Waste Management Bulletin最新文献

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Profiling PBDE emissions from coastal landfills: Impact of waste management practices

Waste Management Bulletin

Pub Date : 2025-02-24 DOI: 10.1016/j.wmb.2025.02.005

Priyam Saxena , Xing Song , Baiyu Zhang , Atanu Sarkar , Gopal Achari

This study investigates the influence of landfill management practices on the release of polybrominated diphenyl ethers (PBDEs) from coastal landfills in Newfoundland, Canada. By comparing PBDE congener profiles in leachate from a modern landfill with advanced treatment systems and a legacy landfill with limited infrastructure, we demonstrate the critical role of modern waste management practices in mitigating PBDE contamination. Both sites showed PBDE contamination, but the legacy landfill exhibited greater variability in congener types and concentrations. BDE-47 emerged as the predominant congener at both sites, with episodic spikes at the legacy landfill reaching 14.39 ng/L, alongside the presence of congeners like BDE-77, BDE-100, and BDE-183. GIS analysis revealed PBDE dispersion into nearby surface waters, posing risks to marine ecosystems. Landfill operator surveys provided insights into operational challenges, including limited e-waste diversion, fire risks from batteries, and inadequate leachate treatment at the legacy site, contributing to its vulnerability. This study underscores the need for proactive PBDE management in coastal landfills. The adoption of modern landfill technologies and enhanced e-waste diversion programs is vital for reducing contamination and protecting marine environments. These findings highlight the importance of sustainable waste management practices in safeguarding coastal ecosystems.

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引用次数: 0

Sustainable recovery of rare Earth elements from industrial waste: A path to circular economy and environmental health

Waste Management Bulletin

Pub Date : 2025-02-17 DOI: 10.1016/j.wmb.2025.02.004

Pranav Prashant Dagwar , Syed Suffia Iqbal , Deblina Dutta

Rare earth elements (REEs) play a vital role in digitalization and industrialization. Naturally occurring in bastnasite, monazite, and xenotime, REEs are primarily concentrated in China, Australia, and the USA, leading to dependence on secondary sources. Recycling REEs from industrial waste such as E-waste, wastewater, red mud, slag, and fly ash offers a sustainable, low-emission, and energy-efficient solution. Advanced methods, including bio-metallurgy, have optimized recovery, achieving 80–95% efficiency for elements like Yttrium, Cerium, Neodymium, and Thorium. However, improper handling of secondary REE resources poses environmental and health risks. This study comprehensively explores REEs’ role in sustainable industrial growth, evaluating traditional and advanced recycling technologies. It also assesses the ecotoxicological impacts of REEs and emphasizes safety measures. Additionally, the review highlights circular economy strategies for sustainable development, addressing environmental challenges while promoting efficient resource utilization.

引用次数: 0

Two inorganic materials were prepared by calcination-acid leaching combined treatment of coal gangue: Al&Fe enriched acid solution and Si enriched material

Waste Management Bulletin

Pub Date : 2025-02-13 DOI: 10.1016/j.wmb.2025.02.003

Junli Zhang, Haifang Wang

The classification and extraction of valuable components from coal gangue is a way to improve the comprehensive utilization of coal gangue. However, the stable structure of kaolinite in coal gangue makes silicon and aluminum closely combined in minerals, which is difficult to separate by simple physical or chemical methods, and hinders its hierarchical extraction. In this study, a method of calcination activation acid leaching combined with reduction treatment of coal gangue was developed, and an aluminum iron enriched acidic solution and a silicon enriched material were prepared. The activation effect and mechanism of calcined coal gangue and the conversion mechanism of acid leaching extraction of metal aluminum were systematically studied. The results showed that the optimal calcination activation acid leaching process parameters were as follows: calcination temperature: 600 ℃, calcination time: 4 h, acid leaching time: 2 h, solid–liquid ratio of activated coal gangue and hydrochloric acid solution (g:ml): 1:12. After calcination under the optimal conditions, the layered structure of Kaolinite was destroyed and some layered silicate minerals, Berlinite (AlPO₄), FeS, which were soluble in hydrochloric acid solution, were formed. These minerals are dissolved in hydrochloric acid solution and then separated by solid–liquid separation after reaction. An acidic solution rich in aluminum and iron and a material rich in silicon were prepared, which made the recovery of Al and Fe reach 90.84 % and 97.68 %, respectively. And the enrichment rate of Si (SiO₂) reached 83.90 %.This provides a new solution for the comprehensive utilization and sustainable utilization of coal gangue.

从煤矸石中分级提取有价值成分，是提高煤矸石综合利用水平的一条途径。然而，煤矸石中高岭石的稳定结构使得硅和铝在矿物中紧密结合，难以用简单的物理或化学方法分离，阻碍了其分级提取。本研究开发了煅烧活化酸浸结合还原处理煤矸石的方法，制备了富铝铁酸性溶液和富硅材料。系统研究了煅烧煤矸石的活化效果和机理以及酸浸提取金属铝的转化机理。结果表明，最佳煅烧活化酸浸工艺参数为：煅烧温度：600 ℃，煅烧时间：4 h，酸浸时间：2 h：4 h，酸浸时间：2 h，活性煤矸石与盐酸溶液的固液比（g:ml）：1:12：1:12.在最佳条件下煅烧后，高岭石的层状结构被破坏，形成了一些可溶于盐酸溶液的层状硅酸盐矿物、柏林石（AlPO4）、FeS。这些矿物溶解在盐酸溶液中，反应后通过固液分离进行分离。制备出富含铝和铁的酸性溶液以及富含硅的材料，使铝和铁的回收率分别达到 90.84 % 和 97.68 %。这为煤矸石的综合利用和可持续利用提供了一种新的解决方案。

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引用次数: 0

A novel Hausdorff fractional grey Bernoulli model and its Application in forecasting electronic waste

Waste Management Bulletin

Pub Date : 2025-02-08 DOI: 10.1016/j.wmb.2025.02.002

Gazi Murat Duman, Elif Kongar

This study presents the Hausdorff fractional NGBM (r,1), a novel prediction approach developed based on the original nonlinear grey Bernoulli model; NGBM(1,1). The approach integrates the Hausdorff fractional accumulation operator and provides greater degrees of freedom. The recurrence relation of the binomial in the discrete solution also provides simpler computation due to the elimination of the Gamma function calculation. The Jaya Algorithm is introduced to optimize the parameters of the new model to improve its adaptability. The proposed model and its findings are delineated with the help of two case studies utilizing e-waste data from United Kingdom and State of Connecticut. The proposed model is benchmarked with several existing forecasting models and the calculated Mean Absolute Percentage (MAPE) is compared. The findings demonstrate that the proposed model exhibits superior fitting and predictive accuracy in comparison to the existing models. It produced lower MAPE than its counterparts.

引用次数: 0

Eco-innovative approaches for recycling non-polyester/cotton blended textiles

Waste Management Bulletin

Pub Date : 2025-02-04 DOI: 10.1016/j.wmb.2025.02.001

Chandra Manivannan Arun , Logeshwaran Panneerselvan , Gunasekhar Nachimuthu , Meredith Conaty , Thava Palanisami

Blended textile waste constitutes a substantial portion of the global textile waste stream, making recycling essential for minimizing the industry’s environmental impact. Although polyester/cotton recycling is well developed, many other blended textiles are routinely landfilled owing to a lack of effective recycling technologies. This review critically assesses existing strategies for recycling non-polyester/cotton blends, highlighting the key challenges and opportunities for innovation. In the sorting stage, integrating artificial intelligence (AI) and machine learning (ML) enhances efficiency and accuracy. Advanced methods, such as green chemistry, mechanical recycling, and enzymatic treatments, have proven effective for most blended textiles; however, fibers, such as polypropylene, still lack defined closed-loop recycling routes. Life cycle assessment (LCA) indicates that recycling textile waste can reduce environmental impacts by 60%, but the absence of comprehensive LCA studies on diverse recycling approaches limits reliability. Furthermore, while textile recycling is sustainable, concerns regarding the emission of hazardous additives and organic pollutants pose ecological and health risks. Therefore, advanced recycling technologies for non-polyester/cotton blends are crucial for achieving sustainability. Future research should focus on developing efficient recycling methods for complex blends, addressing the environmental impact of hazardous substances, and standardizing LCA methodologies to ensure economic and environmental viability.

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引用次数: 0

Policy and regulatory perspectives of waste battery management and recycling: A review and future research agendas

Waste Management Bulletin

Pub Date : 2025-02-02 DOI: 10.1016/j.wmb.2025.01.011

Md Tasbirul Islam , Amjad Ali , Sikandar Abdul Qadir , Muhammad Shahid

Waste batteries represent a critical waste stream due to their valuable materials and potential environmental hazards. Existing studies predominantly focus on recycling methods, technologies, and material recovery, often relegating policy and regulatory considerations to secondary or partial analyses. Notably, no comprehensive review exclusively addressing the policy and regulatory dimensions of waste battery management has been conducted. To fill this gap, this study systematically reviewed 135 original research articles using a systematic literature review (SLR) and content analysis, examining ten key aspects: (1) scope and definition, (2) collection systems, (3) recycling and processing standards, (4) producer responsibility, (5) public awareness and education, (6) regulatory framework, (7) incentives for recycling, (8) research and development, (9) data collection and reporting, and (10) partnership and stakeholder engagement. The findings highlight core policy elements essential for effective waste battery management, including multi-stakeholder collaboration, data-driven decision-making models, eco-friendly technology R&D, government oversight of informal recycling, lifecycle thinking, consumer participation through education campaigns, adoption of global best practices, and Extended Producer Responsibility (EPR) implementation. Additionally, the study proposes actionable policy statements tailored for countries lacking established waste battery policies. This research provides a foundational framework for policymakers and valuable insights for researchers in waste management, environmental policy, and public administration.

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引用次数: 0

Synthesis and application of iron nanoparticles from scrap metal for triclosan degradation in water via Fenton and Sono-Fenton oxidation

Waste Management Bulletin

Pub Date : 2025-02-01 DOI: 10.1016/j.wmb.2025.01.012

S. Bhaskar , K.V. Apoorva , Shabina Ashraf , T. Athul Devan

Triclosan, a widely used antimicrobial agent in water known for its adverse effects was treated with Fenton and Sono Fenton oxidation. This study investigates the extraction of iron from scrap metal utilising acid digestion techniques and explores the production of iron nanoparticles for use as catalysts in Fenton and Sono-Fenton oxidation processes to degrade. Iron nanoparticles (FeSNPs) were synthesised using Mangifera indica plant extracts and characterized using scanning electron microscopy, X-ray diffraction, and electron diffusion spectroscopic spectrophotometry. Fenton and Sono-Fenton oxidation experiments were conducted with varying ratios of H₂O₂ to FeSNPs, and the maximum removal of triclosan was 59 % and 73 % for Fenton and Sono-Fenton oxidation, respectively, with rate constants of 0.0067 min⁻¹ and 0.0210 min⁻¹. The oxidation–reduction potential and pH played crucial roles in the efficiency of the oxidation processes. The total iron leached from the nanoparticles was 74.0 mg/L and 186.7 mg/L for Fenton and Sono-Fenton oxidation, respectively. At pH 3, the most effective ratio for triclosan removal by conventional Fenton oxidation was 1:4, whereas for Sono-Fenton oxidation it was 1:5. Sono-Fenton oxidation enhanced the production of hydroxyl radicals, resulting in a 14 % higher removal efficiency and a shorter treatment time compared to classical Fenton oxidation. Catalyst reusability studies demonstrated that Sono-Fenton oxidation maintained higher efficiency levels throughout multiple reuse cycles compared to Fenton oxidation. The results indicate the potential of utilizing iron nanoparticles derived from scrap metal as effective catalysts for the degradation of triclosan in water treatment applications. To recommend the most efficient Fenton oxidation method at an industrial scale, the study should be extended to evaluate the potential of these nanoparticles in both photo-Fenton and dark Fenton oxidation processes.

{"title":"Synthesis and application of iron nanoparticles from scrap metal for triclosan degradation in water via Fenton and Sono-Fenton oxidation","authors":"S. Bhaskar , K.V. Apoorva , Shabina Ashraf , T. Athul Devan","doi":"10.1016/j.wmb.2025.01.012","DOIUrl":"10.1016/j.wmb.2025.01.012","url":null,"abstract":"<div><div>Triclosan, a widely used antimicrobial agent in water known for its adverse effects was treated with Fenton and Sono Fenton oxidation. This study investigates the extraction of iron from scrap metal utilising acid digestion techniques and explores the production of iron nanoparticles for use as catalysts in Fenton and Sono-Fenton oxidation processes to degrade. Iron nanoparticles (FeSNPs) were synthesised using <em>Mangifera indica</em> plant extracts and characterized using scanning electron microscopy, X-ray diffraction, and electron diffusion spectroscopic spectrophotometry. Fenton and Sono-Fenton oxidation experiments were conducted with varying ratios of H<sub>2</sub>O<sub>2</sub> to FeSNPs, and the maximum removal of triclosan was 59 % and 73 % for Fenton and Sono-Fenton oxidation, respectively, with rate constants of 0.0067 min<sup>−1</sup> and 0.0210 min<sup>−1</sup>. The oxidation–reduction potential and pH played crucial roles in the efficiency of the oxidation processes. The total iron leached from the nanoparticles was 74.0 mg/L and 186.7 mg/L for Fenton and Sono-Fenton oxidation, respectively. At pH 3, the most effective ratio for triclosan removal by conventional Fenton oxidation was 1:4, whereas for Sono-Fenton oxidation it was 1:5. Sono-Fenton oxidation enhanced the production of hydroxyl radicals, resulting in a 14 % higher removal efficiency and a shorter treatment time compared to classical Fenton oxidation. Catalyst reusability studies demonstrated that Sono-Fenton oxidation maintained higher efficiency levels throughout multiple reuse cycles compared to Fenton oxidation. The results indicate the potential of utilizing iron nanoparticles derived from scrap metal as effective catalysts for the degradation of triclosan in water treatment applications. To recommend the most efficient Fenton oxidation method at an industrial scale, the study should be extended to evaluate the potential of these nanoparticles in both photo-Fenton and dark Fenton oxidation processes.</div></div>","PeriodicalId":101276,"journal":{"name":"Waste Management Bulletin","volume":"3 1","pages":"Pages 293-300"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143273105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards fiscal sustainable practices in Mexico: The quality of municipal tax regulation and tiered tariffs improve income from solid waste management services

Waste Management Bulletin

Pub Date : 2025-02-01 DOI: 10.1016/j.wmb.2025.01.009

Sergio López-Olvera , Juan Carlos Olivo-Escudero , Mauricio Hernández-Marroquín , Fausto Rafael López-Olvera , Yessica Lourdes Vallejo-Rivera , Marco Antonio Rodríguez-Gómez , Pedro Hipólito Rodríguez-Herrero

Solid waste management (SWM) is a fundamental responsibility of local governments, essential for public health and environmental sustainability. Globally, fiscal practices, such as tax regulation and tariff structures, are critical for ensuring effective SWM services and achieving sustainable development goals. In Mexico, municipalities face financial constraints and heavily depend on subsidies rather than robust fiscal frameworks to fund SWM operations. This study analyzed the impact of municipal tax regulation and sustainable taxation practices—specifically differentiated and progressive tariffs—on the income generation capacity of 240 Mexican municipalities. Data from municipal financial reports was extracted from official government websites and analyzed using statistical methods in R, including variance analysis and t-tests. The results demonstrate that municipalities with higher levels of tax regulation achieve significantly greater per capita income from SWM services compared to those with minimal or no regulation. Differentiated tariffs based on socioeconomic status were found to be particularly effective, generating income levels 3.29 times higher than uniform tariffs. In contrast, progressive tariffs based on waste quantity did not significantly enhance revenue generation. These findings challenge assumptions about the universal applicability of progressive tariffs and underscore the importance of tailoring fiscal strategies to local economic and social contexts. This study highlights the need for robust tax regulation and strategic fiscal policies to strengthen municipal revenue streams and improve SWM service delivery. It provides valuable information about the impact of tax regulation quality and sustainable fiscal practices on municipal income generation, offering insights for policymakers aiming to achieve fiscal sustainability and equitable access to SWM services.

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引用次数: 0

Landfill site selection in hilly terrains: An integrated RS-GIS approach with AHP and VIKOR

Waste Management Bulletin

Pub Date : 2025-01-31 DOI: 10.1016/j.wmb.2025.01.010

Shobhit Chaturvedi , Naimish Bhatt , Vatsal Shah , Keval H. Jodhani , Dhruvesh Patel , Sudhir Kumar Singh

This paper presents a novel integrated Geographic Information System-Multi-Criteria Decision Making (GIS-MCDM) framework for evaluating landfill site suitability in Shimla, India, a rapidly urbanizing hill station. Combining Remote Sensing-Geographic Information Systems (RS-GIS) with the Analytical Hierarchy Process (AHP) and VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) methods, the framework developed a Landfill Suitability Zoning map and ranked potential sites. The Land Suitability Index (LSI), derived using AHP, categorized the 124 sq. km study area into five suitability classes, with key factors influencing rankings: Landslide Proximity (weight: 0.162), Ground Slope (0.138), Land Use and Cover (0.122), Ground Elevation (0.114), and Road Proximity (0.095). From the Very High suitability zones, eight candidate sites were identified and ranked using VIKOR, with Kiargiri (score: 0.083) identified as the most suitable, followed by Baboloo (0.530), Karog (0.535), and Phayal Road (0.663). Sensitivity Analysis (SA) was conducted across five scenarios to account for possible variations in expert judgment, with the first three increasing beneficial weights (10 %, 15 %, and 20 %) and the last two decreasing beneficial weights (15 % and 20 %), proportionally adjusting non-beneficial weights. The SA confirmed the consistency and robustness of the rankings, with Kiargiri (0.083), Baboloo (0.530), Karog (0.535), and Phayal Road (0.663) maintaining top positions despite varying weight configurations. This approach offers a reliable, adaptable framework for landfill site selection in hilly urban areas, supporting waste management, sustainable development and environmental conservation.

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引用次数: 0

A review on the operational parameters and degradation kinetics used in anaerobic co-digestion of tannery residues

Waste Management Bulletin

Pub Date : 2025-01-27 DOI: 10.1016/j.wmb.2025.01.006

Shilpy Rani Basak, Samin Azhan Chowdhury, Rafiuzzaman Khan, Ahmad Hasan Nury, Md. Jahir Bin Alam, Md. Imran Kabir

Tannery residues possess the potential to produce biogas through anaerobic co-digestion processes. Research related to anaerobic co-digestion of food wastes and easily biodegradable wastes is ongoing and a vast advancement has been observed already to reclaim biogas as recycled energy. However, a review on the co-digestion of tannery residues and their potentiality to produce recycled energy has been initiated very limitedly. As these residues are more persistent compared to the biodegradable ones, their conversion to a simpler and safer form is highly required. To fill in this gap, an approach to review the co-digestion of tannery residues and its potential degradation kinetics has been initiated here so that the prime co-digestion- and kinetic- parameters are evaluated. Moreover, four generic equations with 45 parameters (variable and constant) have been developed based on the existing literature to explain the bacterial growth with substrate- and product- inhibition as well as substrate degradation. This review outcome will lead to the biochemical modelling of the degradation of tannery residues for various co-digestion elements. It will lead the modelers to find not only the potential parameters to be considered during co-digestion but also the effective initiations of related experiments.

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引用次数: 0

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