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Green coconut husk biochar- a sustainable reductant in ironmaking processes 绿色椰子壳生物炭-炼铁过程中的可持续还原剂。
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-15 DOI: 10.1016/j.wasman.2025.115130
Biswajit Mishra, Rehan Sachan, Lakkoju Sankara Rao, Girija Shankar Mahobia
{"title":"Green coconut husk biochar- a sustainable reductant in ironmaking processes","authors":"Biswajit Mishra,&nbsp;Rehan Sachan,&nbsp;Lakkoju Sankara Rao,&nbsp;Girija Shankar Mahobia","doi":"10.1016/j.wasman.2025.115130","DOIUrl":"10.1016/j.wasman.2025.115130","url":null,"abstract":"<div><div>This study explores the potential of green coconut husk biochar (GCB) as an alternative reductant in ironmaking by evaluating its composition, calorific value, and reduction efficiency in comparison to non-coking coal and coke. Pyrolysis of coconut husk at 500 °C for 45 min produced biochar with 65 % fixed carbon, 28 % volatile matter, and low ash content (5.5 %). The gross calorific value (GCV) peaked at 27.4 MJ/kg. Reduction experiments revealed that GCB exhibited faster initial reduction rates at all tested temperatures than both coke and non-coking coal, attributed to its higher volatile and hydrogen content, which promote reducing gas generation. FTIR analysis confirmed the presence of aliphatic C–H bonds and partially aromatic structures, indicating a balance between reactivity and thermal stability. Given its enhanced reduction performance, GCB shows promise not only as a standalone reductant but also as a blending component with conventional coal to improve early-stage reduction kinetics. These findings support the viability of biowaste-derived GCB in promoting more sustainable and efficient ironmaking processes.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115130"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Machine learning for efficient prediction and optimization of platinum group metal recovery from spent automotive catalysts 从废汽车催化剂中回收铂族金属的有效预测和优化的机器学习
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-15 DOI: 10.1016/j.wasman.2025.115132
Shanshan E , Haoxuan Yin , Yilin Yuan , Ruitong Gao , Bing Han , Bo Niu
{"title":"Machine learning for efficient prediction and optimization of platinum group metal recovery from spent automotive catalysts","authors":"Shanshan E ,&nbsp;Haoxuan Yin ,&nbsp;Yilin Yuan ,&nbsp;Ruitong Gao ,&nbsp;Bing Han ,&nbsp;Bo Niu","doi":"10.1016/j.wasman.2025.115132","DOIUrl":"10.1016/j.wasman.2025.115132","url":null,"abstract":"<div><div>Spent automotive catalysts (SACs) represent a valuable resource for recycling platinum group metals (PGMs). Roasting pretreatment followed by acid leaching is a widely used process for this purpose. However, traditional optimizing methods are often challenged by the variable composition of waste feed and numerous process parameters. This necessitates extensive experiments, leading to increased costs and environmental risks. To overcome these issues, this study employed machine learning (ML) to enhance the recovery of PGMs from SACs. Based on a dataset of 18,877 collected data points, the model included 34 input features covering the waste properties and technological parameters. By comparing four ML algorithms, the extreme gradient boosting demonstrated superior predictive performance for PGMs leaching efficiency across training, testing, and 5-fold cross-validation. Feature importance analysis revealed the influence of the multiple parameters on PGMs leaching behaviors. Additionally, a user-friendly graphical user interface (GUI) was developed to enable the rapid prediction of PGMs leaching results solely by experimentally measuring the particle size and composition of the waste, thereby minimizing the need for repeated experimental optimization. Finally, the practicality and effectiveness of the GUI were confirmed through experimental validation. This study provides an intelligent and efficient strategy for PGMs recovery from SACs, which can enhance both economic efficiency and environmental sustainability.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115132"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Corrigendum to “Effect of alkali additives on desulfurization of syngas during supercritical water gasification of sewage sludge” [Waste Manag. 131 (2021) 394–402] “碱添加剂对污水污泥超临界水气化合成气脱硫的影响”[废物管理,131(2021)394-402]。
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-15 DOI: 10.1016/j.wasman.2025.115115
Hongyu Feng , Zhihao Zhou , Dwi Hantoko , Li Zhong , Dicka Ar Rahim , Wei Fang , Mi Yan
{"title":"Corrigendum to “Effect of alkali additives on desulfurization of syngas during supercritical water gasification of sewage sludge” [Waste Manag. 131 (2021) 394–402]","authors":"Hongyu Feng ,&nbsp;Zhihao Zhou ,&nbsp;Dwi Hantoko ,&nbsp;Li Zhong ,&nbsp;Dicka Ar Rahim ,&nbsp;Wei Fang ,&nbsp;Mi Yan","doi":"10.1016/j.wasman.2025.115115","DOIUrl":"10.1016/j.wasman.2025.115115","url":null,"abstract":"","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115115"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Optimized co-combustion of paper-making solid wastes via, genetic algorithm: synergistic enhancement and coal-substitution potential 基于遗传算法的造纸固体废弃物共烧优化:协同增强和煤炭替代潜力
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-15 DOI: 10.1016/j.wasman.2025.115114
Ting Chen , Yuanfang Zhao , Jinhan Chen , Guohua Zhu , Jun Yin , Zhongcai Jin , Yiying Jin , Zhixin Yu , Zhigang Zhu , Xiujuan Tang
{"title":"Optimized co-combustion of paper-making solid wastes via, genetic algorithm: synergistic enhancement and coal-substitution potential","authors":"Ting Chen ,&nbsp;Yuanfang Zhao ,&nbsp;Jinhan Chen ,&nbsp;Guohua Zhu ,&nbsp;Jun Yin ,&nbsp;Zhongcai Jin ,&nbsp;Yiying Jin ,&nbsp;Zhixin Yu ,&nbsp;Zhigang Zhu ,&nbsp;Xiujuan Tang","doi":"10.1016/j.wasman.2025.115114","DOIUrl":"10.1016/j.wasman.2025.115114","url":null,"abstract":"<div><div>Amidst urgent needs for low-carbon fuels addressing energy and environmental challenges, this study investigates the untapped potential of paper-making solid waste as coal substitutes. By establishing a genetic algorithm-driven compatibility model to optimize blending ratios, we systematically evaluate coal replacement feasibility through multi-criteria assessment of combustion performance, gas emissions, and slagging tendencies. Results demonstrate distinct paper-making solid waste component behaviors, paper-making sludge exhibits superior combustion reactivity while paper-making waste residue achieve optimal comprehensive performance. The optimized blend delivers 44.98% faster ignition and 120 % higher combustion index versus coal, enabled by synergistic volatile interactions reducing activation energy. Environmentally significant CO<sub>2</sub> reductions (43.21 %) are offset by substantial organic volatile gases (93.02 %) and NO (337 %) emission increases. Elevated slagging risks emerge from alkaline oxides (CaO/Fe<sub>2</sub>O<sub>3</sub>) in residues. These findings confirm paper-making solid waste’s PSW technical viability for coal substitution, though industrial implementation remains contingent on advanced flue gas treatment and slag management strategies to enable sustainable waste-to-energy conversion within circular economy frameworks.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115114"},"PeriodicalIF":7.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
A techno-economic evaluation of the hydrometallurgical recycling of mixed CAM black mass from spent LIB cells 废锂电池混渣湿法冶金回收的技术经济评价
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-12 DOI: 10.1016/j.wasman.2025.115109
Moritz Petzold , Dominik Büscher , Dzeneta Vrucak , Richard Woeste , Peter Hense , Sabine Flamme , Bernd Friedrich , Peter Letmathe
{"title":"A techno-economic evaluation of the hydrometallurgical recycling of mixed CAM black mass from spent LIB cells","authors":"Moritz Petzold ,&nbsp;Dominik Büscher ,&nbsp;Dzeneta Vrucak ,&nbsp;Richard Woeste ,&nbsp;Peter Hense ,&nbsp;Sabine Flamme ,&nbsp;Bernd Friedrich ,&nbsp;Peter Letmathe","doi":"10.1016/j.wasman.2025.115109","DOIUrl":"10.1016/j.wasman.2025.115109","url":null,"abstract":"<div><div>The increasing diversity of lithium-ion batteries (LIBs) has introduced a range of cathode active materials (CAMs), with at least five major types currently in use. Regarding current recycling practices, end-of-life LIB cells are typically processed without any presorting, which results in a mixed CAM black mass input for hydrometallurgical treatment. This study evaluates the performance of a standard hydrometallurgical process under mixed CAM conditions and compares it with two hypothetical presorting scenarios by using a total cost of ownership (TCO) approach. Technically, the presence of lithium iron phosphate (LFP) black mass causes impurities that negatively affect process efficiency. Economically, the usage of partial presorting alone to recover cobalt-rich fractions results in a lower overall value compared to the mixed CAM baseline, due to the reduced marketability of the remaining material. However, further removal of LFP and lithium manganese oxide (LMO) improves both process quality and economic profitability, as most of the black mass can then be treated without major contaminants. The results also indicate that the hydrometallurgical process evaluated is not suitable for LFP recycling, thus highlighting the need for specific treatment strategies for phosphate-based chemistries.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115109"},"PeriodicalIF":7.1,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
An integrated detection-semantic fusion and near-infrared system for food-delivery packaging waste 食品配送包装废弃物的综合检测-语义融合和近红外系统
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-11 DOI: 10.1016/j.wasman.2025.115125
Wanqi Ma, Hong Chen, Ruyin Long
{"title":"An integrated detection-semantic fusion and near-infrared system for food-delivery packaging waste","authors":"Wanqi Ma,&nbsp;Hong Chen,&nbsp;Ruyin Long","doi":"10.1016/j.wasman.2025.115125","DOIUrl":"10.1016/j.wasman.2025.115125","url":null,"abstract":"<div><div>The rapid increase in food-delivery packaging waste poses major problems to sustainable waste management. Current recycling techniques are limited by the intricate spectral properties of multi-material packaging and challenges in detection in unstructured settings. Traditional vision-based methodologies are impeded by restricted cross-modal integration and insufficient multi-scale analysis, obstructing the advancement of a closed-loop circular economy. To address these limitations, this study introduces FDPWaste, the first dataset that combines annotated images with near-infrared spectra of five plastics, capturing the complexity of real recycling contexts. A new detection model, CFD-YOLO, is further developed with enhanced feature attention, achieving 93.3 % <span><math><msub><mrow><mi>mAP</mi></mrow><mn>50</mn></msub></math></span>. Furthermore, the edge-aware segmentation network, ECA-UNet, generates enhanced color features that are utilized by a PSO-SVM material classifier, achieving an accuracy of 97.1 %. These components are integrated into an automated sorting system with robotic control and real-time decision-making. Overall, the framework provides practical tools for advancing circular recycling of food-delivery packaging.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115125"},"PeriodicalIF":7.1,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Speciation of Zn in WtE fly ash residues after wet treatment 湿法处理后WtE飞灰渣中Zn的形态
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-11 DOI: 10.1016/j.wasman.2025.115112
Karin Karlfeldt Fedje , Ivana Staničić , Charlotte Nilsson , Fanny Bergman , Haakon M. Rui , Inge Johansson , Simone Sala , Jenny Rissler
{"title":"Speciation of Zn in WtE fly ash residues after wet treatment","authors":"Karin Karlfeldt Fedje ,&nbsp;Ivana Staničić ,&nbsp;Charlotte Nilsson ,&nbsp;Fanny Bergman ,&nbsp;Haakon M. Rui ,&nbsp;Inge Johansson ,&nbsp;Simone Sala ,&nbsp;Jenny Rissler","doi":"10.1016/j.wasman.2025.115112","DOIUrl":"10.1016/j.wasman.2025.115112","url":null,"abstract":"","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115112"},"PeriodicalIF":7.1,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Analyzing the origins of allochthonous marine debris in protected area: The Fishermen’s village as a case study 保护区外来海洋垃圾来源分析:以渔村为例
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-11 DOI: 10.1016/j.wasman.2025.115106
Luciane Ferreira da Silva Assis , Luci Cajueiro Carneiro Pereira , Brenda Ribeiro Padilha da Silva , Ingrid Niemes de Souza , Gina Peña Villacreses , Jenny Márcia Pereira Luz , Remo Marinho da Costa Pereira , Rauquírio Marinho da Costa
{"title":"Analyzing the origins of allochthonous marine debris in protected area: The Fishermen’s village as a case study","authors":"Luciane Ferreira da Silva Assis ,&nbsp;Luci Cajueiro Carneiro Pereira ,&nbsp;Brenda Ribeiro Padilha da Silva ,&nbsp;Ingrid Niemes de Souza ,&nbsp;Gina Peña Villacreses ,&nbsp;Jenny Márcia Pereira Luz ,&nbsp;Remo Marinho da Costa Pereira ,&nbsp;Rauquírio Marinho da Costa","doi":"10.1016/j.wasman.2025.115106","DOIUrl":"10.1016/j.wasman.2025.115106","url":null,"abstract":"<div><div>The study area is one of the world’s largest contiguous mangrove system and is located within a Protected Area that includes key ecosystems such as dunes, mangroves, <em>restinga</em>, and estuaries. This study hypothesizes that allochthonous marine litter found in the region are primarily the result of illegal dumping from ships, and that the presence of older bottles is influenced by coastal dynamics. To test this hypothesis, ten campaigns were made between April 2023 and January 2024, during spring tides over an area of 75,000 m<sup>2</sup>. A total of 712 items were collected, 98 % of which were plastic bottles. Of these, 664 had identifiable brands from 41 countries across Africa, the Americas, Asia, and Europe. The presence of allochthonous waste is largely linked to illegal ship discharges, as indicated by the age and state of the bottles. Over 63 % of the collected bottles were new (&gt; 2022), with the primary sources being China and Mauritania. Additionally, the absence of animal bite marks and the low occurrence of epibiontic organisms (only 8 %) further support this conclusion. Monthly analyses showed that during strong winds and low rainfall, debris could become buried in sediment in dune and restinga areas. Conversely, during periods of heavy rainfall or high hydrodynamic energy, erosion exposes older debris, explaining the presence of older bottles, though in smaller quantities. The lack of waste management services on Amazonian beaches within protected areas exacerbates debris accumulation, posing significant environmental challenges and negatively impacting the quality of life of traditional communities.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115106"},"PeriodicalIF":7.1,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Greenhouse gas emissions from anaerobic and aerobic treatment of biowaste and green waste 生物废物和绿色废物厌氧和好氧处理产生的温室气体排放
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-10 DOI: 10.1016/j.wasman.2025.115097
Julian Matlach , Lukas Knoll , Torsten Reinelt , Carsten Cuhls , Walter Stinner , Jaqueline Daniel-Gromke
{"title":"Greenhouse gas emissions from anaerobic and aerobic treatment of biowaste and green waste","authors":"Julian Matlach ,&nbsp;Lukas Knoll ,&nbsp;Torsten Reinelt ,&nbsp;Carsten Cuhls ,&nbsp;Walter Stinner ,&nbsp;Jaqueline Daniel-Gromke","doi":"10.1016/j.wasman.2025.115097","DOIUrl":"10.1016/j.wasman.2025.115097","url":null,"abstract":"<div><div>This study examines biowaste and green waste treatment in Germany, focusing on climate-relevant emissions from composting and anaerobic dry digestion (AD). Emissions from various sources (Combined heat and power (CHP) unit, leaks, exhaust air treatment, and non-gas-tight digestate storage) were analyzed on-site, paying particular attention to different phases of the composting process. Quantification of the rotting emissions was performed using an Open Dynamic Tunnel measurement system.</div><div>Inadequate conditions during composting and post-rotting of digestates can lead to significant greenhouse gas (GHG) emissions, including methane (CH<sub>4</sub>), nitrous oxide (N<sub>2</sub>O), and ammonia (NH<sub>3</sub>). Emissions were assessed at five open and two enclosed composting facilities, as well as two batch-operated and three continuously operated AD plants. Total plant-related emissions varied widely, with emission factors (EF) ranging from 22.9 to 574.0 kg CO<sub>2</sub>–equivalent (eq) Mg<sup>−1</sup> wet waste (ww), while rotting process emissions ranged from 16.6 to 318.6 kg CO<sub>2</sub>–eq Mg<sup>−1</sup> ww across four measurement campaigns. Rotting processes account for the majority of total emissions, with the average emission distribution indicating that CH<sub>4</sub> represents the largest share at 66.4 % (71.2 ± 14.5 kg CO<sub>2</sub>–eq Mg<sup>−1</sup> ww), followed by N<sub>2</sub>O at 31.6 % (34.5 ± 14.5 kg CO<sub>2</sub>–eq Mg<sup>−1</sup> ww), while NH<sub>3</sub> constitutes the smallest fraction at 2.0 % (1.2 ± 0.3 kg CO<sub>2</sub>–eq Mg<sup>−1</sup> ww). GHG emissions during composting were only significantly influenced by feedstock materials, with digestate showing higher emissions than biowaste (p &lt; 0.05). Other parameters such as windrow height, structural material mixing ratios, and turning intervals had no significant impact (p &gt; 0.05).</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115097"},"PeriodicalIF":7.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
The recycling use of MSWI bottom ash as road construction material for carbon emissions reduction based on life cycle Assessment—A case study in China 基于生命周期评价的城市生活垃圾底灰筑路材料碳减排回收利用——以中国为例
IF 7.1 2区 环境科学与生态学
Waste management Pub Date : 2025-09-10 DOI: 10.1016/j.wasman.2025.115122
Xinhao Shen , Chenyi Liu , Yao Zhao , Qiang Li , Jiaqing Wang
{"title":"The recycling use of MSWI bottom ash as road construction material for carbon emissions reduction based on life cycle Assessment—A case study in China","authors":"Xinhao Shen ,&nbsp;Chenyi Liu ,&nbsp;Yao Zhao ,&nbsp;Qiang Li ,&nbsp;Jiaqing Wang","doi":"10.1016/j.wasman.2025.115122","DOIUrl":"10.1016/j.wasman.2025.115122","url":null,"abstract":"<div><div>This study evaluates the potential of municipal solid waste incineration-bottom ash (MSWI-BA) as a partial substitute for natural aggregates (NAs) in asphalt pavement, focusing on carbon emissions reduction. A comparative life cycle assessment (LCA) was conducted for a 5.142-km municipal road (Guangying Avenue, Sichuan, China) under two scenarios: a conventional pavement with NAs and a pavement incorporating MSWI-BA aggregates (MAs) at optimised (Alternative <em>A</em>) and maximised (Alternative <em>B</em>) substitution rates. The LCA covered raw-material production, transportation, and construction phases, using carbon emission factors (CEFs) and a Data Quality Indicator-Monte Carlo uncertainty analysis for robust quantification. Results indicate that high substitution of Mas yields significant carbon savings. Under Alternative <em>B</em> (70 % MA in the base layer and 100 % in the subbase/capping layers), the pavement saved approximately 2.78 × 10<sup>4</sup> tonnes of NAs and reduced life-cycle emissions by about 31 %. The greatest reductions occurred in lower layers, with base, subbase, and capping courses achieving 51 %-78 % CE reductions, compared to only 5 % in the surface layer. Transportation emissions partially offset benefits, as MAs were transported 156 km compared to 8 km for NAs. Local processing (Alternative <em>B</em> within 50 km) is recommended to maximise net gains. Despite a modest 7 % increase in construction-phase energy use for MA paving, the overall carbon benefit remains clear. These findings highlight the scalability of MSWI-BA for low-carbon road construction and provide practical insights for engineers and policymakers pursuing sustainable infrastructure solutions.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"207 ","pages":"Article 115122"},"PeriodicalIF":7.1,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
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