Waste management最新文献_第3页

Overflow-aware recycling bin location with random utilities: A case study of the commune of Estación Central, Chile 溢出意识回收箱位置随机公用事业：以智利中部Estación公社为例

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-22 DOI: 10.1016/j.wasman.2026.115360

Gonzalo Méndez-Vogel , Sebastián Dávila-Gálvez , Pedro Jara-Moroni , Jorge Zamorano

{"title":"Overflow-aware recycling bin location with random utilities: A case study of the commune of Estación Central, Chile","authors":"Gonzalo Méndez-Vogel , Sebastián Dávila-Gálvez , Pedro Jara-Moroni , Jorge Zamorano","doi":"10.1016/j.wasman.2026.115360","DOIUrl":"10.1016/j.wasman.2026.115360","url":null,"abstract":"<div><div>This study tackles the challenge of locating recycling bins to improve municipal waste collection. We develop a lexicographic mixed-integer optimization model with two sequential objectives: maximizing the amount of recycled glass and then minimizing bin overflow. The model considers how people decide where to recycle, which is captured through a multinomial logit (random-utility) choice model with an outside option. Demand is estimated at the census-block level using household counts and average glass-generation rates, and user access is represented through distance-based disutilities. We assume that users may leave glass outside the bins when these are full, reflecting the formation of micro-landfills. The model is applied to a real case in Estación Central, Santiago, Chile. In the case study, we evaluate the current configuration in terms of expected glass capture and overflow, solve the model to optimally relocate the existing bins without adding infrastructure, and conduct a sensitivity analysis by varying the number of bins. Results show that relocating existing bins can raise weekly recycling by about five metric tonnes and completely eliminate overflow without new infrastructure. Configurations with fewer bins also achieve high recycling while keeping expected overflow below 60 kg. These insights can guide local governments in designing more efficient and user-friendly recycling systems.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115360"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039526","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

Critical analysis of literature on landfill gas collection efficiency and its application to emissions estimates 垃圾填埋气体收集效率及其在排放估算中的应用文献的批判性分析

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-29 DOI: 10.1016/j.wasman.2026.115353

Caroline J. Saul , Paul T. Imhoff , Yixuan Wang , Morton A. Barlaz

{"title":"Critical analysis of literature on landfill gas collection efficiency and its application to emissions estimates","authors":"Caroline J. Saul , Paul T. Imhoff , Yixuan Wang , Morton A. Barlaz","doi":"10.1016/j.wasman.2026.115353","DOIUrl":"10.1016/j.wasman.2026.115353","url":null,"abstract":"<div><div>Landfills are considered the third largest source of anthropogenic methane emissions in the U.S. and there is considerable interest in estimating emissions from individual landfills. Collection efficiency (CE) or methane collection index (MCI) is used in models to estimate emissions. The objective of this review is to critically analyze literature describing measured CEs and MCIs. Reported values ranged from 14 to 95% for intermediate covers and 53–100% for final covers. Many factors contribute to the ranges including: covers were classified as intermediate or final which is overly simplistic; variability in operational factors (e.g., well coverage, maintenance quality); waste characteristics such as age, composition, and mass in place which influence methane generation and likely collection; and uncertainty in emissions measurements and sometimes collected methane. A desired outcome of this review was to recommend values or ranges for intermediate and final covers that could be used in methane emissions models as applied to U.S. landfills. Such a recommendation is difficult considering the ranges reported in the literature and numerous site-specific factors that influence methane collection. Ultimately, each reported measurement is valid for a specific landfill at a specific time. Models that relate cover type and operational variables to MCI would best support estimation of a site-specific MCI, but such models are not available. Based on this review, the authors do not recommend a specific value for the MCI for an intermediate or final cover but rather expect the operator to select a value considering factors applicable to their landfill and the information presented here.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115353"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080096","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

Alkaline hydrothermal valorization of gold tailings into hydrophobic silica aerogels and FAU zeolite 金尾矿碱性水热活化制备疏水二氧化硅气凝胶和FAU沸石。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-02-02 DOI: 10.1016/j.wasman.2026.115394

Daokui Yang , Guangshuo Wei , Jiazheng Zhang , Ruiqiang Zhao , Yunfei Wang , Jingwei Li , Xujiang Wang , Wenlong Wang , Yanpeng Mao

{"title":"Alkaline hydrothermal valorization of gold tailings into hydrophobic silica aerogels and FAU zeolite","authors":"Daokui Yang , Guangshuo Wei , Jiazheng Zhang , Ruiqiang Zhao , Yunfei Wang , Jingwei Li , Xujiang Wang , Wenlong Wang , Yanpeng Mao","doi":"10.1016/j.wasman.2026.115394","DOIUrl":"10.1016/j.wasman.2026.115394","url":null,"abstract":"<div><div>The large-scale accumulation of gold tailings (GT) poses significant threats to ecological systems and human health, while existing resource recovery strategies remain limited by low value-added outputs. This study aims to valorize GT into high-value products via an alkaline hydrothermal process, achieving comprehensive utilization of all components. The liquid-phase product, GT-derived silica source, was employed to fabricate hydrophobic GT-based silica aerogels (GTSA). Systematic characterization was conducted to elucidate the chemical structure evolution, thermal stability, hydrophobicity, pore characteristics, and microscopic morphology of GTSA under varying hydrophobic modifiers dosages. The results revealed that surface modification led to partially replaced of Si–OH groups with Si–CH<sub>3</sub> groups in GT-based silica aerogels, facilitating the transition from hydrophilicity to hydrophobicity. During modification, the GT-based silica aerogels transformed from densely aggregated large particles into uniformly distributed nanoparticles, forming a well-dispersed porous network. The solid-phase hydrothermal product—GT-based FAU zeolite (GTFZ)—was applied for the adsorption of Cu<sup>2+</sup> and Zn<sup>2+</sup> from wastewater. GTFZ exhibited comparable adsorption behavior toward both metal ions, with adsorption mechanisms involving electrostatic attraction, ion exchange, and surface complexation. Overall, this work presents a sustainable and efficient strategy for the high-value and full-component utilization of GT, providing a feasible pathway for the green synthesis of porous materials from high-silica solid wastes.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115394"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146114379","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 simple method for preparing novel biochar with Fe–N bonds and porous structure: Towards phosphate adsorption 一种制备具有Fe-N键和多孔结构的新型生物炭的简单方法：面向磷酸盐吸附

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-22 DOI: 10.1016/j.wasman.2026.115361

Quanfeng Wang , Yang Xiao , Jiufang Qi , Haoxuan Wei , Guoming Zeng , Demin Yang , Xiaoling Lei , Yuanyuan Huang

{"title":"A simple method for preparing novel biochar with Fe–N bonds and porous structure: Towards phosphate adsorption","authors":"Quanfeng Wang , Yang Xiao , Jiufang Qi , Haoxuan Wei , Guoming Zeng , Demin Yang , Xiaoling Lei , Yuanyuan Huang","doi":"10.1016/j.wasman.2026.115361","DOIUrl":"10.1016/j.wasman.2026.115361","url":null,"abstract":"<div><div>In this study, a magnetic iron–nitrogen co-doped adsorbent (Fe/N-KBC) with a high specific surface area was successfully prepared through the simple co-pyrolysis of municipal sludge and modifiers (potassium ferrate, urea, and potassium chloride). The activation effect of K<sup>+</sup> ions effectively enhanced the pore structure, while co-doping with iron and nitrogen facilitated the formation of Fe–N bonds, thereby improving both the adsorption rate and selectivity for phosphate. It exhibited a magnetic saturation value of 16.37 emu/g, enabling convenient magnetic separation. Even in the presence of coexisting ions, the phosphate removal efficiency remained above 81.62 %. Moreover, the Fe–N bonds significantly suppressed iron leaching, with the maximum Fe ion concentration measured at only 0.019 mg/L, ensuring excellent adsorption stability. Compared to other adsorbents analyzed in this study, Fe/N-KBC demonstrated both the highest adsorption capacity and the fastest adsorption kinetics. The adsorbent maintained full regenerability and could be reused for at least four cycles with minimal performance loss. In a continuous flow column test, Fe/N-KBC effectively treated approximately 590 bed volumes (BV) of phosphate-containing wastewater. The main adsorption mechanism was attributed to Fe–N coordination bonding, accompanied by electrostatic attraction, π–π interactions, hydrogen bonding and pore filling. Hydroponic experiments using mung beans confirmed the low biotoxicity of adsorbents, and the saturated material could be directly repurposed as a phosphate fertilizer. Overall, this work proposes a promising strategy for the simultaneous regulation of adsorption rate and selectivity and offers a facile adsorbent material for efficient phosphorus recovery and resource reutilization.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115361"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039527","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

Valorization of hazelnut shell waste biomass into sustainable carbons for energy storage applications 榛子壳废弃生物质转化为可持续碳的储能应用

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-29 DOI: 10.1016/j.wasman.2026.115363

Stefania Volante , Rif Atussaufiyah , Federico Maria Vivaldi , Pietro Zaccagnini , Mara Serrapede , Andrea Lamberti , Anna Maria Raspolli Galletti , Federico Bella , Fabio Di Francesco , Domenico Licursi , Claudia Antonetti

{"title":"Valorization of hazelnut shell waste biomass into sustainable carbons for energy storage applications","authors":"Stefania Volante , Rif Atussaufiyah , Federico Maria Vivaldi , Pietro Zaccagnini , Mara Serrapede , Andrea Lamberti , Anna Maria Raspolli Galletti , Federico Bella , Fabio Di Francesco , Domenico Licursi , Claudia Antonetti","doi":"10.1016/j.wasman.2026.115363","DOIUrl":"10.1016/j.wasman.2026.115363","url":null,"abstract":"<div><div>In the last decades, the use of biochar has been receiving increasing attention for the development of electrochemical energy storage devices. In this work, the waste hazelnut shell biomass, a low cost and abundant agriculture residue within our territory, was valorized as feedstock for the synthesis of alkali-derived activated carbons, which were properly characterized and electrochemically tested, in the perspective of their use as new electrode material in energy storage applications. Two activated carbons have been identified as promising materials for this application and their electrochemical performances were further improved by including a doping step with copper (I) oxide, achieving the best specific capacitance of 123 F/g. Moreover, one of the two most promising activated carbons was tested in an EDLC symmetric device outperforming, at low power rates, reference materials in terms of specific energy density, reaching the value up to 40 Wh/kg, due to its remarkable specific capacitance of 55 F/g. In summary, this work proposes a sustainable and low energy demanding approach to transform waste biomasses into high value activated carbon materials for energy storage applications. The strategy not only promotes the reuse and valorization of hazelnut shell waste biomass, but it also supports a circular model with promising environmental and economic advantages.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115363"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080091","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

Municipal solid waste incineration state recognition system based on deep convolutional stochastic configuration machine 基于深度卷积随机配置机的城市生活垃圾焚烧状态识别系统

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-29 DOI: 10.1016/j.wasman.2026.115383

Jiankang Yang , Weitao Li , Jian Tang , Wei Sun , Qiyue Li

{"title":"Municipal solid waste incineration state recognition system based on deep convolutional stochastic configuration machine","authors":"Jiankang Yang , Weitao Li , Jian Tang , Wei Sun , Qiyue Li","doi":"10.1016/j.wasman.2026.115383","DOIUrl":"10.1016/j.wasman.2026.115383","url":null,"abstract":"<div><div>To address the fluctuating combustion caused by the complex and variable composition of municipal solid waste incineration (MSWI), this paper proposes a state recognition system for MSWI based on a deep convolutional stochastic configuration machine (DCSCM). The system consists of high-temperature cameras, a network switch, an industrial control computer, and a server, which employs DCSCM for intelligent assessment of combustion states. The DCSCM simulated expert prior knowledge via a linear predictive basis model, incrementally constructed convolutional structure, and incorporated an adaptive optimization mechanism based on error feedback. The mechanism dynamically evaluated the model convergence and enabled adaptive construction of model width and depth before convolutional kernels were populated. The results demonstrated that the trained DCSCM achieved a parameter size of 376 KB and a recognition accuracy of 97.32%, with its operational deployment and self-optimization in complex environments improving the average accuracy by 1.20%. The study provides support for precise combustion parameter control in MSWI, enabling automated monitoring of combustion states and reduced pollutant emissions.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115383"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080092","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

Landfill gas loading ramp-up strategies: Acclimatization optimization and long-term oxidation capacity of methane oxidation biosystems 垃圾填埋气体负荷提升策略：甲烷氧化生物系统的适应性优化和长期氧化能力

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-31 DOI: 10.1016/j.wasman.2026.115372

Jessica Leindorf de Almeida, Jacopo De Tommaso, Federico Galli, Alexandre Cabral

{"title":"Landfill gas loading ramp-up strategies: Acclimatization optimization and long-term oxidation capacity of methane oxidation biosystems","authors":"Jessica Leindorf de Almeida, Jacopo De Tommaso, Federico Galli, Alexandre Cabral","doi":"10.1016/j.wasman.2026.115372","DOIUrl":"10.1016/j.wasman.2026.115372","url":null,"abstract":"<div><div>Methane (CH<sub>4</sub>) emissions from landfills represent a challenge in global climate mitigation efforts. Methane oxidation biosystems (MOB) offer a low-cost solution for addressing residual and fugitive CH<sub>4</sub> emissions, yet the role of the acclimatization phase has not received enough attention in the technical literature. Here we optimize the acclimatization of compost-based MOBs through controlled landfill gas (LFG) ramp-up strategies. Four identical laboratory-scale columns were subjected to distinct flow increase patterns: exponential, linear, first-order-like, and constant inlet loading. The results showed that exponential and linear strategies accelerated the attainment of 100% CH<sub>4</sub> removal faster than the constant-flow system. Additionally, the axial gas concentration profile revealed that ramp-up strategies influenced the depth required for complete oxidation. Notably, exponential ramp-up led to full CH<sub>4</sub> removal within the first 50 mm of the methane oxidation layer (MOL) when actively aerated, suggesting the potential to significantly reduce its thickness in field systems. An additional 175-day column test, designed to estimate the maximum methane oxidation capacity under increasing loadings, confirmed the benefits of gradual acclimatization. By assuming that the oxidation rate follows the Michaelis–Menten model, the system achieved sustained removal efficiencies (>90%) and reached a maximum oxidation rate (<span><math><mrow><msub><mi>V</mi><mrow><mi>max</mi></mrow></msub></mrow></math></span>) of 3811 g<sub>CH4</sub>·m<sup>−3</sup>·d<sup>-1</sup> and a <span><math><mrow><msub><mi>K</mi><mi>m</mi></msub></mrow></math></span> of 12 g<sub>CH4</sub>·m<sup>−3</sup>. These findings highlight the importance of ramp-up strategies in designing efficient and more compact MOBs that can quickly attain design loadings.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115372"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080098","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

Extended exergy accounting applied to waste-to-energy facilities location-allocation problem 扩展火用会计在垃圾焚烧发电设施选址分配问题中的应用。

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-02-04 DOI: 10.1016/j.wasman.2026.115388

Yong Liu , Zi-hong Huang , Yuan-fang Zhang , Qiong-jie Zheng

{"title":"Extended exergy accounting applied to waste-to-energy facilities location-allocation problem","authors":"Yong Liu , Zi-hong Huang , Yuan-fang Zhang , Qiong-jie Zheng","doi":"10.1016/j.wasman.2026.115388","DOIUrl":"10.1016/j.wasman.2026.115388","url":null,"abstract":"<div><div>With the unexpected increase in municipal solid waste (MSW), the existing waste-to-energy (WTE) facilities have been overloaded, which has posed a severe threat to urban environmental safety. The location of WTE facilities directly determines the economic costs and is essential to sustainable urban development. However, most of the current WTE facility location models are constructed based on optimization frameworks. These frameworks mainly consider economic costs, transportation distances, emissions and capacity limitations, often ignoring the comprehensive integration of thermodynamic efficiency and social environmental factors. Herein, we propose a novel Mixed-Integer Linear Programming (MILP) model integrating Extended Exergy Accounting (EEA) to optimize WTE facility locations by evaluating thermodynamic, economic, social, and environmental impacts. The case study on the site allocation for solid waste incineration plants in Shenzhen City shows that, compared with the current situation and the site allocation plan proposed by the government, the model proposed in this paper generates less external environmental and social costs exergy when handling the same amount of household waste, and can recover more valuable products. It generates 31.06% and 24.12% more additional value products respectively. Our research results indicate that strategic facility layout can reduce transportation energy consumption and dependence on landfill, providing an expandable solution for sustainable municipal solid waste management.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115388"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146126714","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 comprehensive overview of the potential of recycled carbon fiber from composite waste: reclamation, remanufacturing, and performance 从复合材料废物中回收碳纤维的潜力的全面概述：回收，再制造和性能

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-29 DOI: 10.1016/j.wasman.2026.115352

Peter Sántha , Peter Tamás-Bényei

{"title":"A comprehensive overview of the potential of recycled carbon fiber from composite waste: reclamation, remanufacturing, and performance","authors":"Peter Sántha , Peter Tamás-Bényei","doi":"10.1016/j.wasman.2026.115352","DOIUrl":"10.1016/j.wasman.2026.115352","url":null,"abstract":"<div><div>The widespread adoption of carbon fiber–reinforced polymers (CFRPs) across high-performance sectors such as aerospace, automotive, wind energy, and construction has significantly increased the global demand for carbon fibers (CFs). However, the energy-intensive production process and growing volume of end-of-life (EoL) CFRP waste present significant environmental and economic challenges. This review offers a comprehensive analysis of the state of the art in carbon fiber recycling, focusing on the reclamation, remanufacturing, and reuse of recycled carbon fibers (rCFs) to support a sustainable circular economy. These waste streams are projected to grow substantially, driven by the decommissioning of wind turbines and aircraft. The valuable fibers are lost in traditional waste management practices, such as landfilling and incineration. Landfilling is also detrimental to the environment and unsustainable. Hence, recovering CFs through recycling is essential for minimizing environmental impacts and preserving material value.</div><div>This review presents a comprehensive assessment of recycling technologies, including mechanical, thermal, chemical, and emerging methods. Each technique is assessed based on quantified fiber retention, energy efficiency, scalability, and technological readiness. The study further explores remanufacturing technologies for rCFs, detailing their transformation into intermediate forms suitable for reuse. The alignment of discontinuous fibers is critical for maximizing mechanical performance. Analytical and numerical modeling tools applied to predict fiber orientation, alignment efficiency, and composite behavior are included. In addition to technical insights, the article integrates economic viability, quality assurance, and life cycle assessment (LCA) to evaluate environmental performance, supporting market acceptance and regulatory compliance by quantifying the sustainability advantages of rCFs.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115352"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080678","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

Numerical study of in‑situ aeration using landfillFoam: effects of landfill properties and aeration strategies 利用垃圾填埋泡沫进行原位曝气的数值研究：垃圾填埋场特性和曝气策略的影响

IF 7.1 2区环境科学与生态学

Waste management Pub Date : 2026-02-28 Epub Date: 2026-01-28 DOI: 10.1016/j.wasman.2025.115306

Junlong Huang , Yiping Wu , Fangming Xu , Hongtao Wang , Yanjun Liu

{"title":"Numerical study of in‑situ aeration using landfillFoam: effects of landfill properties and aeration strategies","authors":"Junlong Huang , Yiping Wu , Fangming Xu , Hongtao Wang , Yanjun Liu","doi":"10.1016/j.wasman.2025.115306","DOIUrl":"10.1016/j.wasman.2025.115306","url":null,"abstract":"<div><div>In-situ aeration, achieved by injecting air into municipal solid waste, accelerates landfill stabilization, yet current designs remain largely empirical. This study introduces <em>landfillFoam</em>, an open-source solver built on OpenFOAM and porousMultiphaseFoam, integrating unsaturated two-phase flow, the dusty gas model for multicomponent transport, Monod-type aerobic and anaerobic degradation, methane oxidation, and heat transfer. Validation against analytical solutions and field data confirmed its accuracy. A 1,200-day baseline simulation identified four aerobic stabilization stages, with aerobic processes contributing 36% of total organic degradation. Aeration shortened stabilization time by 10-15% relative to non-aerated conditions. Parametric analyses showed that higher permeability enhanced injection rates but increased overheating risk, while water saturation of 40-60% provided an optimal balance between degradation and oxygen transport. A hexagonal well layout improved energy efficiency by 40% compared with a square layout, and reducing spacing from 15 m to 12 m yielded marginal benefits. In contrast, alternating injection-extraction wells and intermittent injection hindered stabilization relative to continuous injection. Early aeration initiation markedly enhanced stabilization, with a critical delay threshold beyond which benefits diminished. These findings provide quantitative guidance for optimizing aeration strategies to reduce landfill aftercare requirements.</div></div>","PeriodicalId":23969,"journal":{"name":"Waste management","volume":"213 ","pages":"Article 115306"},"PeriodicalIF":7.1,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080679","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