg CO₂ eq/kg CNC. Sensitivity analysis identified CNC yield and pretreatment solids loading as key drivers for the economic and environmental performance of the process. Monte Carlo simulations yielded 90% MSP confidence interval of $13.33–19.23/kg, while key impact categories including GW, marine eutrophication, smog formation, and ozone depletion showed low variability, indicating model robustness. The environmental risk assessment revealed that forest residues offer a sustainable valorization pathway with the process accompanied by risks tied to chemical usage and waste management.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108778"},"PeriodicalIF":10.9,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Generative inverse design of sustainable concrete via global waste glass recycling 基于全球废玻璃回收的可持续混凝土生成反设计

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

Resources Conservation and Recycling

Pub Date : 2026-01-07 DOI: 10.1016/j.resconrec.2025.108775

Jie Yu , Sizhe Xue , Junhong Ye , Fei Teng , Minxin Yang , Jiangtao Yu , Zhenjun Yang , Yiwei Weng , Jian-Guo Dai , Viktor Mechtcherine

The rising global demand for concrete poses a significant challenge to reducing carbon emissions. Recycling waste glass offers a sustainable alternative by reducing landfill burden and conserving resources. However, conventional mix design methods are inefficient when recycled materials are involved, and many existing machine learning approaches overlook the materials genome and lack experimental validation. This study introduces an inverse design methodology using a Conditional Invertible Neural Network to generate concrete mixtures containing waste glass that meet target compressive strengths. By integrating physical and chemical properties of raw materials into the generative model, the proposed approach enables efficient and accurate mixture design. Experimental validation shows 93.5% accuracy for a 55 MPa target strength within one minute. This method can reduce carbon emissions by up to 92.4% through the recycling of global waste glass. This scalable, cost-effective strategy supports the development of high-performance, low-carbon concrete aligned with broader circular economy goals.

全球对混凝土需求的不断增长对减少碳排放构成了重大挑战。回收废玻璃通过减少填埋负担和节约资源提供了一种可持续的选择。然而，当涉及回收材料时，传统的混合设计方法效率低下，并且许多现有的机器学习方法忽略了材料基因组并且缺乏实验验证。本研究引入了一种反设计方法，使用条件可逆神经网络生成含有废玻璃的混凝土混合物，以满足目标抗压强度。通过将原材料的物理和化学性质整合到生成模型中，该方法可以实现高效和准确的混合物设计。实验验证表明，对55 MPa目标强度在1分钟内的测量精度为93.5%。这种方法可以通过回收全球废旧玻璃，减少高达92.4%的碳排放。这种可扩展的、具有成本效益的战略支持高性能、低碳混凝土的发展，与更广泛的循环经济目标保持一致。

{"title":"Generative inverse design of sustainable concrete via global waste glass recycling","authors":"Jie Yu , Sizhe Xue , Junhong Ye , Fei Teng , Minxin Yang , Jiangtao Yu , Zhenjun Yang , Yiwei Weng , Jian-Guo Dai , Viktor Mechtcherine","doi":"10.1016/j.resconrec.2025.108775","DOIUrl":"10.1016/j.resconrec.2025.108775","url":null,"abstract":"<div><div>The rising global demand for concrete poses a significant challenge to reducing carbon emissions. Recycling waste glass offers a sustainable alternative by reducing landfill burden and conserving resources. However, conventional mix design methods are inefficient when recycled materials are involved, and many existing machine learning approaches overlook the materials genome and lack experimental validation. This study introduces an inverse design methodology using a Conditional Invertible Neural Network to generate concrete mixtures containing waste glass that meet target compressive strengths. By integrating physical and chemical properties of raw materials into the generative model, the proposed approach enables efficient and accurate mixture design. Experimental validation shows 93.5% accuracy for a 55 MPa target strength within one minute. This method can reduce carbon emissions by up to 92.4% through the recycling of global waste glass. This scalable, cost-effective strategy supports the development of high-performance, low-carbon concrete aligned with broader circular economy goals.</div></div>","PeriodicalId":21153,"journal":{"name":"Resources Conservation and Recycling","volume":"227 ","pages":"Article 108775"},"PeriodicalIF":10.9,"publicationDate":"2026-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0